cbse 12th ip notes 2019 | what is computer network cbse 12th notes ? cbse 12th ip notes download?

Introduction

The advent of computer and communication technology, have affected our every walk of life. Observe the following daily-life examples-

 Watching Cable TV

   Withdrawing money (cash) from ATMs

Sending and receiving E-mails

Booking Railway or Air-lines Tickets.

Sending and receiving SMS through Mobile.

These services are provided by the collection of interconnected communicating devices, which make Communication Network.

The communication over network involves transfer of text/picture/audio/video data through wired or wireless transmission medium

What is Computer Network?

In simplest terms, the computer network can be defined as –

“A computer network is a collection of interconnected autonomous computers and other devices to share data and other resources.”