PW0-105 CWNA Certified Wireless Network Administrator (CWNA)

PW0-105 CWNA Certified Wireless Network Administrator (CWNA)
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PW0-105
CWNA
Certified Wireless Network Administrator (CWNA)
http://www.twpass.com/twpass.com/exam.aspx?eCode= PW0-105
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PW0-105
QUESTION: 1
Given: Your consulting firm has recently been hired to complete a site survey for ABC
Company. Your engineers use predictive modeling software for surveying, but ABC Company
insists on a pre-deployment site visit. What tasks should be performed as part of the predeployment visit to prepare for a predictive survey? (Choose two)
A. With a spectrum analyzer, identify the type, amplitude, and location of RF
interference sources, if any are present.
B. Evaluate the building materials at ABC s facility and confirm that the floor plan
documents are consistent with the actual building.
C. Validate that the AP transmit power and antenna type is identical for each AP in
ABC s existing deployment.
D. Collect information about ABC Company s security requirements and the current
configuration of their RADIUS and user database servers.
E. Simultaneously capture and analyze data on each 802.11 channel to establish a
baseline for potential network capacity and throughput.
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=1
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QUESTION: 2
What 802.11n technologies require MIMO support on both the transmitter and receiver?
(Choose 2)
A. Spatial multiplexing
B. Transmit beamforming
C. Maximal ratio combining
D. Space-time block coding
E. Cyclic shift diversity
F. Short guard intervals
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=2
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QUESTION: 3
What statement describes the authorization component of a AAA implementation?
A. Verifying that a user is who he says he is
B. Validating client device credentials against a database
C. Logging the details of user network behavior in order to review it at a later time
D. Granting access to specific network services according to a user profile
E. Implementing a WIPS as a full-time monitoring solution to enforce policies
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=3
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QUESTION: 4
What facts are true regarding controllers and APs in a Split MAC architecture? (Choose 2)
A. An IP tunnel is established between the AP and controller for AP management and
control functions.
B. Using centralized data forwarding, APs never tag Ethernet frames with VLAN
identifiers or 802.1p CoS.
C. With 802.1X/EAP security, the AP acts as the supplicant and the controller acts as
the authenticator.
D. Management and data frame types must be processed locally by the AP, while
control frame types must be sent to the controller.
E. In a distributed (local bridging) data forwarding model, the AP handles frame
encryption and decryption.
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=4
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QUESTION: 5
What feature(s) are most likely to be supported by 802.11 enterprise-class WLAN controllers?
(Choose 4)
A. Link aggregation / port trunking
B. 802.1p and DSCP QoS
C. BGP and Frame Relay
D. Captive web portals
E. IGMP snooping
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=5
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QUESTION: 6
Given: You are the network administrator for ABC Company. Your manager has recently
attended a wireless security seminar. The seminar speaker taught that a wireless network could
be hidden from potential intruders if you disabled the broadcasting of the SSID in Beacons and
configured the access points not to respond to Probe Request frames that have a null SSID
field. Your manager suggests implementing these security practices. What response should
you give to this suggestion? (Choose two)
A. Any 802.11 protocol analyzer can see the SSID in clear text in frames other than
Beacons and Probe Response frames. This negates any security benefit of trying to hide
the SSID in Beacons and Probe Response frames.
B. This security practice prevents manufacturers client utilities from detecting the SSI
D. As a result, the SSID cannot be obtained by attackers, except through social
engineering, guessing, or use of a WIPS.
C. Although it does not benefit the security posture, hiding the SSID in Beacons and
Probe Response frames can be helpful for preventing some users (such as guests) from
attempting to connect to the corporate network.
D. Any tenants in the same building using advanced penetration testing tools will be
able to obtain the SSID by exploiting WPA EAPOL-Key exchanges. This poses an
additional risk of exposing the WPA key.
E. To improve security by hiding the SSID, the AP and client stations must both be
configured to remove the SSID from association request and response frames. Most
WLAN products support this.
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=6
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QUESTION: 7
What component of the 802.11 standard allows stations to reserve access to the RF medium for
a specified period of time?
A. Long slot times
B. DTIM Interval
C. Listen Interval
D. Probe Request frames
E. RTS or CTS frames
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=7
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QUESTION: 8
Given: Network users and IT personnel at a large machinery manufacturer have been
discussing the potential uses and benefits of implementing an indoor WLAN. The network
administrator and network manager have requested a meeting of senior management personnel
to discuss a WLAN implementation before taking any site survey or implementation steps.
The first order of discussion in the meeting is corporate policy concerning implementation and
use of WLAN technology. What specific topics are appropriate in this policy meeting?
(Choose two)
A. Vendor hardware recommendations
B. Business justification
C. User productivity impact
D. Antenna types
E. Obtaining permits and zoning requirements
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=8
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QUESTION: 9
In a long-distance RF link, what statement about Fade Margin is true?
A. Fade Margin is an additional pad of signal strength designed into the RF system to
compensate for unpredictable signal fading.
B. The Fade Margin of a long-distance radio link should be equivalent to the receiver s
antenna gain.
C. A Fade Margin is unnecessary on a long-distance RF link if more than 80% of the
first Fresnel zone is clear of obstructions.
D. The Fade Margin is a measurement of signal loss through free space, and is a
function of frequency and distance.
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=9
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QUESTION: 10
What statement best describes the manual RF site survey report?
A. It is a series of notes taken during the interview with the network manager and given
to the site survey project manager.
B. It is a one-page network inspection summary used to create a certificate of network
compliance.
C. It contains the results from the RF coverage, capacity, and interference analysis.
D. It is an internal document used by the site surveying firm for network deployment,
and is not usually shown to the client.
E. It states the customer requirements, business justification, and a detailed budget for
the WLAN.
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=10
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QUESTION: 11
Why is it recommended for a wireless network administrator to disable 1 Mbps and 2 Mbps
data rates on the WLAN infrastructure? (Choose two)
A. To improve capacity in the BSS
B. To reduce the size of the AP s effective service area
C. To prevent 802.11b devices from associating
D. To maximize the range of the highest data rates
E. To prevent VoWiFi multicast frames
F. To enable support for long preambles
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=11
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QUESTION: 12
When replacing the antenna of a WLAN device with a similar antenna type that has a higher
passive gain, what antenna characteristic will decrease?
A. Beamwidth
B. Range
C. Active gain
D. Receive sensitivity
E. Fresnel Zone size
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=12
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QUESTION: 13
What word describes the bending of an RF signal as it passes from one medium to another
medium of a different density?
A. Diffraction
B. Reflection
C. Refraction
D. Diffusion
E. Scattering
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=13
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QUESTION: 14
Given: ABC Company performs top-secret government contract work and has recently
purchased an 802.11 Wireless Intrusion Prevention System (WIPS) to enforce their "NO
WIRELESS" network security policy. What attack type cannot be recognized by the WIPS?
A. Deauthentication
B. MAC Spoofing
C. Protocol Jamming
D. Eavesdropping
E. RF Jamming
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=14
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QUESTION: 15
What answers correctly complete the following sentence? ____________ and ____________
carrier sense functions are used to determine whether the wireless medium is idle or busy.
