types of networks

Topics: Computer network, Wide area network, Local area network Pages: 4 (610 words) Published: January 7, 2015
TYPES OF COMPUTER
NETWORKS

Maninder Kaur
professormaninder@gmail.com

What is Network?
• A network consists of two or more computers
that are linked in order to share resources (such
as printers and CDs), exchange files, or allow
electronic communications.
• The computers on a network may be linked
through cables, telephone lines, radio waves,
satellites, or infrared light beams.

Different Types of Networks
• Depending upon the geographical area covered
by a network, it is classified as:
– Local Area Network (LAN)

– Metropolitan Area Network (MAN)
– Wide Area Network (WAN)

– Personal Area Network (PAN)

Local Area Network (LAN)
• A LAN is a network that is used for communicating among
computer devices, usually within an office building or home. • LAN’s enable the sharing of resources such as files or hardware devices that may be needed by multiple users
•
• Is limited in size, typically spanning a few hundred meters, and no more than a mile
• Is fast, with speeds from 10 Mbps to 10 Gbps

• Requires little wiring, typically a single cable connecting to each device
• Has lower cost compared to MAN’s or WAN’s

Local Area Network (LAN)
• LAN’s can be either wired or wireless. Twisted pair,
coax or fibre optic cable can be used in wired LAN’s.
• Every LAN uses a protocol – a set of rules that governs how packets are configured and transmitted.

• Nodes in a LAN are linked together with a certain
topology. These topologies include:
– Bus
– Ring
– Star

• LANs are capable of very high transmission rates (100s
Mb/s to G b/s).

Local Area Network (LAN)

Advantages of LAN
• Speed
• Cost
• Security
• E-mail

• Resource Sharing

Disadvantages of LAN
• Expensive To Install

• Requires Administrative Time

• File Server May Fail

• Cables May Break

Metropolitan Area Network (MAN)
• A metropolitan area network (MAN) is a large
computer network that usually spans a city or a
large campus.
• A...
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