Page 43 - Computing Book 7

All About Cloud Class 7

LAN - Local Area Network is an interconnection of computers and
its related devices within a small geographical area or a building,
home, office, school, where the distance between the computers
is small.
Mostly the LANs are built to share vital resources such as printers
and exchanging files. LAN is also used in providing other services
such as sharing applications, games, files, accessing the Internet.
A speed of LAN is higher than WAN i.e. 1000 Mbps. Ownership of
this network is private and maintained by a single organization.

WAN - Wide Area Network is a computer network that covers
broad and large areas such as small towns and cities. The design
and maintenance are more difficult than LAN. Ownership of the
network can be private or public as well. WANs are very complex
to manage by private administrators and they usually have public
ownership.
WAN is a connection between multiple geographic locations
which is composed of multiple LAN’s. The best example of a WAN
is the Internet which connects many smaller LANs and MANs
through ISPs.
A speed of WAN is comparatively low than LAN i.e. 150 Mbps. It
ranges up to 10000 Km. WANs are more congested than LANs.
WANs have a lower data transfer rate compared to LANs.

4G Network:
4G is the fourth generation of broadband cellular network technology, succeeding 3G. Potential and
current applications include amended mobile web access, IP telephony, gaming services, high-
definition mobile TV, video conferencing, and 3D television.

5G Network:
5G is the 5th generation of mobile networks, a significant evolution of today’s 4G LTE networks. 5G
has been designed to meet the very large growth in data and connectivity of today’s modern society,
the Internet of things with billions of connected devices, and tomorrow’s innovations. 5G will initially
operate in conjunction with existing 4G networks before evolving to fully standalone networks in
subsequent releases and coverage expansions.

How the Internet Works:
1. You either type an address (URL) into your "Address Bar" or click on a hyperlink.
2. Your browser sends a request to your ISP server asking for the page. When the browser
sends a request to the ISP the following information is transferred from user PC:
• Web Page Request • User ID
• IP Address

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