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Computer Networks Question Paper

Computer Networks

Course:Diploma In Information Technology

Institution: Kca University question papers

Exam Year:2010

UNIVERSITY EXAMINATIONS: 2008/2009
STAGE IV EXAMINATION FOR DIPLOMA IN INFORMATION
TECHNOLOGY
DIT 402: COMPUTER NETWORKS
DATE: APRIL 2010 TIME: 1½HOURS
INSTRUCTIONS: Answer any THREE questions
Question One
a) Define the following terms
i. Data frame
ii. Network administrator
iii. Sneakernet (6 Marks)
b) With the aid of a diagram describe the logical topology of a token ring network.(4 Marks)
c) List and explain four merits of a server based network (4 Marks)
d) Discuss briefly microwave technology (6 Marks)
Question Two
a) Define the term protocol. Give three examples of common protocols used in Networks
(5 Marks)
b) Compare and contrast between CSMA/CD and CSMA/CA access Mechanisms (6 Marks)
c) Distinguish between a Network Operating System and a Stand-alone Operating System giving
examples of each (4 Marks)
d) Explain the principle operation of a Modem (5 Marks)
2
Question Three
a) Define the following network terminologies
i. Cross talk
ii. Bandwidth
iii. Attenuation
iv. Noise
v. Broadband (10 Marks)
b) With an aid of a diagram explain the TCP/IP architecture. (10 Marks)
Question Four
a) Explain the functions of the following network devices; give the layer at which each device is
found on the OSI reference model (10 Marks)
i. Gateway
ii. Router
iii. Bridge
iv. Switches
v. Hubs
b) Give advantages of using wireless media over cable based media (6 Marks)
c) Differentiate between the following:
i. Full duplex and half duplex transmission (2 Marks)
ii. Synchronous and asynchronous transmission (2 Marks)
Question Five
a) Define the term network troubleshooting (2 Marks)
b) The following are commands in networking. Describe their use:-
i. NSLOOKUP
ii. PING
iii. IPCONFIG (6 Marks)
c) Explain the following WAN Technologies (12 Marks)
i. ISDN
ii. ATM
iii. FRAME RELAY

Computer Networks Question Paper

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