Question

4.Long answer questions:-
(a)Explain different types of computer networks with example.​

Answer 1

Answer:

Explanation:

Two basic network types are local-area networks (LANs) and wide-area networks (WANs). LANs connect computers and peripheral devices in a limited physical area, such as a business office, laboratory, or college campus, by means of links (wires, Ethernet cables, fibre optics, Wi-Fi) that transmit data rapidly.

Answer 2

Answer:

LAN(Local Area Network)

<>Local Area Network is a group of computers connected to each other in a small area such as building, office.

<>LAN is used for connecting two or more personal computers through a communication medium such as twisted pair, coaxial cable, etc.

<>It is less costly as it is built with inexpensive hardware such as hubs, network adapters, and ethernet cables.

<>The data is transferred at an extremely faster rate in Local Area Network.

<>Local Area Network provides higher security.

PAN(Personal Area Network)

<>Personal Area Network is a network arranged within an individual person, typically within a range of 10 meters.

<>Personal Area Network is used for connecting the computer devices of personal use is known as Personal Area Network.

<>Thomas Zimmerman was the first research scientist to bring the idea of the Personal Area Network.

<>Personal Area Network covers an area of 30 feet.

<>Personal computer devices that are used to develop the personal area network are the laptop, mobile phones, media player and play stations.

MAN(Metropolitan Area Network)

<>A metropolitan area network is a network that covers a larger geographic area by interconnecting a different LAN to form a larger network.

<>Government agencies use MAN to connect to the citizens and private industries.

<>In MAN, various LANs are connected to each other through a telephone exchange line.

<>The most widely used protocols in MAN are RS-232, Frame Relay, ATM, ISDN, OC-3, ADSL, etc.

<>It has a higher range than Local Area Network(LAN).