BEng (Hons) Telecommunications
Cohort: BEngTEL/08/FT
Examinations for 2009 – 2010 / Semester 1
MODULE: NETWORK OPERATING SYSTEMS
MODULE CODE: OSS2108
Duration: 2 Hours
Reading time: 10 Minutes
Instructions to Candidates:
1.
Answer all questions.
2.
Questions may be answered in any order but your answers must
show the question number clearly.
3.
Always start a new question on a fresh page.
4.
All questions carry equal marks.
5.
Total marks 100.
This question paper contains 4 questions and 6 pages.
Page 1 of 6
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ANSWER ALL FOUR QUESTIONS
QUESTION 1: (25 MARKS)
a) List three characteristics and two potential problems of a peer-to-peer
environment.
(5 marks)
b) List three characteristics and two potential problems of a client/server
environment.
(5 marks)
c) Explain the difference between centralized and decentralized administration.
(5 marks)
d) Explain the difference between a workgroup and a domain environment.
(5 marks)
e) What is the difference between multiprogramming and multithreading?
(4 marks)
f) What is a process?
(1 mark)
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QUESTION 2: (25 MARKS)
a) What is the kernel of an OS?
(2 marks)
b) Compare and contrast the four main LAN topologies.
(8 marks)
c) Describe 5 key characteristics of an embedded OS?
(5 marks)
d) Explain the following Linux commands
1. ls
2. du
3. df
4. pwd
5. wc
6. grep
7. mount
8. su
9. cat
10. whoami
(10 marks)
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QUESTION 3: (25 MARKS)
a) Briefly explain the purpose of Windows Powershell?
(5 marks)
b) Name 3 ways software can be installed on Linux?
(3 marks)
c) What is an interrupt request?
(2 marks)
d) As the Network Engineer of “Institute of Technology” you notice the following
issues:
1. There are several applications available to students of the institution,
but each of them has different credentials. For example: students might
have different credentials for the resource centre system, online exams
facilities, Results verification system.
2. The IT dept has to maintain the multiple user accounts.
3. The IT department is unable to track logon records of students who
used a computer in the computer lab.
4. Each time there are security or software updates the technicians have
to install them one by one on each and every computer.
Assuming the educational institution runs only Windows operating System,
provide an appropriate client server solution to solve the above mentioned
problems. Your answer should clearly specify how each of the above
problems will be solved.
(10 marks)
e) With reference to your answer in (d) above, how could you extend your design
to cater for Replication?
(5 marks)
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QUESTION 4: (25 MARKS)
a) The Systems Administrator of Acme Company performs the backup of the
website database file every day at 15:50. The original file location is
/mnt/hda1/www/database.sql.
The
Administrator
copies
it
to
/mnt/sda1/backup/ folder. Provide an automated solution for this problem.
Assume that the system is running under Linux and that you have all the
necessary tools installed.
(5 marks)
b) A web developer wants to implement a Web server on his personal computer,
so that his work is accessible on the internet. Given that the developer has the
Following:

Only one Computer running Windows XP

ADSL connectivity
The developer wants his web server to run in Linux Environment, but still needs
his Windows XP Operating systems for other administrative work.
1. Is it possible for the web developer to have two operating systems working
simultaneously on his personal computer? Justify your answer.
(3 marks)
2. Provide the steps the web developer should follow to set up his web server.
Your answer should include any software packages used and necessary
configurations made.
(10 marks)
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3. The Web developer notices that his IP changes each time he restarts his
Router.
i.
Why does this happen?
(1 mark)
ii.
What solution can be provided for this issue?
(2 marks)
iii.
Which Linux command would you use to verify the status of the web
server, the database server and cron server?
(4 marks)
***END OF QUESTION PAPER***
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