Discuss the various types of networks. compare with each other.
Answers
There are different types of Networks such as point to point, broadcast, multicast, unicast. Apart from this, networks can be broadly classified as PAN, LAN, MAN, WAN, Wireless Networks, Home Networks, Intranetworks and Internetworks.
Local Area Networks (LAN)
These are privately-owned networks within a single building or campus of up to a few kilometer in size.
They are widely used to connect personal computers and workstations in company offices and factories to share resources (e.g., printers) and exchange information.
LANs are distinguished from other kinds of networks by three characteristics:
(1) their size (2) their transmission technology and (3) their topology.
LANs are restricted in size.
LANs may use a transmission technology consisting of a cable to which all the machines are attached, like the telephone company party lines once used in rural areas. Traditional LANs run at speeds of 10 Mbps to 100 Mbps, have low delay (microseconds or nanoseconds), and make very few errors. Newer LANs operate at up to 10 Gbps.
Various topologies are possible for broadcast LANs.
Metropolitan Area Networks (MAN)
A metropolitan area network, or MAN, covers a city.
Example of a MAN: The cable television network available in many cities.
Cable television is not the only MAN. Recent developments in high-speed wireless Internet access resulted in another MAN, which has been standardized as IEEE 802.16.
Wide Area Networks (WAN)
A wide area network, or WAN, spans a large geographical area, often a country or continent. It contains a collection of machines intended for running user (i.e., application) programs.
The hosts are owned by the customers (e.g., people's personal computers), whereas the communication subnet is typically owned and operated by a telephone company or Internet service provider. The job of the subnet is to carry messages from host to host, just as the telephone system carries words from speaker to listener.
Wireless Networks
Wireless networks can be divided into three main categories:
System interconnection.
Wireless LANs.
Wireless WANs.
Home Networks
The fundamental idea is that in the future most homes will be set up for networking. Every device in the home will be capable of communicating with every other device, and all of them will be accessible over the Internet.
Many networks exist in the world, often with different hardware and software. People connected to one network often want to communicate with people attached to a different one. The fulfillment of this desire requires that different, and frequently incompatible networks, be connected, sometimes by means of machines called gateways to make the connection and provide the necessary translation, both in terms of hardware and software. A collection of interconnected networks is called an internetwork or internet.
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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.