UNIVERSITY EXAMINATIONS: 2021/2022
EXAMINATIONS FOR THE DEGREE OF BACHELOR OF SCIENCE IN
INFORMATION SECURITY AND FORENSICS
BISF 3102: NETWORK OPERATING SYSTEMS
FULL TIME/PART TIME
DATE: DECEMBER, 2021 TIME: 2 HOURS
Instructions: Answer Question 1 and Any Other Two Questions
QUESTION 1: 20 MARKS
a) As the Systems Administrator of “Institute of Technology” you notice the following issues:
i. 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.
ii. The IT department t has to maintain the multiple user accounts.
iii. The IT department is unable to track logon records of students who used a computer
in the computer lab.
iv. 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. (6 Marks)
b) Using a well labelled diagrams explain how the following servers work
i. DHCP (4 Marks)
ii. DNS (4 Marks)
c) Suppose you attended a job interview as a System administrator and you were asked to give
the key difference between Windows NOS and Unix/Linux NOS. describe in details four
key highlights that you would give to showcase your mastery of both operating systems.
(4 Marks)
d) Explain the following commands used in the Unix/Linux environment (2 Marks)
i. grep
ii. cat
QUESTION 2: 15 MARKS
Suppose that you are the System Administrator of XYZ enterprise. You have been tasked with
the responsibility of choosing the NOS for the organization.
a) Required
i. Discuss any three factors that should consider when acquiring the NOS (3 Marks)
ii. Describe any three services that the NOS would perform (3 Marks)
b) Assume you have chosen Linux as the NOS for XYZ enterprise,
i. Describe the pre-installation conditions (3 Marks)
ii. Describe two approaches in which you would install it? (2 Marks)
c) Justify the reasons/situations when it would be necessary to choose (4 Marks)
i. Windows
ii. Unix/Linux
QUESTION 3: 15 MARKS
a) There are two basic types of Network Operating Systems (NOS), the peer-to-peer and
the client-server, with the help of a well labeled diagram describe the architectural designs
highlighting two advantages and two disadvantages of each. (6 Marks)
b) Differentiate between the following types of IP Addresses (4 Marks)
i. Static IP Address
ii. Dynamic IP Address
c) Using a well labeled diagram Discuss the client initialization process via DHCP
(5 Marks)
QUESTION 4: 15 MARKS
a) Give five key differences between Windows and Unix/Linux Operating Systems
(5 Marks)
b) Discuss five features of Domain Name Service (DNS) (5 Marks)
c) Giving examples discuss how mail service is implanted in Windows and Unix environment
(5 Marks)
