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It connects large number of computers across a long geographical distance (in different cities or countries) or connect different LANs in a company.

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Some examples of connected devices of WAN are:

Routers

CSU/DSU

WAN switches

Core routers

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It covers a whole geographical area (typically a city).

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It connects a number of computers over short distances (usually in one building). These are the most common networks and can be found in many offices and installations

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It is the most basic type of network. It consists of a wireless modem. It is usually found in small offices or residences. It can also be used to communicate between personal devices to connect to a digital network and the Internet itself.

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Some examples of connected devices of LAN are:

Home Wi-Fi networks

Small business networks

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Some examples of connected devices of MAN are:

Campus Network

Healthcare Information System

Smart City Infrastructure Network

Government Communication Network.

Citywide Wi-Fi Network.

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LAN can be used:

At home of office you have to connect all your devices to your router using Ethernet cables, and configure your router's settings to enable LAN connectivity.

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Some examples of connected devices of PAN are:

Connection between a bluetooth earpiece and a smartphome.

Connection between a bluetooth speaker and a tablet.

Connection between a bluetooth printer and a computer.

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PAN can be used:

At home as laptops, tablets, printers, etc.

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WAN can be used:

In a university or campus setting, students might rely on WANs to access library databases or university research.

In a bank, including its branch offices and ATM machines

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MAN can be used:

At home and office as the local telephone company and your local cable TV company.