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
Types of networks WPAN Consumer home networking Connected home ‘experience’ Connect everything Low range, high power Office on the move
What is protocol ? Protocol: Set of rules Protocol suite: Combination of protocols Protocol stack: Protocols that send and receive data.
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?
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