Introduction to Computer Networking SS3 Data Processing Lesson Note

SPECIFIC OBJECTIVES: At the end of the lesson, pupils should be able to

1. Define networking, network design, network protocols and network topology
2. Explain the meaning of internet, intranet and extranet

INSTRUCTIONAL TECHNIQUES: 

• Identification, 
• explanation, 
• questions and answers, 
• demonstration, 
• videos from source

INSTRUCTIONAL MATERIALS: 

• Videos, 
• loudspeaker, pictures, 
• Data Processing for Senior Secondary Education by Hiit Plc, 
• WAPB Computer Studies for Senior Secondary I by Adekunle et al,
• On-line Materials.

NOTE

Networking

Networking is the practice of linking two or more computing devices together to share data. Networks are built with a mix of computer hardware and computer software.

Network Design

Computer networks also differ in their design. The two basic network design forms are client/server and peer-to-peer. Client-server networks feature centralised server computers that store email, Web pages, files and applications.

Network Topology

A network topology represents its layout or structure from the point of view of data flow.

Network Protocols

Communication languages used by computer devices are called network protocols. Yet another way to classify computer networks is by the set of protocols they support. Networks often implement multiple protocols with each supporting specific applications. Popular protocols include TCP/IP, the most common protocol on the Internet and in-home networks.

The Internet

The Internet is the global system of interconnected computer networks that use the Internet protocol suite (TCP/IP) to link devices worldwide. It is a network of networks that consists of private, public, academic, business, and government networks of local to global scope, linked by a broad array of electronic, wireless, and optical networking technologies. The Internet carries an extensive range of information resources and services, such as the interlinked hypertext documents and applications of the World Wide Web(WWW), electronic mail, telephony, and peer-to-peer networks for file sharing.

An intranet

An intranet is a private network that is contained within an enterprise. It may consist of many interlinked local area networks and also use leased lines in the wide area network. Typically, an intranet includes connections through one or more gateway computers to the outside Internet. The main purpose of an intranet is to share company information and computing resources among employees. An intranet can also be used to facilitate working in groups and for teleconferences.

An extranet

An extranet is a private network that uses Internet technology and the public telecommunication system to securely share part of a business‘s information or operations with suppliers, vendors, partners, customers, or other businesses. An extranet can be viewed as part of a company’s intranet that is extended to users outside the company. It has also been described as a “state of mind” in which the Internet is perceived as a way to do business with other companies as well as to sell products to customers.

 EVALUATION:

1. Explain the meaning of networking, network design, network protocols and network topology               

1. Explain the meaning of internet, intranet and extranet

CLASSWORK: As in evaluation

CONCLUSION: The teacher commends the students positively