Servers are high-configuration computers that manage the resources of the network. The network operating system is typically installed in the server and so they give user accesses to the network resources. Servers can be of various kinds: file servers, database servers, print servers etc.

Clients are computers that request and receive service from the servers to access and use the network resources.

Peers are computers that provide as well as receive services from other peers in a workgroup network

Transmission media are the channels through which data is transferred from one device to another in a network. Transmission media may be guided media like coaxial cable, fibre optic cables etc; or maybe unguided media like microwaves, infra-red waves etc.

Connecting devices act as middleware between networks or computers, by binding the network media together. Some of the common connecting devices are:

1. Routers
2. Bridges
3. Hubs
4. Repeaters
5. Gateways
6. Switches

Network Operating Systems is typically installed in the server and facilitate workstations in a network to share files, database, applications, printers etc.

A protocol is a rule or guideline followed by each computer for data communication. Protocol suite is a set of related protocols that are laid down for computer networks. The two popular protocol suites are

1. OSI Model ( Open System Interconnections)
2. TCP / IP Model