3) Explain about the different type of computer net
Answers
Explanation:
A Computer Network can be defined as a group of computers and other peripheral devices that are linked together for the purpose of sharing data and hardware resources. Computer Networks help in information sharing, resource sharing, efficient use of storage timely communication, etc. The different types of computer networks are:
Personal Area Network (PAN) — This network is used to establish communication among computer devices within the range of 20 to 30 feet. This network maybe wired with computer buses (e.g. USB) or maybe a wireless network through Bluetooth.
Local Area Network (LAN) — It is a digital communication system that interconnects a large number of computers and other peripheral devices. This type of network is generally preferred within a smaller area such as an office building or a lab building (say within a radius of half a kilometer).
Campus Area Network (CAN) — This network connects two or more LANs that are limited to specific geographical area viz. college campus, office buildings, etc.
Metropolitan Area Network (MAN) — This network connects two or more local area networks or campus area networks together. It prefers routers, switches and hubs but doesn't extend beyond the boundaries of the immediate town/city.
Wide Area Network (WAN) — It is a digital communication system that interconnects a large number of computers in a wide area. This type of communication network can operate worldwide. In a WAN, telephone lines, microwave, satellite links, etc. can be used as transmission mediums.