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Wide Area Network (WAN): A WAN spans a larger geographical area, often connecting
LANs across cities, countries, or continents. The Internet is the largest WAN, enabling global
connectivity and communication.
LAN LAN LAN LAN
LAN LAN
WHAT IS INTERNET?
The Internet has become an essential way for people to communicate, even in remote areas. It
is a global network that connects computers to share information. The Internet is a system of
networks, that link billions of computers, smartphones, and other smart devices by using either
wired or wireless communication medium. Anyone can access it from anywhere in the world.
Boost Bits
In 1969, the Internet was
designed by the Advanced
Research Projects Agency (ARPA)
of the US Department of Defense
and was known as ARPANet
(Advanced Research Projects
Agency Network).
Applications of the Internet
The Internet has become an important part of our lives. It plays a very important role in shaping
how we live, work, and interact in the digital age. Some of the important applications of Internet
are as follows:
Communication: One major change the Internet has
brought is how we communicate with each other. Email,
instant messaging, video conferencing, and voice call
are some popular methods of communication over the
Internet.
88 Information Technology (V5.0)-VII

