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Communication: Networking allows people to talk to each other through email, messages,
and video calls. It helps teams in different places work together easily.
Cost-Effective: Buying separate software for each computer can be expensive. Storing it on
one server and sharing it with other computers is cheaper.
Security: Security tools like firewalls and passwords are needed to protect data and systems
from being hacked or misused.
DIFFERENT TYPES OF NETWORKS
Computer networks come in different sizes, from small home or office networks linking a few devices
to the large Internet connecting millions globally. These connections can be wired or wireless.
Some of the common types of networks are:
Personal Area Network (PAN): A PAN is a network
that connects devices within the personal range of an
individual, such as smartphones, tablets, laptops, and
wearable devices. Bluetooth and infrared are common
technologies used for PANs.
Campus Area Network (CAN): A CAN is a network that
Hostel connects multiple LANs within a university campus, corporate
campus, or industrial park. CANs provide high-speed
Lab connectivity and centralised management of resources
College
across multiple locations.
Workstation
Library
Local Area Network (LAN): A Local Area Network (LAN)
connects computers within a small area, like a room, floor,
school, or office building. It can be wired with Ethernet or
optical fibre cables, or wireless using Bluetooth or Wi-Fi.
Server
Metropolitan Area Network (MAN): A Metropolitan Area Network (MAN) connects
computers within a city, such as branches of the same organisation. It is typically owned by
one entity, like a government body or large company. It spans a physical area larger than a
LAN but smaller than a WAN.
LAN LAN
Cyber Security 87

