Write a short note on networking?

Answer 1

Wide Area Networks (WANs), include their much higher data transfer rates, smaller geographic range, and lack of a need for leased telecommunication lines. Ethernet over unshielded twisted pair cabling, and Wi-Fi are the two most common technologies currently, but ARCNET,

Answer 2

This is an incredibly broad 'question'/request.

Ask a question that is directly answerable please.

Otherwise my answer can be: Networking sucks.

Or: Networking requires many parts of the OSI model, We need to first focus on the Physical layer, because if we cannot afford the parts of the network then there is no point in continuing.

IF you are to write about networking, I strongly suggest you consider the 7 layer OSI model of a network and simply walk through each layer with a quick description.