(Choose 2)
A. Passive
B. Pseudo-random
C. Virtual
D. Active
E. Physical
F. Interframe
G. Vector
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=15
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QUESTION: 16
What WLAN system feature is required to produce a scenario with the following configuration
on a single access point? (Choose 2) 1. SSID = Guest / BSSID = AA:AA:AA:AA:AA:AA /
VLAN = 22 / Subnet = 192.168.22.0 / RF Channel = 6 2. SSID = Corporate / BSSID =
BB:BB:BB:BB:BB:BB / VLAN = 33 / Subnet = 192.168.33.0 / RF Channel = 6 / User Type A
3. SSID = Corporate / BSSID = BB:BB:BB:BB:BB:BB / VLAN = 44 / Subnet = 192.168.44.0
/ RF Channel = 6 / User Type B
A. Multiple WLAN Profiles
B. Call Admission Control
C. Virtual Cell with SCA
D. Access Categories
E. User-based authentication
F. Dual-radio AP hardware
G. Integrated DHCP server
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=16
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QUESTION: 17
Given: You are an independent contractor, hired to perform an indoor site survey and network
design for ABC Hotel. The network will support both hotel staff and guest users. You are
interviewing the network manager to determine business, performance, and security
requirements for the future 802.11 WLAN. What questions should you ask the IT manager?
(Choose two)
A. What data cabling is currently installed in the rooms and throughout the hotel?
B. How much RF loss do you expect between hotel rooms?
C. Where are the RF dead zones located within the facility?
D. What types of applications will be used by the hotel staff?
E. Are there any radar systems in use at the hotel that would conflict with the WLAN?
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=17
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QUESTION: 18
During the discovery and connectivity process, client and AP stations exchange information
about their supported data rates. After the association, how do client and AP stations select the
supported data rate that will be used to send an 802.11 data frame?
A. During the association, the client and AP agree to use the same transmit rate, but
either station can request a change at any time after the association.
B. The client and AP each choose the optimal data rate to use independently of one
another, based on their own experience of the RF link.
C. The client and AP may use different transmit rates, but the AP determines the data
rate that will be used by each client station in the BSS.
D. The client and AP may use different transmit rates, but the client determines the data
rate that it will use and the data rate that the AP will use when communicating to the
client.
E. The client and AP may use a different transmit rates, but the transmit rate is
determined by the peer station, based on the peer s experience of the RF link.
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=18
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QUESTION: 19
ABC Company has a 2.4 and 5 GHz WLAN deployment supporting four bands in the 5 GHz
range (UNII 1, UNII 2, UNII 2e, and UNII 3). DFS functionality is enabled as required by the
regulatory domain. Band steering is also enabled to encourage dual-band clients to use
frequency bands with more capacity. Your performance analysis shows that many dual-band
VoWiFi client devices will move back and forth between 2.4 and 5 GHz as the user roams
throughout the building. All APs have 2.4 and 5 GHz radios enabled. This "band hopping"
behavior is viewed by network staff to be undesirable. What is the most likely cause of the
unpredictable client band selection behavior?
A. Interference from 5 GHz radar sources has increased frame corruption and retries on
channels 36-48 in UNII 1.
B. 5 GHz frequencies offer better RF penetration than 2.4 GHz, but 2.4 GHz offers
more voice call capacity and lower latency than 5 GHz.
C. The voice client does not support DFS, and therefore experiences some 5 GHz
coverage holes as it moves through the network.
D. The client s band selection algorithm prefers 5 GHz, but band steering behavior
usually steers 75-85% of client devices to 2.4 GHz.
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=19
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QUESTION: 20
Given: You were previously on-site at ABC s facility to conduct a pre-deployment RF site
survey. The WLAN has been deployed according to your recommendations and you are onsite again to perform a network validation. When performing this type of post-deployment RF
site survey for VoWiFi, what are two steps that must be performed? (Choose two)
A. Coverage analysis to verify appropriate coverage and roaming boundaries
B. Spectrum analysis to locate and identify RF interference sources
C. Hidden node analysis to identify and relocate existing hidden nodes
D. Protocol analysis to discover channel use on neighboring APs
E. Application analysis with an active phone call on a VoWiFi handset
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=20
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QUESTION: 21
Given: To ease user complexity, your company has implemented a single SSID for all
employees. However, the network administrator needs a way to control the network resources
that can be accessed by each employee based on their department. What WLAN feature
would allow the network administrator to accomplish this task?
A. SNMP
B. VRRP
C. RBAC
D. IPSec
E. WIPS
F. WPA2
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=21
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QUESTION: 22
As a consultant, you ve been hired by XYZ Company to provide recommendations about client
device selection, operation, and interoperability. What information should be considered to
help them choose the right WLAN client devices?
A. 802.11n OFDM is more susceptible to high-power, narrowband interference than
802.11a OFDM.
B. In order to earn Wi-Fi Alliance certification, 802.11n clients stations are required to
support both 2.4 and 5 GHz frequencies
C. 802.11a/g devices may support WMM, but all 802.11n devices are required to
support WMM.
D. An 802.11g/n AP that is configured to support only OFDM data rates will allow
HR/DSSS devices to associate.
E. When HR/DSSS devices are present, HT MCS rates are disabled for the entire BSS.
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=22
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QUESTION: 23
Given: ABC Hospital is planning a Wi-Fi infrastructure upgrade where the 802.11b/g APs
would be replaced with new dual-radio HT (802.11n) APs. ABC wants to minimize the time
and cost associated with performing a new site survey, so they will be mounting all of the new
APs in the same locations and with the same cable drops as the existing APs. What is one
performance drawback with this deployment method?
A. Multipath will increase, causing excessive layer-2 retransmissions. The
retransmissions will cause latency for VoWiFi handsets.
B. Increased receiver sensitivity on the HT APs will cause them to continually change
channels to avoid co-channel interference.
C. If the existing UTP cabling is not Category 6 or better, the total Ethernet backhaul for
each AP will be limited to 100 Mbps.
D. In locations with line-of-sight to client devices and little multipath, the benefits of
MIMO may be less significant than in other areas.
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=23
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QUESTION: 24
Given: In a single channel architecture (SCA) WLAN system, 802.11n (HT) APs should not
share an SSID with 802.11g (ERP) APs. What is the reason for this recommendation?
A. Client stations would see two different sets of AP capabilities as they roam between
APs with the same BSSI
D.
B. The added range of 802.11n APs would cause additional co-channel interference.
C. The additional beacon material in 802.11n beacons would confuse 802.11b/g client
stations.
D. Beacons from 802.11n APs use 40 MHz channels, while beacons from 802.11g APs
use 20 MHz channels.
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=24
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QUESTION: 25
Which unit of measurement is a relative unit that is used to quantify power level changes?
A. dBm
B. dBW
C. dB
D. mW
E. VSWR
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=25
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QUESTION: 26
Given: Return Loss is the decrease of forward energy in a system when some of the power is
being reflected back toward the transmitter. What causes high return loss in an RF
transmission system?
A. A Voltage Standing Wave Ratio (VSWR) of 1:1
B. An impedance mismatch between devices in the RF system
C. Cross-polarization of the RF signal as it passes through the RF system
D. The use of different connector types in the RF system (e.g. N-type and SMA-type)
E. Low output power at the transmitter and use of a high-gain antenna
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=26
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QUESTION: 27
The OSI model is a 7-layer model for understanding the functions of a communication system.
What OSI sublayers are specifically addressed by the IEEE 802.11-2007 standard? (Choose 2)
A. MSDU
B. PPDU
C. PLCP
D. MAC
E. IP
F. 802.1X
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=27
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QUESTION: 28
The 802.11 protocol specifies a fundamental channel access method that is required for all
stations and is used in all IBSS and BSS networks. What is this fundamental channel access
method called?
