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Unit 4: Introduction of Networks

• Networks are often classified as local area network (LAN) wide area network (WAN), Notes
metropolitan area network (MAN), personal area network (PAN), virtual private
network (VPN), campus area network (CAN) etc.

4.5 Keywords

Campus network: A campus network is a computer network made up of an interconnection
of local area networks (LAN’s) within a limited geographical area.

Coaxial cable: Coaxial cable is widely used for cable television systems, office buildings, and
other work-sites for local area networks.

Ease in Distribution: You can develop an extensive presentation folder for Google Earth
software and make that presentation available to everyone who has access to your network
storage location or web server. This is more convenient than sending the data via email when
you want to make it persistently available to a large number of people.
Global area network (GAN): A global area network (GAN) is a network used for supporting
mobile communications across an arbitrary number of wireless LANs, satellite coverage
areas, etc.

Home area network (HAN): A home area network (HAN) is a residential LAN which is used
for communication between digital devices typically deployed in the home, usually a small
number of personal computers and accessories.

Local area network (LAN): A local area network (LAN) is a network that connects computers
and devices in a limited geographical area such as home, school, computer laboratory, office
building, or closely positioned group of buildings.
Metropolitan area network: A Metropolitan area network is a large computer network that
usually spans a city or a large campus.
Personal area network (PAN): A personal area network (PAN) is a computer network used
for communication among computer and different information technological devices close
to one person.
Wide area network (WAN): A wide area network (WAN) is a computer network that covers a
large geographic area such as a city, country, or spans even intercontinental distances, using
a communications channel that combines many types of media.

Draw Parallels between web-based content and KMZ content via a network
link using Google Earth.

4.6 Self-Assessment Questions

1. An autoassociative network is:

(a) a neural network that contains no loops
(b) a neural network that contains feedback
(c) a neural network that has only one loop
(d) all of these

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