This 3-page document contains instructions and questions for a 2-hour Data Communication and Networking exam for Kendege Technical & Vocational College diploma students. The exam consists of 5 questions testing students' knowledge of topics like computer network definitions, network topologies, transmission modes, network components, cable types, fiber optic characteristics, transmission media, network classifications, OSI model layers and conditions for choosing transmission media. Students are instructed to answer all questions in the provided answer booklet.

1. ©June 2023 Kendege Technical & Vocational College Page 1
2920/301
DATA COMMUNICATION AND NETWORKING
JUNE 2023
TIME: 2 HOURS
KENDEGE TECHNICAL AND VOCATIONAL COLLEGE
DIPLOMA IN INFORMATION AND COMMUNICATION TECHNOLOGY
MODULE III
DATA COMMUNICATION AND NETWORKING
2 Hours
INSTRUCTIONS TO CANDIDATES
Answer ALL questions in answer booklet provided
All questions carry equal marks
Candidates should answer the questions in English
The paper consists of 2 printed pages
Candidates should check the question paper to ascertain that all the pages are printed as indicated
and that no question is missing

2. ©June 2023 Kendege Technical & Vocational College Page 2
1 a) Define the term computer networking (2 marks)
b) Identify and describe any three types of bounded media used in telecommunication
(8 marks)
c) By the aid of a diagram, describe the communication model identifying components of
communication (10 marks)
2 a) Using diagrams describe the following networks topologies
i. Star topology (2 marks)
ii. Ring topology (2 marks)
iii. Bus topology (2 marks)
iv. Mesh topology (2 marks)
b) Identify any three properties of matter (3 marks)
c) State any three effects of temperature on conductivity (3 marks)
d) Transmission modes can be classified into 3. Identify and describe the 3 modes (6 marks)
3 a) Computer networks are made of several components. Identify and explain 5 basic
components of a computer network. (10 marks)
b) Unshielded Twisted Pair cables is divided into levels, differentiate all the levels of the
cables. (5 marks)
c) Identify 5 characteristics of a fibre optic cable. (5 marks)
4 a) State and describe two unguided transmission media giving a key characteristic of each
(4 marks)
b) Identify and describe any three classification of computer networks (6 marks)

3. ©June 2023 Kendege Technical & Vocational College Page 3
c) These are the two services given by the layers to layers above them. Identify the services and
how they work. (4 marks)
d) Give any six advantages of computer networks in an organization. (6 marks)
5 a) Outline the OSI model giving the function of each layer (14 marks)
b) Identify and explain any three conditions to consider while choosing a transmission medium.
(6 marks)
THIS IS THE LAST PRINTED PAGE