Network Hardware
- various types of hardware are to create a computer network, to connect multiple networks together, to connect a computer or network to the Internet.
- there are 7 types of hardware.
- Network Interface Card (NIC) - an expansion card through which a computer can connect to a network. Provides the physical connection between the network & computer workstation. Major factor in determining the speed & performance of a network.
- Repeater - are devices that amplify signals along a network. Are available for both wired & wireless networks, repeaters for a wired & wireless network are often called range extenders. Are extend the length of transmission media.
- Switch - a device used to connect multiple devices on a single (typically wired) network, forwards packets to only the intended recipient. Contains ports to which the devices on the network connect (typically via networking cables) & facilitates communications between devices. Identifies which devices connected to the switch is the one the data is intended for & send the data only to that device, rather than sending data out to all connected devices.
- Bridges - allows the computer on the individual network/separate parts of a network to exchange information. Advice used to bridge / connect two LANs. Most common often used to connect wired devices wireless to a network. Can only transfer information from one network to another. Also used to split on overloaded network into smaller parts.
- Routers - connect multiple devices to a cellular network. can direct/route information to the correct destination. Automatically detect if a part of the network is not working/slow. Contain fast processors to help prevent network slowdown. Prevent looping problems by analysis the information the transfer 7 directing it to the proper destination. Are often used to connect LAN to a WAN. Can also be used to break up the WAN into segment.
- Hubs / Concentrator - a type of multiplex that combines multiple messages & sends them via a single transmission medium in such a way that all the individual messages are simultaneously active, instead of being sent as a single combined message. The main function is to connect the wires in the network. Help to eliminate errors on the network that are caused by electrical interference.
- Workstation - a special computer designed for technical applications. Intended primarily to be used by one person at a time. Are commonly connected to a LAN & run multi-user operating system.
- File server - a computer attached to a network that has the primary purpose of providing a location for shared disk access, shared storage of computer files such as documents, photographs, movie, etc, that can be access by the workstation are attached to the same computer network.
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