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LAN (Local Area Network) PAN (Personal Area Network)
LAN is a short form of Local Area Network. It is a digital communication PAN is used to establish communication among the computers within the range of an individual. It can
system that interconnects a large number of computers and other be wired or wireless. It connects devices such as a computer, smartphone, tablet, printer, etc.
peripheral devices within a radius of less than 1 km. This type of
network is usually preferred for a smaller area such as a residence,
school, laboratory, university campus, or office building. By using the
LAN network, users can exchange data and messages in an easy and
fast way. Cables, Wireless Access Points (WAPs), and communication
devices are used to connect computers to the LAN.
MAN (Metropolitan Area Network)
MAN consists of two or more local area networks or campus area networks together that usually spans
several buildings in the same city or town.
Factbot
LAN LAN Like rivers flowing through landscapes,
data on the Internet travels across
The concept of a PAN first was introduced by networks in streams of information.
Thomas Zimmerman at M.I.T.'s Media Lab. It was
later supported by IBM's Almaden research lab.
WAN (Wide Area Network)
WAN is a digital communication system interconnects a large number of computers over a wide CAN (Campus Area Network)
geographical area. This network may operate on a worldwide or nationwide basis. In such a type
of network, there may not be a physical connection between computers. In WAN, telephone lines, CAN, also known as Cluster Area Network, connects two or more LANs Hostel
microwave, satellite links, etc. can be used as transmission medium. that are limited to specific geographical areas. For example, college
campus, office building, etc. A campus area network is larger than LAN Lab
since it may span in multiple buildings within a specified area. College
TOPOLOGY Library
LAN LAN LAN LAN
Topology refers to the geometric arrangement of computers or nodes in a network. The factors that
determine the type of topology are cost, flexibility, and reliability. There are five different types of
topologies. Let us learn about them.
Bus Topology
LAN LAN This topology connects all nodes to a single
common path. It is simple and easy to maintain.
You can connect additional nodes at any point
along its length. The major disadvantage of this
topology is that fault detection is very difficult.
Imagine computer networks as highways in the sky. What vehicles would travel on these
highways, and what destinations would they reach?
Computer Networking 103

