Networking written by Santosh Chauhan
Unit 1 - Physical layer Computer Network: - A computer network is a group of two or more interconnected computer systems. You can establish a network connection using either cable or wireless media. Every network involves hardware and software that connects computers and tools. Goals and Applications of networks:- Network goals:- The main goals of network as follows. Resource sharing:- This is the main aim of a computer network. It means to make all programs peripherals and data available to any one computer on the network to all other computers in the network without regard to the physical locations of them. Thus user at large distances can share the resources or can see data of a computer in the same way that a local user uses them. Another aspect of resource sharing is load sharing. That is if required, a job can be performed using various computers in network by portionin...