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)
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