computer networking

What is the Objective of Networking?
Communication between applications on different computers
Must understand application needs/demands
Traffic data rate
Traffic pattern (bursty or constant bit rate)
Traffic target (multipoint or single destination, mobile or fixed)
Delay sensitivity
Loss sensitivity

Four Steps to Networking
Communicating across a link

Connecting together multiple links (internetworking)

Finding and routing data to nodes on internetwork

Matching application requirements