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Computer Networks (Bbit 241) (Cisy 131) (Dbit 223) (Dcis 121) 1St Trimester 2016 Question Paper

Computer Networks (Bbit 241) (Cisy 131) (Dbit 223) (Dcis 121) 1St Trimester 2016

Course:Bachelor Of Business Information Technology

Institution: Kenya Methodist University question papers

Exam Year:2016

Computer Networks (BBIT 241) (CISY 131) (DBIT 223) (DCIS 121) 1st trimester 2016
KENYA METHODIST UNIVERSITY

END OF 1'ST 'TRIMESTER 2016 (EVENING) EXAMINATION

SCHOOL : SCIENCE AND TECHNOLOGY
DEPARTMENT : COMPUTING & INFORMATION SCIENCE
UNIT CODE : 'BBIT 241/CISY 131/ DBIT 223/DCIS 121
UNIT TITLE : 'INTRODUCTION TO COMPUTER NETWORKS
TIME : 2 HOURS

INSTRUCTIONS

Answer question one and any other two questions
Question One

Briefly describe the functions of the following networking devices:
(6 marks)
Bridge
Router
Gateway
Give four advantages of guided media over wireless media in data communications?
(4 Marks)
What do the terms simplex, half-duplex and duplex mean. Illustrate with examples.
(6 Marks)
Distinguish between a protocol and a standard.
(2 Marks)
State four Standards Organizations and explain their roles in networking.
(4 Marks)
What is the difference between an IP address and a MAC address?
(2 marks)
Distinguish between bandwidth, throughput and effective bandwidth.
(6 Marks)

Question Two
Describe and compare the following networking media, clearly stating advantages and disadvantages of each:
UTP and Coaxial

Fibre Optic and Shielded Twisted Pair
(12 Marks)
Using Kenya Methodist University for illustration, discuss four advantages of using networks.
(8 marks)

Question Three
Briefly explain what a client/server network model is and using an appropriate diagram, describe how the concept applies in networking.
(10 marks)
With a clear illustration, describe the OSI model, clearly outlining the function of each layer of the model.
(10 Marks)

Question Four

The physical topology of a computer network indicates how the devices in the network are arranged. Using clear illustration, discuss three common network topologies.
(12 Marks)
Discuss three factors that can affect the effectiveness of a wireless network.
(6 marks)
Distinguish between an extranet and a VPN.
(2 Marks)

Computer Networks (Bbit 241) (Cisy 131) (Dbit 223) (Dcis 121) 1St Trimester 2016 Question Paper

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