Computer Networks


Presentation Description

Computer networks and type


Presentation Transcript

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Fazaia Degree College Risalpur

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Whiz’s File:

Whiz’s File Chapter 1 Reviewing computers Chapter 2 Pioneers of Computers Chapter 3 About the CPU Chapter 4 Storing Data Chapter 5 Whiz through Software Chapter 6 Introducing Spreadsheet Chapter 7 Programming Languages Chapter 8 More on Multimedia Chapter 9 Computer Networks




Contents Network Types of network LAN WAN Internet Email



What is Network?:

What is Network? A computer network is a group of interconnected computers. It allows the computers to communicate with each other and share resources and information.

Types of Network:

Types of Network Local area network wide area network

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LAN LAN stands for local area network. Small network of short distance. Allows the computers to share single disk drive and printer

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Devices connected on LAN are called nodes. Nodes are connected by wires called cables. Different types of cables include coaxial cable, twisted pair cable and fiber optics

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Coaxial Cable Twisted pair cable Fibre optic

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WAN WAN stands for wide area network WAN covers a large geographical area. Computers are connected through wires, cable, or satellite. Examples: Internet

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What is it???:

What is it??? It is a world wide publically accessible network of interconnected computers. It allows sharing of information. It allows connectivity from everywhere on earth.

Uses of internet:

Uses of internet It allow us to access information in all over the world. We can buy things online. We can access different educational videos. We can talk to our friends. We can send e.mails to our friends

IP Address:

IP Address A way to identify machines on a network A unique identifier

Structure of IP Address:

Structure of IP Address IP addresses consist of four sections Each section is 8 bits long Each section can range from 0 to 255 Written, for example, These four sections represent the machine itself and the network it is on.

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World wide collection of information that we can access on internet. This is user friendly. We need to install an application software called web browser to access WWW.

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Timothy Berners-Lee, a British computer scientist, developed the WWW in 1989 . It was developed to enable information-sharing between researchers working on similar projects in different countries.

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Email Stands for Electronic mail. Enables messages to be sent from one computer to another using telecommunication link. We send message to someone's electronic address We can send and receive email over the internet

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Click on compose to write a new message

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Write the email address of person you want to send email.

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Write what the email is about in the Subject box.

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Click on Cc to add email address of the person you want to send copy of this email. Click on Bcc if you want to send a copy of this email to other people but don’t want the main recipient to know about it.

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If you want to send a file such as application, letter or report, click on attach file

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