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Dcis 121:Introduction To Computer Network Question Paper

Dcis 121:Introduction To Computer Network

Course:Diploma In Computer Science

Institution: Kenya Methodist University question papers

Exam Year:2012

KENYA METHODIST UNIVERSITY

END OF 3''RD ''TRIMESTER 2012 (DAY) EXAMINATIONS
FACULTY : COMPUTING AND INFORMATICS
DEPARTMENT : COMPUTER SCIENCE & BUSINESS INFORMATION
UNIT CODE : DBIT 223/DCIS 121
UNIT TITLE : INTRODUCTION TO COMPUTER NETWORK
TIME : 2 HOURS

INSTRUCTIONS

Answer question ONE and any other TWO questions.

Question One

Define the following terms;

(10 Marks)

CSMA.
ARP.
LAN Switch
NIC Card
EMI

Differentiate between the following terms;

Serial versus parallel transmission.

(2 Marks)

Networking protocols versus Network topologies.

(2 Marks)

Coaxial versus twisted pair.

(4 Marks)

DHCP and DNS.

(2 Marks)

Question Two

The OSI reference model is a conceptual framework of standards for network communications;

Name the layers of the OSI model in their proper sequence.

(8 Marks)

Describe in detail any four layers of the OSI model.

(12 Marks)

Question Three

You are hired as the network engineer for Ubuntu systems. The network has THREE segments divided as follows;

Production – 76 computers.
R & D – 12 computers (wireless)
Finance and administration – 23 laptops

Create an effective IP Addressing Scheme for the network.

(17 Marks)

Advice on how the company would share a single internet connection.

(3 Marks)

Question Four

You are hired as a Security consultant for ABC Company;

In your design for a security solution, explain three key areas of an information system that you need to secure.

(12 Marks)

Under what circumstances would you recommend the following solutions
Firewall.
Access Control lists.
Data Encryption.

Anti spam

(8 Marks)

Dcis 121:Introduction To Computer Network Question Paper

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