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Inte 312: Computer Networks Question Paper

Inte 312: Computer Networks

Course:Bachelor Of Science In Information Technology

Institution: Kabarak University question papers

Exam Year:2014

KABARAK
UNIVERSITY

UNIVERSITY EXAMINATIONS
2013/2014 ACADEMIC YEAR

FOR THE DEGREE OF BACHELOR OF SCIENCE IN INFORMATION SCIENCE
INTE 312: COMPUTER NETWORKS
DAY: MONDAY

DATE: 07/04/2014
TIME: 11.00 - 1.00 P.M.

STREAM: Y3S1
INSTRUCTIONS:

? Section A is Compulsory. Attempt any other TWO questions from the remaining
sections

SECTION A (30 MARKS)
QUESTION ONE (30 MARKS)
1. a) Discuss the concept of a Computer Network and write a note on any of its five uses.

(6 Marks)
b) With respect to Geographical Scale, differentiate the types of Computer Networks
along with the transmission technology for each.

(8 Marks)
c) Explain the following concepts.
i.
Cookies

(2 Marks)
ii.
Broadcast

(2 Marks)
iii.
Point-to-Point links

(2 Marks)
iv.
Packet

(2 Marks)
v.
Multicasting

(2 Marks)
d) Use a five layer network to illustrate the differences between a Protocol, Service,

Layer and Interface.

(6 Marks)

SECTION B (20 MARKS)
QUESTION TWO (20 MARKS)
a) Explain why we have to use layering in Networks Software.

(3 Marks)
b) Discuss any six design issues for the layers.

(6 Marks)

c) Differentiate between:
i.
Connectionless Service

(4 Marks)
ii.
Connection Oriented Service

(4 Marks)
d) List the six Primitives that specify a Service and explain their meaning. (3 Marks)

QUESTION THREE (20 MARKS)
a) Explain the seven principles that were used to arrive at the OSI Reference Model.

(7 Marks)
b) Outline the architecture of the TCP/IP Reference model and explain its difference
from the OSI one.

(8 Marks)
c) Write a note on the following networks.
i.
ARPANET

(3 Marks)
ii.
NSFNET

(2 Marks)

QUESTION FOUR (20 MARKS)
a) With the aid of a well labelled diagram discuss the OSI reference Model in detail.

(8 Marks)
b) Explain the following Transmission Media with he support of well illustrated
diagrams.
i.
Magnetic

(2 Marks)
ii.
Twisted

(2 Marks)
iii.
Coaxial

(2 Marks)
iv.
Power Lines

(2 Marks)
v.
Fiber Optics

(2 Marks)
vi.
SNFRA-RED

(2 Marks)

QUESTION FIVE (20 MARKS)
a) There are four variants of wireless transmission technology. Discuss each in detail.

(8 Marks)
b) Discuss the Encryption Model for a symmetric key cipher with the aid of a well
labelled diagram.

(6 Marks)
c) Write a note on the following concepts.
i.
Transposition Cipher

(2 Marks)
ii.
Substitution Cipher

(2 Marks)
d) Explain the two cryptographic principles.

(2 Marks

Inte 312: Computer Networks Question Paper

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