1. NETWORK
Made by –Abhay goya

2. What is network
Network is a group of
devices to one another.
For ex. network of network of
telephone, or radio
network, or cable network
etc

3. NEED OF NETWORK
The need of network can be summarized in these
lines: the network is needed because
1. It breaks the barriers of distance , cost and time.
2. it is very cost effective as compared to telephone
networks.
3. All types of data viz.
audio, video, pictures, graphics etc. can be

4. Communication channel
Is the medium, which carries the message/
information / sound etc. sent by the
sender, and takes it to receiver's end

5. Components of
network
1. The sender
2. Communication channel- the
air
3. The receiver.

6. Five components of
network
1. Sender speaks through a communication
equipment, which is telephone, at his end.
2. The telephone converts the sender’s voice into
a signal which is carried through the telephone
cables to the receiver's end.
3. at receiver’s end, the signal reaches to the
communication equipment, telephone, which
converts the signal back to the voice form