A. DCF
B. PCF
C. HCF
D. EDCAF
E. HCCA
F. PCF/CA
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=28
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QUESTION: 29
What factor is NOT taken into account when calculating the Link Budget of a point-to-point
outdoor WLAN bridge link?
A. Operating frequency
B. Transmit antenna gain
C. Transmit power
D. Antenna height
E. Receive sensitivity
F. Distance
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=29
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QUESTION: 30
ABC Company is planning a point-to-multipoint outdoor bridge deployment with standalone
(autonomous) 802.11 bridge units. 802.1X/EAP will be used for bridge authentication. What
device in the bridge implementation acts as the 802.1X Authenticator?
A. The RADIUS server
B. All non-root bridges
C. A designated non-root bridge
D. The root bridge
E. The Ethernet switch
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=30
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QUESTION: 31
The IEEE 802.11a/n physical layer technologies utilize the 5 GHz frequency band. What is true
of the two lower bands (UNII-1 and UNII-2) in this frequency spectrum? (Choose two)
A. The frequency range of these bands is 5000 MHz - 5200 MHz
B. Each of these two bands contain five 20 MHz channels.
C. Regulatory domains worldwide require DFS and TPC in these bands.
D. These bands have a total combined bandwidth of 200 MHz.
E. 20 MHz in each of these bands is reserved as a guard band.
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=31
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QUESTION: 32
Given: Two co-located 802.11b/g/n APs can interfere with one another and cause contention
and collisions, even when the two APs are operating on non-overlapping channels (e.g. 1 & 6).
What deployment flaw could cause this problem? (Choose two)
A. The access points are mounted too closely to one another.
B. Reflective objects in the area are causing significant multipath.
C. A client station is using active scanning to probe for access points on multiple
channels.
D. The output power on the access points is too high.
E. A client station authenticates to both access points, but does not associate.
F. The access points are not synchronized to the same NTP server.
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=32
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QUESTION: 33
Given: XYZ Corporation is experiencing connectivity problems with their existing buildingtobuilding bridge link. A concrete wall on the roof of one building is partially blocking the
Fresnel Zone, and the connection is dropping many frames. The administrator moves the
antenna to an area not obstructed by the concrete wall and then realizes the RF cable cannot
reach the new location. If an extension cable is added to move the antenna, what are the likely
results?
A. The data throughput rate will increase because VSWR will decrease.
B. The Equivalent Isotropically Radiated Power (EIRP) will decrease.
C. The antenna s azimuth beamwidth will decrease.
D. The size of the Fresnel zone will increase.
E. The likelihood of a direct lightning strike will increase.
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=33
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QUESTION: 34
What specifications should be evaluated for an antenna before it is implemented in a WLAN
system? (Choose three)
A. Spectral efficiency
B. TPC support
C. Impedance in Ohms
D. Elevation Beamwidth
E. Return Loss Rating
F. Operating Frequencies
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=34
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QUESTION: 35
Given: The network administrator at XYZ Company recently attended a training class on
wireless security and realized that he should update the corporate security policy to address
WLAN technology. The network administrator is listing the items that should be addressed in
the security policy update, and has asked for your input. What WLAN topics should be
addressed by a company security policy? (Choose 4)
A. Theft prevention and data security of WLAN infrastructure devices
B. Wireless intrusion monitoring and response procedures
C. WLAN performance analysis baseline documentation
D. Password requirements for users and infrastructure equipment
E. Training of the IT staff on WLAN operational security
F. User density planning and AP client association thresholds
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=35
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QUESTION: 36
Given: As defined in the 802.11 specification, legacy Power Save requires an inefficient backandforth frame exchange process. Due to this inefficiency, many WLAN device
implementations use a variation of 802.11 Power Save to accomplish the same function. What
non-standard power save behavior is used by most Wi-Fi devices in actual implementations?
A. Client devices ignore the TIM field and automatically send PS-Poll frames after
every beacon.
B. After each beacon, the AP attempts to empty its frame buffer by sending Wake-onWLAN frames to wake each dozing client.
C. Request-to-Send and Clear-to-Send frame exchanges are used to trigger the delivery
of buffered data.
D. The Beacon interval is changed from the default 100 time units to 10 or less time
units.
E. Clients send null data frames to the AP and switch the power management bit from 1
to 0 to receive queued data.
F. Stations send a CTS-to-self frame to the AP with a very long duration period so they
can receive all of their buffered data at once.
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=36
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QUESTION: 37
Given: ABC Company has hired you to perform an initial site survey of their facility. During
an interview, the network manager informs you that the new wireless network must use 5 GHz
bands and OFDM, and VoWiFi handsets will be used extensively over the wireless network.
What items do you need to include in the RF site survey report? (Choose 2)
A. A heat map demonstrating signal quality in areas where VoWiFi is supported.
B. Codec types and sampling rates for each VoWiFi phone
C. Security parameters and configuration steps for VoWiFi handsets.
D. Test results from an active survey with a VoWiFi handset
E. Results of DFS compliance tests for each AP
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=37
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QUESTION: 38
ABC Company has just purchased a 6 dBi patch antenna. After performing some tests with the
6 dBi antenna, they have concluded that more antenna gain is needed to cover their outdoor
courtyard. When choosing an antenna with higher gain, what other antenna characteristic will
also change?
A. Fresnel Zone size
B. Maximum input power
C. Beamwidth
D. Impedance
E. VSWR Ratio
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=38
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QUESTION: 39
In an 802.11n 2.4 GHz BSS, what prevents each station from using the full network bandwidth
(e.g. 130 Mbps) when multiple clients are actively exchanging data with the AP? (Choose two)
A. Radio receiver hardware cannot process data as quickly as it can be transmitted.
B. Half of the bandwidth is allocated to uplink traffic and half to downlink traffic.
C. The DCF and EDCA coordination functions require backoff algorithms
D. WLAN devices cannot detect collisions and must receive positive frame
acknowledgment.
E. WLANs rely on the CSMA/CD protocol and must wait a collision detection period
after each frame is transmitted.
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=39
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QUESTION: 40
Given: The center frequency of channel 1 in the 2.4 GHz ISM band is 2.412 GHz (2412 MHz).
What is the center frequency of channel 2?
A. 2.413 GHz
B. 2.417 GHz
C. 2.422 GHz
D. 2.432 GHz
E. 2.437 GHz
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=40
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QUESTION: 41
What are two channel modes specified by the 802.11n (High Throughput) PHY? (Choose two)
A. 20 MHz
B. 20/40 MHz
C. 5/10 MHz
D. 22 MHz
E. 80 MHz
F. 160 MHz
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=41
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QUESTION: 42
In an 802.11b/g system, what channels are considered non-overlapping? (Choose two)
A. Channels 5 and 10
B. Channels 1 and 5
C. Channels 3 and 7
D. Channels 2 and 8
E. Channels 8 and 11
F. Channels 10 and 13
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=42
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QUESTION: 43
What problems may occur when there are hidden nodes in the BSS?
A. Increase in downlink (transmitted by AP) frame retries
B. High retransmission count for a subset of client stations
C. Use of frame fragmentation with fragment bursts
D. Excessive use of null data frames
E. Duration values vary widely in each data frame
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=43
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QUESTION: 44
How is throughput capacity scaled in a single channel architecture (SCA) WLAN system?
A. By increasing transmit power and placing APs that are on a single channel farther
from one another.
B. By adding more SSIDs to existing APs to spread users across different contention
domains.
C. By adding APs to increase the number of non-overlapping channel layers.
D. By using downlink data compression and uplink flow control at the AP.
E. By using a single 802.11n radio to transmit simultaneous downlink data streams to
different users.
