Computer Science, asked by ayushsingh12327, 1 year ago

What is networking .define it's types and different type of computer viruses

Answers

Answered by MacintoshTavish

A computer network is a set of computers connected together for the purpose of sharing resources. The most common resource shared today is connection to the Internet. Other shared resources can include a printer or a file server. The Internet itself can be considered a computer network.

Computer Network Defined

A computer network is a set of connected computers. Computers on a network are called nodes. The connection between computers can be done via cabling, most commonly the Ethernet cable, or wirelessly through radio waves. Connected computers can share resources, like access to the Internet, printers, file servers, and others. A network is a multipurpose connection, which allows a single computer to do more.

Types of Network Connections

Computer networks can be broken down historically into topologies, which is a technique of connecting computers. The most common topology today is acollapsed ring. This is due to the success of a network protocol called the Ethernet. This protocol, or network language, supports the Internet, Local Area Networks, and Wide Area Networks.

Star Topology

A star topology is a design of a network where a central node extends a cable to each computer on the network. On a star network, computers are connected independently to the center of the network. If a cable is broken, the other computers can operate without problems. A star topology requires a lot of cabling.

Bus Topology

A bus topology is another type of design where a single cable connects all computers and the information intended for the last node on the network must run through each connected computer. If a cable is broken, all computers connected down the line cannot reach the network. The benefit of a bus topology is a minimal use of cabling.

Ring Topology

A similar topology is called a ring. In this design, computers are connected via a single cable, but the end nodes also are connected to each other. In this design, the signal circulates through the network until it finds the intended recipient. If a network node is not configured properly, or it is down temporarily for another reason, the signal will make a number of attempts to find its destination.

A collapsed ring is a topology where the central node is a network device called a hub, a router, or a switch. This device runs a ring topology internally and features plugins for cables. Next, each computer has an independent cable, which plugs into the device. Most modern offices have a cabling closet, or a space containing a switch device that connects the network. All computers in the office connect to the cabling closet and the switch. Even if a network plug is near a desk, the plug is connected via a cable to the cabling closet.

Answered by Anonymous

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.

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.