SS3 First Term Computer Studies Lesson Note – Networking

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WEEK ONE                                                                          

TOPIC:  NETWORKING

CONTENT: 

1. Definition of Networking
2. Types of Network
3. Network Topology
4. Network Devices

SUBTOPIC 1:            DEFINITION AND TYPES OF NETWORKING

Network literally means a collection of a large and widely distributed group of people or things such as stores, colleges, or offices that communicate with one another and work together as a unit or system.

A Computer Network, simply referred to as a network, can be defined as a system of two or more computers, terminals and communication devices linked by wires, cables, or telecommunication system in order to exchange data.

The network may be limited to a group of users in a local area (LAN), or it could be global in scope just like the Internet. The major reason network exist is to enable sharing of resources and information among interconnected devices.

TYPES OF NETWORK:

(i)  Ethernet

(ii)  Token Ring

(iii)  Arcnet

Ethernet:

Ethernet is a family of computer networking technologies for Local Area Networks (LANs), it is a protocol that controls the way data is transmitted over a Local Area Network. This network which was commercially introduced in 1980 uses wires (i.e. it is not a wireless technology) in form of either a bus or star topology and supports data transfer rates of about 10Mbps.

An ethernet port (jack or socket) is an opening on computer network equipment that Ethernet cables plug into.

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