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Router
It is a networking device used to connect and facilitate the transfer of
data in the form of packets between two networks. It finds the best
route for data packets over the network. It is located at the gateway
where two networks connect.
Modem
It stands for MODULATOR–DEMODULATOR. It is a hardware device that allows a
computer to send and receive data over a telephone line. It converts data from
digital to analog and vice versa. The process of converting digital signals to analog
signals is called modulation. The process of converting analog signals to digital
signals is called demodulation.
Networking Cable
It is also known as ethernet cable, is a transmission medium that allows
you to transport information from one computer to another. There are
various types of networking cables, such as coaxial cables, twisted pair
cables, and optical fiber cables.
Gateway
It is a network device that allows data to flow between two different
networks, which may use different protocols. It collects data that is
to be sent from one computer, converts it into small packets, and
then sends them to another computer.
TYPES OF NETWORKS
Different types of networks can be classified on the basis of the geographical areas they cover.
There are five types of networks as follows:
LAN (Local Area Network)
LAN is a digital communication system that interconnects
a large number of computers and other 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 LAN, users can exchange data and messages in
an easy and quick way. Cables 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 that usually span several buildings in the same city or town.
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