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=44
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QUESTION: 45
What phrase defines Equivalent Isotropically Radiated Power (EIRP)?
A. Radio transmitter output power minus attached cable and connector loss
B. Radio transmitter output power only
C. Power supplied to the transmit antenna input plus antenna gain
D. Reflected power due to an impedance mismatch in the signal path
E. Power supplied from the transmission line to the antenna s input
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=45
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QUESTION: 46
ABC Company has thousands of Wi-Fi users accessing their network on a daily basis. Their
WLAN consists of 700 access points, 6 WLAN controllers, and a wireless network
management system. What network functions are performed by the enterprise-class WNMS?
(Choose three)
A. RF pre-deployment planning and post-deployment reporting of access point
locations on a floor plan
B. Performance and security monitoring of WLAN controllers with alarms and
notifications for administrative staff
C. Radio management, fast roaming, key caching, and other centralized control plane
operations
D. Centralized bridging of guest data traffic and application of firewall and QoS policies
to data
E. Management of WLAN controller configuration and provisioning of firmware
updates
F. Generating, encrypting, and decrypting 802.11 frames and collecting RF radio data.
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=46
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QUESTION: 47
Given: An 802.11 WLAN transmitter that emits a 50 mW signal is connected to a cable with 3
dB loss. The cable is connected to an antenna with 16 dBi gain. What is the EIRP power
output?
A. 17 dBm
B. 20 dBm
C. 23 dBm
D. 27 dBm
E. 30 dBm
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=47
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QUESTION: 48
What phrase correctly completes the following sentence? When using WMM Power Save
operation, a wireless client device ______________.
A. Alternates between awake and dozing, depending on its need to transmit and receive
information
B. Enters a low-power radio state until it receives a WMM PS-Poll frame from the AP
C. Experiences higher throughput and lower latency than when operating in Active
mode
D. Powers down a subset of MIMO radio chains and transmits information at a slower
data rate
E. Buffers frames destined to the low-power AP until the AP wakes its radio and begins
beaconing again
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=48
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QUESTION: 49
When planning an access point deployment that utilizes Power over Ethernet (PoE) switches at
the network edge, what design decision could adversely affect the operation of 802.3af APs?
A. All ports on the Ethernet switch will be supporting Class 3 PoE powered devices.
B. Some APs are connected to a PoE switch and are also receiving power from an AC
outlet.
C. The Ethernet switch s uplink ports are not connected to an 802.3af-compliant core or
distribution Ethernet switch.
D. A gigabit Ethernet switch port supporting an 802.11a/g AP auto-negotiates to 100
Mbps.
E. The installation team is not informed that PoE support will reduce the recommended
maximum UTP cabling length from 100m to 50m.
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=49
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QUESTION: 50
Which IEEE 802.11 physical layer (PHY) specifications include support for and compatibility
of both OFDM and HR/DSSS? (Choose 2)
A. HR/DSSS (802.11b)
B. OFDM (802.11a)
C. ERP (802.11g)
D. HT (802.11n)
E. CCK (802.11b)
F. PBCC (802.11g)
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=50
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QUESTION: 51
What problems may exist for a multiple channel architecture (MCA) WLAN when its APs are
all operating at full power (typically 100mW)? (Choose two)
A. Wi-Fi enabled voice handsets with low transmit power can experience asynchronous
downlink and uplink performance.
B. WLAN client stations can experience the hidden node problem when located near
each other within the same cell.
C. The mismatched power between WLAN client stations and APs violates regulatory
and IEEE signal quality requirements.
D. Cell size may be too large, causing co-channel interference to adjacent cells and
reducing system capacity.
E. APs operating in the 2.4 GHz band would prevent microwave ovens and analog
video cameras from functioning.
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=51
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QUESTION: 52
Given: When designing a WLAN infrastructure implementation for high client density at a
public venue such as a conference or stadium, what are common best practices? (Choose 2)
A. Use high-gain omnidirectional antennas to improve SNR
B. Use directional antennas to isolate the RF propagation
C. Configure APs to transmit at or near their maximum power setting
D. Use WPA2-Personal security for ease of deployment
E. Disable 802.11n MCS rates to prevent high overhead protection mechanisms
F. Implement a band steering feature for dual-band clients
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=52
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QUESTION: 53
What statements accurately describe the RF cables and connectors that are used in an 802.11
WLAN system? (Choose three)
A. RF cables have upper and lower frequency range specifications.
B. 75 and 125 ohms are the typical impedances of 802.11 WLAN connectors.
C. Two RF connectors of the same type (e.g. SMA), manufactured by different
companies, may vary in specifications.
D. Every RF connector causes insertion loss.
E. Large diameter RF cables cause greater loss than small diameter cables.
F. Coaxial RF cables can be used to carry Power-over-Ethernet (PoE) to an outdoor
bridge mounted on a mast.
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=53
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QUESTION: 54
What frequency band is NOT specified for use by IEEE 802.11 radios?
A. 902 - 928 MHz ISM band
B. 2.4000 �2.4835 GHz ISM band
C. 4.94 � 4.99 GHz public safety band
D. 5.15 �5.25 GHz UNII band
E. 5.470 � 5.725 GHz UNII band
F. 5.725 �5.875 GHz ISM band
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=54
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QUESTION: 55
The client devices that connect to your network include a mix of dual-band 802.11n, singleband 802.11b/g, and some 802.11a/g. Your access points are configured with the same SSID
on both the 2.4 and 5 GHz bands. The APs are also configured to prioritize client connectivity
to 5 GHz. How does an AP perform band steering to encourage clients to use 5 GHz?
A. When the client sends a probe request in the 2.4 GHz band, the AP may reply with
information about the 5 GHz BSS.
B. The AP may ignore the initial probe requests or 802.11 authentication requests sent
in the 2.4 GHz band by dual-band clients
C. The AP may allow an 802.11 association with the client in the 2.4 GHz band, then
send unicast channel switch announcements to the client announcing the 5 GHz channel
as the new channel.
D. After receiving probe request frames from the same client in both bands, the AP may
send an association request frame to the client in the 5 GHz band.
E. The AP may allow an 802.11 association with the client in the 2.4 GHz band, then
the AP may perform a transparent client handoff by transferring the client s MAC
address to the 5 GHz radio.
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=55
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QUESTION: 56
What statement is true concerning the use of Orthogonal Frequency Division Multiplexing
(OFDM) in IEEE 802.11 WLANs?
A. 802.11a and 11n use six (6) "pilot" subcarriers as a reference for the receiver to
detect frequency and phase shifts of the signal.
B. 802.11a/g/n OFDM includes several combinations of modulation and coding to
achieve data rates from 1-600 Mbps.
C. With 802.11a OFDM, 16-QAM provides either 48 or 54 Mbps data rates, depending
upon coding rates.
D. 802.11n HT-OFDM utilizes 256-QAM, which increases the data rate from 54 Mbps
(with 64- QAM) up to 65 Mbps.
E. In 802.11a OFDM, forty-eight (48) subcarriers are used as parallel symbol
transmission paths to carry data.
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=56
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QUESTION: 57
What distinguishes an independent basic service set (IBSS) from an infrastructure basic service
set (BSS)?
A. An IBSS does not have a distribution system (DS), but a BSS does.
B. An IBSS does not require beacon frames, but a BSS does.
C. An IBSS does not support 802.11 authentication or association, but a BSS does.
D. An IBSS can only operate on a single channel, but a BSS can operate on multiple
channels.
