Course Outline for KCSE/KICD Computer Studies: Introduction to Networking and Data Communication
10.00 INTRODUCTION TO NETWORKING AND DATA COMMUNICATION (24 LESSONS)
10.1.0 Specific Objectives
By the end of the topic, the learner should be able to:
a) Define computer networking terms
b) State the purpose of computer networks
c) Describe the elements of a network
d) Describe various types of networks
e) Describe various types of network topologies
10.2.0 Content
10.2.1 Definition of Terms
i) Computer network
ii) Data communication
10.2.2 Purpose and Limitations of Networking
Purpose
i) Resource sharing
ii) Remote communication
iii) Distributed processing facilities
iv) Cost effectiveness
v) Reliability
Limitations
10.2.3 Elements of Networking
a) Data Communication Media
- Communication with cables
i) Twisted pair cable
ii) Coaxial cables
iii) Fiber-optic cables - Communication without cables (wireless) e.g.
i) Microwave
ii) Satellite
iii) Radio transmission
b) Data Signal - Digital
- Analog
c) Communication Devices e.g. - Modems
- Network cards
- Hubs
d) Network Software - Operating systems
- Protocols
10.2.4 Types of Networks
- Local Area Network (LAN)
- Metropolitan Area Network (MAN)
- Wide Area Network (WAN)
10.2.5 Types of Network Topologies e.g.
- Ring
- Star
- Bus
