Karteikarten
network topology
Karten in diesem Stapel (13)
- 1Computer NetworkA computer network can be described as two or more computers connected together through a communication media to form a computer network.
The purpose of connecting computers together in a network is to exchange information and data, also networked computers can use resources of other computers. - 2ServersThese are powerful computers that provide services to the other computers on the network.
- 3ClientsClients are computers that use the services that a server provides. Clients are always less powerful than the server within a network.
- 4Communication mediaThe communication media is the physical connection between the devices on a network. This could be through cable in an organisation’s local network, wireless signal or the internet
- 5Network AdapterThe network adapter or, as its often referred to, the network interface card (NIC), is a circuit board that is equipped with the components necessary for sending and receiving data.
- 6ResourcesThe term ‘resources’ refers to any peripheral device that is available to a client on the network such as printers, fax devices and other network devices; however, the term also refers to data and information
- 7UserA user is basically any person that uses a client to access resources on the network.
- 8ProtocolsThe protocols of a network are formal written rules used for the network communications. They are essentially the languages that computers use to communicate between each other on a network.
- 9Advantages of using a computer network1.Networks allow users to share software stored in a main system.
2.Site (network) software licences are less expensive than buying several standalone licences.
3.Files can easily be shared between users over a network.
4.Network users can communicate via email, instant messenger and VoIP .
5.Security over networks is of a high standard, i.e. users cannot see other users' files, unlike on stand-alone machines - 10Disadvantages of using a computer network1.The cost of purchasing cabling to construct a network as well as the file servers can be costly.
2.The management of a large network is complicated, which requires training and a specialist network manager usually needs to be employed.
3.In the event of a file server breaking down the files contained on the server become inaccessible, although email might still work if it is stored on a separate email server. The computers can still be used but are isolated.
4.If a virus gets into the system through a network it can easily spread to other computers.
5.With networks, there is a risk of hacking, particularly with wide area networks. Stringent security measures are required to prevent such abuse, such as a firewall. - 11Advantage of bus topologyIt is easy and reasonably cheap to install as a consequence of requiring only a small quantity of cable.
- 12Disadvantages of bus topology1.As the cable length is limited. This restricts the number of devices that can be connected to the network.
2.This network topology performs well only for a limited number of computers because as more devices are connected the performance of the network becomes slower as a consequence of data collisions. - 13Advantage of using ring topologyMessages being sent between two workstations pass through all the intermediate devices resulting in a central server not being required for the management of this topology.
Informationen
- Beschreibung
- Karteikarten am network topology, erstellt von Hi Hi am 24/11/2017.
- Erstellt von
- Hi Hi
- Aufrufe
- 0
- Bewertung