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=57
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QUESTION: 58
What term describes the effect of increasing the intensity of an RF wave with an antenna by
focusing the energy in a specific direction?
A. Spatial Multiplexing
B. Active Amplification
C. Beam Compression
D. Passive Gain
E. Isotropic Radiation
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=58
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QUESTION: 59
What features are most often configurable within 802.11 WLAN client utilities? (Choose two)
A. Frame generator utility
B. Power management
C. Co-channel interference threshold
D. Roaming aggressiveness
E. AES key and block size
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=59
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QUESTION: 60
What can cause an excessively high VSWR (Voltage Standing Wave Ratio) in a WLAN RF
transmission line?
A. An impedance mismatch in the RF cables and connectors
B. Reflected direct current (DC) voltage on the main RF signal line
C. Attenuation of the RF signal as it travels along the main signal path
D. Crosstalk (inductance) between adjacent RF conductors
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=60
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QUESTION: 61
What statement about 802.11 WLAN performance is true?
A. Use of larger frame sizes results in greater throughput in low interference
environments.
B. BSS support for 65 KB A-MPDUs will increase the maximum data rate available to
client devices.
C. In 802.11n, changing the security mechanism from WPA2-Personal to WPA2Enterprise will enable the HT MCS rates.
D. Compared to an Independent BSS, an Infrastructure BSS can provide almost twice
the throughput between wireless nodes.
E. Use of short guard intervals improves reliability and throughput in high multipath
environments
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=61
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QUESTION: 62
In WLAN security, which authentication methods always create Layer 2 dynamic encryption
keys? (Choose two)
A. HTTPS Captive Portal
B. WEP
C. WPA2-PSK
D. EAP-TLS
E. Shared Key
F. TKIP
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=62
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QUESTION: 63
Given: ABC Company has hired you to perform an indoor site survey of their 7-story facility.
ABC Company owns the building and rents out unused floors (floors 2 and 4) to other
companies, and the other companies use 802.11 WLANs already. ABC Company wants all of
the offices they occupy to be surveyed as part of the project. What actions should be
recommended as part of the site survey project? (Choose two)
A. Verify that RF signals from ABC s APs are not penetrating outside the perimeter of
the building.
B. Determine how much signal strength is bleeding between floors.
C. Locate wiring closets on each floor occupied by ABC Company.
D. Identify security best practice violations on neighboring WLANs.
E. Verify that ABC s APs are not directly above or below APs on adjacent floors.
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=63
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QUESTION: 64
What factors influence the distance that an RF signal can be effectively received? (Choose 4)
A. Transmitting station s antenna type
B. Receiving station s radio sensitivity
C. Free Space Path Loss
D. MAC layer encryption
E. Transmitting station s output power
F. Temperature in the Fresnel zone
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=64
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QUESTION: 65
What three cipher suites are specified by the IEEE 802.11-2007 standard? (Choose three)
A. Counter Mode with CBC-MAC Protocol
B. Wi-Fi Protected Access v1 and v2
C. Internet Protocol Security
D. Extensible Authentication Protocol
E. Internet Key Exchange v2
F. Wired Equivalent Privacy
G. Temporal Key Integrity Protocol
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=65
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QUESTION: 66
As an RF wave propagates through space, the wave front experiences natural expansion that
reduces its signal strength in an area. What term describes the rate at which this expansion
happens?
A. MIMO equalization
B. Inverse square law
C. Path spread phenomenon
D. Fresnel zone thinning
E. Ohm s law
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=66
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QUESTION: 67
What advantages does using predictive site survey modeling software offer over performing a
manual site survey? (Choose two)
A. Predictive modeling software can predict the ideal access point location 100% of the
time, whereas the results from manual surveying are less reliable.
B. Predictive modeling software makes it simple to assess multiple different AP
locations and then adjust and display the AP s expected coverage pattern in almost realtime.
C. Predictive modeling software provides more reliable data than manual surveys when
fine-tuning and validating access point placement after the installation.
D. The exact impact of interference sources from external networks can be more
accurately measured when using predictive modeling software than with manual
surveys.
E. It takes less time to create an initial site survey for a large facility when using
predictive modeling software than when performing a manual survey.
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=67
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QUESTION: 68
What term correctly completes the following sentence? 802.11a/b/g used a mandatory 800ns
guard interval. 802.11n introduces an optional short 400ns guard interval. Guard intervals (GI)
are necessary in OFDM to reduce the likelihood of interference between two consecutive
____________.
A. Frames
B. Packets
C. Segments
D. Bits
E. Bytes
F. Symbols
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=68
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QUESTION: 69
In a Wi-Fi client configuration utility, what feature is most likely to be user configurable?
A. 802.1p to WMM mappings
B. SNMPv3 Users
C. WMM-PS Dozing Interval
D. RADIUS Server IP Address
E. EAP Authentication Type
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=69
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QUESTION: 70
As XYZ Company s wireless specialist, you have been asked to troubleshoot some unexpected
frame patterns in a wireless protocol capture. Your peers explain that the network s beacon
frames are inconsistent. That is, the BSSID is the same for all beacons, but the source address
varies between three different addresses. What network configuration would cause this beacon
frame behavior?
A. A single AP supports multiple BSSs with different SSIDs
B. A virtual cell single channel network has been implemented
C. The beacons are from an IBSS instead of a BSS
D. Three APs still share the same default configuration.
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=70
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QUESTION: 71
In an 802.11n WLAN with a heterogeneous set of associated client devices including 802.11b,
11g, and 11n, what HT protection mode will the BSS use?
A. Mode 0: No protection mode (Greenfield)
B. Mode 1: Nonmember protection mode
C. Mode 2: 20 MHz protection mode
D. Mode 3: Non-HT mixed mode
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=71
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QUESTION: 72
Given: As you prepare for a site survey in a hospital, you have learned about several wireless
devices that support connection-oriented, real-time applications. These applications are
sensitive to service interruptions and require excellent signal quality, low latency, and low
loss. For that reason, it is important to identify sources of RF interference as well as building
characteristics that would cause RF blockage or dead spots. What systems or environmental
characteristics are most likely to cause interference or RF blockage and disrupt service for
these applications? (Choose two)
A. Microwave ovens
B. Long hallways
C. Elevator shafts
D. RFID chokepoints
E. Drywall offices
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=72
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QUESTION: 73
What term correctly completes the following sentence? In an IEEE 802.11 frame, the IP packet
is considered by the MAC layer to be a(n) _________.
A. MAC Service Data Unit (MSDU)
B. MAC Protocol Data Unit (MPDU)
C. Bridge Protocol Data Unit (BPDU)
D. PLCP Service Data Unit (PSDU)
E. PLCP Protocol Data Unit (PPDU)
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=73
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QUESTION: 74
What factors are likely to cause the greatest impact on the application layer throughput of an
802.11n client station in a 2.4 GHz HT BSS? (Choose three)
A. Use of WEP or TKIP for encryption instead of CCMP
B. Use of passphrase authentication instead of 802.1X/EAP authentication
C. Increasing the beacon interval from 100 to 200 (TUs)
D. RF interference from more than 10 nearby Bluetooth transmitters
E. Increasing or decreasing the number of spatial streams in use by the client station and
AP
F. Configuring the AP to perform off-channel IDS scans for rogue devices for 50 ms out
of every 20 seconds
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=74
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QUESTION: 75
Given: Joe runs a small hotel, and as a value added service for his customers he has
implemented a Wi-Fi hot-spot. Joe has read news articles about how hackers wait at hot-spots
trying to take advantage of unsuspecting users. Joe wants to avoid this problem at his hotel.
What is an efficient and practical step that Joe can take to decrease the likelihood of active
attacks on his customers wireless computers?
A. Implement Network Access Control (NAC) and require antivirus and firewall
software along with OS patches
B. Require EAP-FAST authentication and provide customers with a username/password
on their receipt
C. Implement an SSL VPN in the WLAN controller that initiates after HTTPS login
D. Enable station-to-station traffic blocking by the access points in the hotel
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=75
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QUESTION: 76
What factors will have the most significant affect on the amount of wireless bandwidth
available to each station within a BSS? (Choose two)
A. The number of client stations associated to the BSS
B. The power management settings in the access point s beacons
C. The presence of co-located (10m away) access points on non-overlapping channels
D. The data rates at which nearby client stations are transmitting and receiving data
E. The layer 3 protocol used by each station to transmit data over the wireless link
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=76
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QUESTION: 77
What features were introduced in the IEEE 802.11h amendment in order to uphold regulatory
requirements for 5 GHz operation? (Choose two)
A. Automated Radio Measurement (ARM)
B. Distributed Coordination Function (DCF)
C. Frequency Shift Keying (FSK)
D. Transmit Power Control (TPC)
E. Radio Resource Management (RRM)
F. Dynamic Frequency Selection (DFS)
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=77
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QUESTION: 78
What statements about the SSID are true? (Choose two)
A. The SSID is a security session identifier used in RSNs.
B. The SSID must be included in an association request frame.
C. The SSID is an alphanumeric value assigned to device manufacturers by the IEE
E.
D. The SSID is a pseudo-random number assigned to each client by an AP.
E. The SSID is an alphanumeric value with a maximum length of 32 octets.
F. When configuring a new network, creating an SSID is optional.
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=78
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QUESTION: 79
What statements describe industry practices for communication protocols between WLAN
controllers and controller-based APs? (Choose two)
A. All vendors use the same protocol so that APs will interoperate with WLAN
controllers from other vendors.
B. Some vendors use proprietary protocols, and some vendors use protocols based on
public standards like RFCs.
C. For most vendors, the controller-based APs maintain data and control tunnels with at
least two controllers for immediate failover and redundancy.
D. All vendors support at least one L2 or L3 broadcast protocol for controller discovery
by controller-based APs.
E. All vendors recommend using L2 (instead of L3) controller discovery and tunneling
protocols in large enterprises.
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=79
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QUESTION: 80
Given: As a consultant, you have been hired by ABC Company to implement an outdoor
WLAN connection between two buildings that are 2 kilometers (1.24 miles) from each other,
with no obstructions in between. Your first required objective is to create a point-to-point link
between the two buildings within the local regulatory body s 800 mW EIRP maximum. Your
second required objective is to provide an industry-standard security solution capable of
supporting mutual authentication. As an optional objective, you must minimize the amount of
interference from, and to, nearby WLAN networks. You install an OFDM wireless bridge at
each building, configuring one in root mode and the other in non-root mode. You set each
radio for 100 mW (20 dBm) and attach 9 dBi omni-directional antennas to both. You
configure the network for WPA2-Enterprise with PEAPv0/EAP-MSCHAPv2 authentication.
Which statement is true about the solution you chose to deploy?
A. Your solution meets both required objectives and the optional objective.
B. Your solution meets the first required objective and the optional objective, but not
the second objective.
C. Your solution meets the second required objective and the optional objective, but not
the first required objective.
D. Your solution meets neither required objective but meets the optional objective.
E. Your solution meets both required objectives, but does not meet the optional
objective.
F. Your solution does not meet either required objective, or the optional objective.
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=80
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QUESTION: 81
What statement about the IEEE 802.11e QoS facility is true?
A. 802.11 QoS is achieved by giving high priority queues a statistical advantage at
winning contention.
B. Four 802.1p user priorities are mapped to eight 802.11 transmit queues.
C. When the Voice queue has frames awaiting transmission, no data will be transmitted
from the Best Effort queue.
D. To improve efficiency, Block Acknowledgments are required for Voice and Video
WMM queues.
E. 802.11 control frames are assigned to the 802.11 EF priority queue.
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=81
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QUESTION: 82
In an enterprise WLAN, what condition will prevent a dual-band HT client device from
performing a fast and seamless transition (i.e. latency-sensitive applications are not disrupted)
between two access points that are managed by the same WLAN controller?
A. The current AP is using channel 1 and the new AP is using channel 40.
B. The SSID of the current AP does not match the SSID of the new AP.
C. The current AP supports only ERP and the new AP is HT capable.
D. The access points are hiding the SSID in Beacons and Probe Response frames.
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=82
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QUESTION: 83
In addition to throughput enhancements, what other improvements does 802.11n provide when
compared with 802.11a/g? (Choose 2)
A. Introduces "fast transition" roaming protocols for VoWiFi phones
B. Better link reliability between 802.11a/b/g client devices and 802.11n APs
C. Improves service quality for real-time applications at greater distances
D. Increases in receive sensitivity enhance RTLS location accuracy
E. Stronger security with more robust encryption modes.
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=83
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QUESTION: 84
What statements about the beamwidth of an RF antenna are true? (Choose two)
A. The lower the gain of an antenna, the more narrow one or both beamwidths become.
B. The beamwidth patterns on an antenna polar chart indicate the point at which the RF
signal stops propagating.
C. Horizontal and vertical beamwidth are calculated at the points in which the main lobe
decreases power by 3 d
B.
D. Horizontal beamwidth is displayed (in degrees) on the antenna s Azimuth Chart.
E. Antenna beamwidth is measured in units of decibels relative to an isotropic radiator
(dBi).
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=84
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QUESTION: 85
When compared with legacy Power Save mode, how does WMM-PS improve voice device and
application performance?
A. WMM-PS identifies and prioritizes incoming VoIP data and delivers it immediately
B. WMM-PS uses a trigger-and-delivery method that eliminates the need for PS-Poll
exchanges
C. WMM-PS requires scheduled service periods for predictable uplink data delivery.
D. WMM-PS allows the WLAN transceiver to disable more components when in a low
power state.
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=85
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QUESTION: 86
Given: You are on-site to perform a post-deployment site survey. When verifying a multiple
channel VoWiFi deployment using a VoWiFi handset, which aspect is most important?
A. Performing protocol analysis with a single wireless adapter that is scanning all
channels in use
B. Testing a constant conversation or handset tone while roaming from area to area, or
performing an active survey
C. Configuring DSCP-to-802.11e QoS maps on the handset for each access category.
D. Verifying the orientation/polarity of all omni-directional antennas in use by the
VoWiFi clients.
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=86
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QUESTION: 87
When performing a site survey for a Multiple Channel Architecture (MCA) system in a multitenant building with six floors, what aspect should you, as the site surveyor, keep in mind?
A. All doors and windows in the building should be open during the site survey to
assess maximum coverage range.
B. The omni-directional antennas of the access points should be oriented parallel to the
floor to maximize the coverage pattern across as many floors as possible.
C. The channel reuse pattern should be three dimensional with the RF cell extending
coverage of each access point to other floors.
D. The Fresnel Zone is completely blocked between floors so each floor is considered a
separate site survey.
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=87
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QUESTION: 88
What is required to establish a high quality 2.4 GHz RF link at a distance of 3 miles (5
kilometers)?
A. Minimum output power level of 1 W
B. Accurate Earth Bulge calculations
C. Directional antennas at each endpoint
D. A minimum antenna gain of 13 dBi at both endpoints
E. A Fresnel Zone that is at least 60% clear of obstructions
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=88
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QUESTION: 89
Prior to association, what parameter can 802.11 client devices measure and use to select the
optimal access point for association?
A. Signal strength of access point beacons
B. Proximity to potential access points
C. Retry rate of probe request and response frames
D. Average round trip time to reach the IP gateway
E. Number of nearby RF interference sources
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=89
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QUESTION: 90
What is an advantage of using WPA2-Personal instead of WEP-128 as a security solution for
802.11 networks?
A. WPA2-Personal uses 802.1X/EAP for authentication, and WEP-128 uses preshared
keys.
B. WPA2-Personal is based on IEEE 802.11 industry standards, but WEP is not.
C. WPA2-Personal uses CCMP for encryption, and WEP-128 uses TKIP for
encryption.
D. WPA2-Personal uses dynamic encryption keys, and WEP-128 uses static keys.
E. WPA2-Personal requires complex 64-character hex keys, whereas WEP-128 requires
weak 26- character hex keys.
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=90
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QUESTION: 91
Given: You are being interviewed by ABC Company for employment as a wireless site survey
engineer. The interviewing manager asks you what items should be included in a manual RF
site survey report. What answer would be accurate? (Choose two)
A. Itemized list of equipment, licenses, and support contracts required for the facility
B. RF heat map illustrating coverage and signal quality for each frequency band
C. Documentation noting physical security hazards in the RF coverage area
D. Documentation noting where each access point will be placed and how it will be
mounted
E. Documentation noting how each WLAN user group will authenticate to the network
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=91
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QUESTION: 92
What statement about 802.3af Power over Ethernet (802.3, Clause 33) is true?
A. If a dual-radio access point requires 12W to operate, a PoE power source supplies
15.4W to the powered interface.
B. 802.3af-compliant endpoint and midspan PSE devices support 10/100 as well as
Gigabit (1000Base-T) data rates.
C. Class 1 powered devices may use a maximum of 29W of power.
D. 802.3af-compliant Ethernet switches must be able to simultaneously support class 3
powered devices on every powered interface.
E. There are two classes of 802.3af PSEs: Type A supports up to 7W and Type B
supports up to 15W of supplied power.
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=92
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QUESTION: 93
What mechanisms are specified by the IEEE 802.11 standard to attempt to prevent multiple
radios from transmitting on the RF medium at a given point in time? (Choose three)
A. Random backoff timer
B. Clear channel assessment
C. Network allocation vector
D. Slot assessment value
E. Collision detection
F. Duty cycle detection
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=93
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QUESTION: 94
Given: As a station moves away from the access point to which it is associated, it changes its
data rate from 54 Mbps to 48 Mbps and then to 36 Mbps. What IEEE 802.11 term is used to
describe this functionality?
A. Dynamic Rate Switching
B. Multirate Control
C. Modulation and Coding Selection
D. Rate Set Selectivity
E. Adaptive Rate Management
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=94
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QUESTION: 95
If an 802.11 RF transmission reaches a receiving antenna simultaneously by direct and indirect
(reflected) paths, what effect will the reflected signal have on the signal that took the direct
line-ofsight path?
A. The direct signal will only be received if the reflected signal is more than 180
degrees out of phase.
B. The direct signal cannot be received if the indirect signal is less than 90 degrees outof-phase.
C. The signals will be distorted if the indirect signal arrives simultaneously at the
receiver, but 90 degrees out-of-phase.
D. If the signals are in-phase, they will combine together, cancel one another out, and
create a null.
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=95
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QUESTION: 96
Given: You have been sent as a consultant to a customer site that is experiencing problems
with some 2.4 GHz clients on their 802.11a/g network. After collecting information from the
company about the problem, your initial troubleshooting step is to find a client device
experiencing performance problems and observe its 802.11 frame exchanges in a protocol
analyzer. The retransmission rate for that client is 65% instead of the company s baseline,
which is 9%. Based on this information, what troubleshooting step should follow to isolate the
problem?
A. Check the frame decodes in the protocol analyzer and look for an excessive number
of deauthentication frames.
B. Evaluate the client s operating frequency band with a spectrum analyzer, looking for
a high noise floor or interference sources.
C. Utilize a laptop-based site survey and planning tool to create a predictive model of
the optimal AP placement in the customer s facility.
D. With a protocol analyzer, identify the client s roaming threshold settings and
reassociation behavior.
E. Install Wi-Fi endpoint security and reporting software on the client device to monitor
and log the retransmission behavior.
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=96
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QUESTION: 97
Which answer correctly completes the following sentence? The WMM certification, created
by the Wi-Fi Alliance, is based on the ___________ coordination function with support for
___________ QoS priority.
A. Hybrid, contention-based
B. Point, scheduled
C. Dynamic, distributed
D. Distributed, trigger-and-delivery
E. Enhanced, contention-free
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=97
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QUESTION: 98
What is a common feature of an 802.11 WLAN client utility? (Choose two)
A. Real-time retry monitor
B. AP Signal strength meter
C. Spectrum analyzer utility
D. VLAN configuration
E. Link statistics display
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=98
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QUESTION: 99
What item is essential for performing a manual RF site survey for a warehouse facility?
A. A facility map with an explanation of applications used in each area
B. I-Beam mounting kits for hanging temporary access points
C. High-gain omni antennas for APs mounted high on warehouse ceilings
D. Predictive site survey software that supports directional antennas
E. NEMA enclosures that protect APs used for the survey
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=99
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QUESTION: 100
Which antenna types are commonly used by indoor Wi-Fi devices in a MIMO diversity
implementation? (Choose two)
A. Dipole
B. Patch
C. Dish
D. Grid
E. Sector
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=100
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QUESTION: 101
Which data rate is supported by 802.11g radios that is not supported by 802.11a radios?
A. 9 Mbps
B. 11 Mbps
C. 12 Mbps
D. 54 Mbps
E. 65 Mbps
F. 130 Mbps
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=101
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QUESTION: 102
What information is transmitted in the Beacon management frames of an HT access point to
communicate about backward compatibility with ERP and HR/DSSS stations? (Choose two)
A. HT Protection mode
B. NonERP Present field
C. Secondary channel offset
D. RIFS mode
E. Power save mode of clients
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=102
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QUESTION: 103
Given: XYZ Company is planning to install a new 802.11 WLAN, but wants to upgrade its
wired infrastructure first to provide the best user experience possible. XYZ has hired you to
perform the RF site survey. During the interview with the network manager, you are told that
the new Ethernet edge switches will support VoIP phones and 802.11 access points, both using
802.3af PoE. After hearing this information, what immediate concerns do you note?
A. VoIP phones and 802.11 access points should not be powered by the same edge
switch due to distortion.
B. The edge Ethernet switches will need to support 802.3at PoE in order to support both
access points and VoIP phones.
C. If the switches are in optimal locations for VoIP phones, they are likely to be
suboptimal locations for 802.11 APs.
D. The power budget in the edge switches must be carefully planned and monitored
based on the number of supported PoE devices.
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=103
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QUESTION: 104
Given: XYZ Company has decided to install an 802.11 WLAN system that will support 1000
wireless users, but they are concerned about network security. XYZ is interested in deploying
standardized security features. In addition to WPA2-Enterprise with PEAP and role-based
access control, XYZ would like to support management frame protection as well as a fast
secure roaming protocol for future mobile handsets. As XYZ Company selects a product to
deploy, what two IEEE amendments should be supported to provide the management frame
protection and fast secure roaming security features? (Choose two)
A. 802.11j
B. 802.11p
C. 802.11r
D. 802.11u
E. 802.11w
F. 802.11z
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=104
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QUESTION: 105
When a client moves to a new BSS within an ESS, what steps are part of the 802.11
reassociation process? (Choose two)
A. The client station transmits a Reassociation Request frame to its current access point.
B. The current access point informs the IP gateway of the reassociation.
C. The current access point triggers the client s reassociation service.
D. The new access point transmits a Reassociation Response to the client station with a
status value.
