1. Define Network?
A network is a set of devices connected by
physical media links. A network is recursively is a connection of two or more
nodes by a physical link or two or more networks connected by one or more
nodes.
2. What is a Link?
At the lowest level, a network can consist
of two or more computers directly connected by some physical medium such as
coaxial cable or optical fiber. Such a physical medium is called as Link.
3. What is a node?
A network can consist of two or more
computers directly connected by some physical medium such as coaxial cable or
optical fiber. Such a physical medium is called as Links and the computer it
connects is called as Nodes.
