Question

_____ is restricted to a small geographical area, usually to a relatively small number of stations.
1. Metropolitan Area Network (MAN)
2. Internet
3. Local Area Network (LAN)
4. Wide Area Network (WAN)

Answer 1

Correct Answer - Option 3 : Local Area Network (LAN)

The correct answer is Local Area Network (LAN).

• Local Area Network (LAN) is restricted to a small geographical area, usually to a relatively small number of stations.
  • Local Area Network (LAN) covers a smaller geographical area (Size is limited to a few kilometres) and is privately owned.
  • It can be can used for an office building, home, hospital, schools, etc.
  • LAN is easy to design and maintain.
  • It covers a short distance, and so the error and noise are minimized.
  • It connects network devices in such a way that personal computers and workstations can share data, tools, and programs.
  • The group of computers and devices are connected by a switch, or stack of switches, using a private addressing scheme as defined by the TCP/IP protocol.
  • Routers are found at the boundary of a LAN, connecting them to the larger WAN.

• Wide Area Network (WAN)
  • It is a computer network that extends over a large geographical area, although it might be confined within the bounds of a state or country. 
  • A WAN could be a connection of LAN connecting to other LANs via telephone lines.
• Metropolitan Area Network (MAN)
  • It covers a larger area than that of a LAN and a smaller area as compared to WAN.
  • It connects two or more computers that are apart but reside in the same or different cities.
  • It’s hard to design and maintain a Metropolitan Area Network.
  • The fault tolerance of a MAN is less and also there is more congestion in the network.
• Personal Area Network:
  • It is a computer network that enables communication between computer devices near a person.
  • PANs can be wired, such as USB or FireWire, or they can be wireless, such as infrared, ZigBee, Bluetooth and ultrawideband, or UWB.
  • The range of a PAN typically is a few meters.
• Internet 
  • It is a worldwide/global system of interconnected computer networks.
  • It is a vast network that connects computers all over the world.
  • Through the Internet, people can share information and communicate from anywhere with an Internet connection.
  • It uses the standard Internet Protocol (TCP/IP).
  • Every computer on the Internet is identified by a unique IP address.
    • IP Address is a unique set of numbers (such as 110.22.33.114) that identifies a computer’s location.
  • Internet is accessible to every user all over the world.
  • The Internet works through a series of networks that connect devices around the world through telephone lines.
  • Users are provided access to the Internet by Internet service providers.
  • The widespread use of mobile broadband and Wi-Fi in the 21st century has allowed this connection to be wireless.
•   The World Wide Web, commonly referred to as WWW, W3, or the Web is an interconnected system of public webpages accessible through the Internet.
  • The Web is not the same as the Internet: the Web is one of many applications built on top of the Internet.