E. The client and new access point create unicast encryption keys.
F. The client station transmits a deauthentication frame to the current access point.
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=105
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QUESTION: 106
What causes of hidden nodes within a BSS would likely lead to an increase in collisions and
retries? (Choose two)
A. Data frames too large for the physical environment
B. Client stations broadcasting with too much power
C. Access points broadcasting with too little power
D. Client stations too close in proximity to each other
E. Obstacles between client stations causing attenuation
F. Large 802.11 cells with physically distributed stations
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=106
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QUESTION: 107
What terms accurately complete the following sentence? The IEEE 802.11-2007 standard
specifies mandatory support of the ___________ cipher suite for Robust Security Network
Associations, and optional use of the ___________ cipher suite, which is designed for use with
pre-RSNA hardware.
A. CCMP, TKIP
B. 802.1X/EAP, WEP
C. TLS, SSL
D. CCKM, WPA
E. RC5, RC4
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=107
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QUESTION: 108
Given: A WLAN transmitter that emits a 200 mW signal is connected to a cable with 3 dB
loss. If the cable is connected to an antenna with 10 dBi gain, what is the EIRP at the antenna
element?
A. 10 dBm
B. 13 dBm
C. 20 dBm
D. 26 dBm
E. 30 dBm
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=108
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QUESTION: 109
In an infrastructure Basic Service Set (BSS), how does the passive scanning process occur?
A. Access points broadcast Beacons on all channels of each radio within the regulatory
domain. Nearby client stations record information found in the Beacons for use in the
association process.
B. Client stations broadcast Probe Request frames on all supported channels in the
regulatory domain. Nearby access points respond with Probe Response frames. Client
stations record information in the Probe Response frames for use in the association
process.
C. Client stations broadcast Probe Request frames on the single channel for which they
are programmed. Nearby access points respond on that channel with Probe Response
frames. Clientstations record information found in the Probe Response frames for use in
the association process.
D. Access points broadcast Beacons on a single channel for which it is programmed.
Nearby client stations listen for Beacon frames and record information found in the
Beacons for use in the association process.
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=109
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QUESTION: 110
When a client station sends a broadcast probe request frame with a wildcard SSID, how do APs
respond?
A. After waiting a SIFS, all APs reply at the same time with a probe response.
B. After waiting a SIFS, a designated AP sends an ACK, and then replies with a probe
response.
C. Each AP sends its own ACK, and then follows the ACK with a probe response.
D. For each probe request frame, only one AP may reply with a probe response.
E. Each AP responds in turn after preparing a probe response and winning contention.
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=110
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QUESTION: 111
The IEEE 802.11-2007 standard requires ERP capable devices to be backward compatible with
devices using which other 802.11 physical layer specifications (PHYs)? (Choose two)
A. DSSS
B. FHSS
C. HR/DSSS
D. ERP-PBCC
E. DSSS-OFDM
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=111
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QUESTION: 112
Which features are incorporated in the 802.11-2007 specification and are recommend for robust
WLAN client security? (Choose 2)
A. SSID hiding
B. CAPWAP with DTLS
C. 802.1X/EAP
D. CCMP cipher suite
E. IPSec VPN
F. MAC address whitelists
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=112
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QUESTION: 113
What is the intended use for the WLAN hardware shown in the exhibit? cwna&c=PW0105&q=1
A. Mounting a lightning arrestor to a grounding rod
B. Mounting an omnidirectional antenna to a mast
C. Mounting an RF amplifier to a dipole antenna
D. Mounting a PoE injector to a perforated radome
E. Mounting an access point to a site survey tripod
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=113
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QUESTION: 114
What is the purpose of the WLAN component shown in the exhibit? cwna&c=PW0-105&q=1
A. Connecting an unterminated coaxial RF cable to an N-type female connector on an
antenna
B. Adapting an antenna with an SMA connector to an AP with an N-type female
connector
C. Connecting a lightning arrestor (gas discharge tube) to a grounding rod cable
D. Providing a fixed amount of signal attenuation between a signal source and an SMA
antenna connector
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=114
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QUESTION: 115
What is the general type and purpose of the application shown in the exhibit? cwna&c=PW0105&q=1
A. Laptop-based Site Survey Utility - Creating a list of necessary APs and plotting their
locations on a floor plan
B. Wireless Network Management System - Managing multiple autonomous APs
through the SNMP protocol
C. 802.11 Protocol Analyzer - Capturing and decoding 802.11 frames for the purpose of
troubleshooting and optimization
D. Laptop-based Spectrum Analyzer - Monitoring the RF spectrum for interference
sources and improper system operation
E. WLAN Discovery Tool - Locating and identifying secured and unsecured WLAN
access points
F. Wireless Intrusion Protection System - Monitoring 802.11 frame exchanges for
performance and security analysis and reporting
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=115
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QUESTION: 116
For what reason would the AP enclosure shown in the exhibit be used in an indoor WLAN
deployment at an industrial facility? (Choose 2) cwna&c=PW0-105&q=1
A. Aesthetic requirements
B. Physical security and theft prevention
C. Protection from environmental conditions
D. Reduce transient RF interference
E. 802.11 security compliance
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=116
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QUESTION: 117
Using the exhibit as a reference, cwna&c=PW0-105&q=1 what is the maximum number of
spatial streams that could be used for a downlink HT-OFDM transmission from AP-1 to STA3?
A. One spatial stream, because the BSS must maintain backwards compatibility with
STA-2, which supports only 802.11g (ERP) without MIMO or multiple spatial streams.
B. Two spatial streams, because the number of spatial streams for an HT-OFDM
transmission is limited to the capabilities of the least capable HT station in the BSS.
C. Two spatial streams, because the third transmit chain in the HT AP must be used
simultaneously for protection mechanisms with the 802.11g (ERP) station.
D. Three spatial streams, because HT-OFDM transmissions will be preceded with
protection mechanisms using a basic data rate for STA-2 and possibly STA-1.
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=117
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QUESTION: 118
What is the approximate beamwidth of the antenna displayed in the exhibit? cwna&c=PW0-
105&q=1
A. 15 degrees
B. 30 degrees
C. 50 degrees
D. 70 degrees
E. 120 degrees
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=118
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QUESTION: 119
Given the Wi-Fi certification shown in the exhibit, what statement is FALSE about this device?
cwna&c=PW0-105&q=1
A. This client device supports protection mechanisms such as RTS/CTS and/or CTS-toSelf.
B. This client device supports both TKIP and CCMP cipher suites.
C. 300 Mbps is the maximum supported data rate for this device.
D. This client device supports the ERP, OFDM, and HT physical layer specifications.
E. This client device supports X.509 certificates for EAP authentication.
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=119
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QUESTION: 120
What type of RF transmitter is shown in both of the spectrum analysis exhibits?
cwna&c=PW0-105&q=1 <img src="http://www.TwPass.com/Exams/images/CWNA/PW0105_page56_1.png" />
A. Military radar
B. Bluetooth mouse
C. Microwave oven
D. Wireless video camera
E. WIPS sensor
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=PW0-105&qno=120
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