COMPUTER
NETWORKS:
A computer network is a collection of
connected computers that allows one computer to talk with another and share
resources, data, and software.
TYPES OF
COMPUTER NETWORKS:
- LAN (Local Area Network)
- PAN (Personal Area Network)
- MAN (Metropolitan Area Network)
- WAN (Wide Area Network)
LAN(Local
Area Network)
- A local area network comprises several connected computers
in a confined space, like an office or building.
- Through a communication medium like a twisted pair, coaxial
cable, etc., LAN is used to connect two or more personal computers.
- Due to the use of less expensive components such as hubs,
network adapters, and Ethernet cables, it is less costly.
- In a local area network, data transport happens incredibly
quickly.
- Local area networks offer higher security.
- Inside one individual, typically within a 10-meter radius,
a personal area network is set up.
- The term "personal area network" refers to a
network used to connect personal computing devices.
- Study scientist Thomas Zimmerman first proposed the
Personal Area Network.
- The personal area network covers a 30-foot area.
- The laptop, mobile phone, media player, and play station
are personal computer devices used to create the private area network.
- A metropolitan area network connects various LANs to create
a more extensive network that serves a greater geographic area.
- To communicate with the public and business sectors,
government organizations use MAN.
- In MAN, a telephone exchange line connects several LANs.
- RS-232, Frame Relay, ATM, ISDN, OC-3, ADSL, and other
frequently used protocols in MAN include.
- Its range is greater than that of a Local Area Network
(LAN).
WAN(Wide
Area Network)
- A wide geographic area, such as many states or an entire
country, is covered by a Wide Area Network.
- A Wide Area Network is a lot larger than a Local Area Network.
- A Wide Area Network connects multiple locations across a
broad geographic area through a phone line, fiber optic cable, or satellite
connectivity.