Page 12 - KEC Khaitan C8.1 Flipbook
P. 12
Modem is the short form of Modulator-Demodulator, where the modulator converts digital signals
to analog and the demodulator converts analog signals back into digital.
GATEWAY
A gateway is a network device that allows the data to flow between two different
networks that may use different protocols. It collects data that is to be sent from
one device, converts it into small packets and then sends them to another device.
21 st
Century #Leadership & Responsibility
Skills
“Network has proved to be a boon for the Like rivers flowing through
mankind. We should use it wisely and not landscapes, data on the internet
misuse it to spread false news, rumours, travels across networks in streams
or images that can disrupt the peaceful of information.
atmosphere around us.”
NETWORK TERMINOLOGIES
There are several terms related to computer network. Let us discuss some of them.
SERVER
A server is also called host computer. It controls the access to the hardware and software on the
network. It provides a centralised storage area for the programs, data and information.
The server that performs a specific task is called a dedicated server.
The server that manages the printers and documents being printed is called the print server.
The server that stores and provides the access to a database is called a database server.
The server that manages the network traffic is called a network server.
The server that delivers the requested web pages to our computer is called a web server.
CLIENT
It is a computer which depends on the server for specific resources. For example, a server might
store a network version of an Excel program. Every client on the network can access the Excel
program from the server.
INTERNET
Internet is a global network of millions of computers and computer networks all over the world.
It allows us to access and share information over the network. The Internet contains billions of
websites to provide information.
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