1. Compiled by: Jayakumar Balasubramanian
Web: http://www.jwritings.com
Email: b.jayakumar@gmail.com

2. Types of networks
 LAN

Same physical technology

No switching elements

Channel contention problem

Range: 10 m to 1 km
 WAN

Different physical layer technologies

Switching elements

Hosts and routers

Internet

3. Types of networks
 WPAN

Consumer home networking

Connected home ‘experience’

Connect everything

Low range, high power

Office on the move

4. Circuit switching Vs Packet switching

5. How these things work?

7. What is protocol ?
 Protocol: Set of rules
 Protocol suite: Combination
of protocols
 Protocol stack: Protocols
that send and receive data.

8. Some answers from protocols
 What type of cable or transmission media is used to
connect hosts on the network?
 How is data transmitted on the transmission media?
 How do the hosts on the network know when to
transmit data?
 How does each host know how much data can be
transmitted at a time?
 How can hosts using different operating systems
communicate?
 How can a host check the data received for
transmissions?

9. Web : http://www.jwritings.com
Email: b.jayakumar@gmail.com