Computer Networking is a group of computers connected to eachother for the purpose of communication. Wavelink Communications specialises in Wireless and. Computer networks are made up of wired or wireless communication pathways that transmit data, voice and video traffic using protocols to organize traffic. Computer network, two or more computers that are connected with one another for the purpose of communicating data electronically. Besides physically.
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Computer network definition examples constitute computer networking. Types of networking There are two primary types of computer networking: Wired networking requires the use of a physical medium for transport between nodes.
Copper-based Ethernet cabling, popular due to its low cost and durability, is commonly used for digital communications in businesses and homes.
Alternatively, optical fiber computer network definition used to transport data over greater distances and at faster speeds, but it has several tradeoffs, including higher costs and more fragile components. Wireless networking uses radio waves to transport data over the air, enabling devices to be connected to a network without any cabling.
Computer network | Definition & Types |
The geometric arrangement of a computer system. Common topologies include a bus, starand ring. See the Network topology diagrams in the Quick Reference section of Webopedia.
The protocol defines a common set of rules and signals that computers on the computer network definition use to communicate. If an unknown destination is targeted, the switch broadcasts to all ports but the source. Switches normally have numerous ports, facilitating a star topology for devices, and cascading additional switches.
Routers[ edit ] A typical home or small office router showing the ADSL telephone computer network definition and Ethernet network cable connections A router is an internetworking device that forwards packets between networks by processing the routing information included in the packet or datagram Internet protocol information from layer 3.
The routing information is often processed in conjunction with the routing table or forwarding table. A router uses its routing table to determine where to forward packets.
Computer network - Wikipedia
A destination in a routing table can include a "null" interface, also known as the "black hole" interface computer network definition data can go into it, however, no further processing is done for said data, i.
Modems[ edit ] Modems MOdulator-DEModulator are used to connect network nodes via wire not originally designed for digital network traffic, or for wireless. To do this one or more carrier signals are modulated by the digital signal to produce an analog computer network definition that can be tailored to give the required properties for transmission.
Modems are commonly used for telephone lines, using a Digital Subscriber Line technology. Firewalls[ edit ] A computer network definition is a network device for controlling network security and access rules. Firewalls are typically configured to reject access requests from unrecognized sources while allowing actions from recognized ones.
The vital role firewalls play in network security grows in parallel computer network definition the constant increase in cyber attacks. Network structure[ edit ] Network topology is the layout or organizational hierarchy of interconnected nodes of a computer network.
What is a Computer Network? Webopedia Definition
Different network topologies can affect throughput, but reliability is often more critical. With many technologies, such as bus networks, a single failure can cause the network to fail entirely. In general the more interconnections there are, the more robust the network is; but computer network definition more expensive it is to install.
Common network topologies Common layouts are: