Question

Explain types of network

Answer 1

Different types of (private) networks are distinguished based on their size (in terms of the number of machines), their data transfer speed, and their reach. 
Private networks are networks that belong to a single organization. 

There are usually said to be three categories of networks:

LAN (local area network)MAN (metropolitan area network)WAN (wide area network)

There are two other types of networks:

TANs (Tiny Area Network), which are the same as LANs but smaller (2 to 3 machines),and CANs (Campus Area Networks), which are the same as MANs (with bandwidth limited between each of the network's LANs).
LAN

LAN stands for Local Area Network. 
It's a group of computers which all belong to the same organization, and which are linked within a small geographic area using a network, and often the same technology (the most widespread being Ethernet). 

A local area network is a network in its simplest form. Data transfer speeds over a local area network can reach up to 10 Mbps (such as for an Ethernet network) and 1 Gbps (as with FDDIor Gigabit Ethernet). 
A local area network can reach as many as 100, or even 1000, users. 

By expanding the definition of a LAN to the services that it provides, two different operating modes can be defined:

In a "peer-to-peer" network, in which communication is carried out from one computer to another, without a central computer, and where each computer has the same role.in a "client/server" environment, in which a central computer provides network services to users.
MANs

MANs (Metropolitan Area Networks) connect multiple geographically nearby LANs to one another (over an area of up to a few dozen kilometres) at high speeds. Thus, a MAN lets two remote nodes communicate as if they were part of the same local area network. 

A MAN is made from switches or routers connected to one another with high-speed links (usually fibre optic cables). 

WANs

A WAN (Wide Area Network or extended network) connects multiple LANs to one another over great geographic distances. 

The speed available on a WAN varies depending on the cost of the connections (which increases with distance) and may be low.

Answer 2

Computer network

In basic terms, computer network is a type of network that allows computers to communicate with other computers via medium. There are mainly 3 types of network: WAN , LAN and MAN. A computer network is set of various computers which are connected for sharing and transferring purposes.

Computer network is a digital communication system which helps our computer to connect different nodes. If we are connected to any network, then we are connected to internet. And, we know that, Everything can be done if we are connected to internet.

WAN - Wide Area Network

Wide area network is provided for large geographical areas like schools, offices, colleges and institutions. WAN is established with the least telecommunication circuits. WAN is used to transmit data and information at large distance.

• Most of the private WAN networks uses 24 Bit block for communication service.

• Circuit-switched telephone lines, radio wave transmission, and optical fiber are some of the technologies used in Wide Area Network.

• WAN provides us High speed internet upto 400 gigabit. AT&T has successfully launched their broadband WAN service to provide high speed internet.

LAN - Local Area Network

Local Area Network interconnects the computers at small geographical area such as schools and colleges. Ethernet and Wi-Fi are the two common technologies used in Land Area Network. In this type of network, Cabling is a common technology that is used for interconnecting two different computers.

• Local Area Network was created in 1960 by the students of university.

• LAN provides high speed internet using Ethernet cables. Ethernet cables data is later converted in wireless network using routers.

• Wireless media is a common thing nowadays. Today, every smartphone, tablet and desktop have built in wifi connection, which helps to use internet without Ethernet cables wireless.

• NetBEUI, IPX/SPX, AppleTalk  are the protocols used in Local Area network for data communication.

MAN - Metropolitan Area Network

MAN is a type of network that covers very high Geographical areas like districts, towns and villages. The MAN network is transmitted through the tower in the form of waves, when this waves enters in our smartphone, they are later interrupted by our smartphone and hence we can use it.

• Metropolitan Area Network is also called as Wide Area Network (WAN)

• MAN network is used since 1994 for data communications.

• This network is provided from ISP to city and from towers, this network is later converted into waves.

• Business, education and government entities uses Metropolitan Area Network.