Flashcards
Networks
Flashcards do conjunto (13)
- 1what is a computer network?two or more computers connected together to share information
- 2describe a LANit is a local area network. Each device is a node. A LAN is installed on the site.
relatively small, it is owned by a organization - 3describe a WANcover a large geographical area. use cables, telephone lines, satellite and radio waves to cannot.
- 4what are the advantages of a computer network?printers and scanners can be shared. The whole network can be backed up centrally. messages can sent between users, users can share files which prevent duplication of information.
- 5What are the disadvantages of a computer network?a trained person is needed to manage the network. writing can be expensive to buy and install sercurity is an issue as a virus can affect all computers.
- 6What devices are needed to produce a LAN?rooter, switch, computers, hardware , hub.
- 7What is the purpose of a NIC?The NICs convert the data signals from the nodes into data signals that can be transferred across the network.
- 8what is the purpose of a router?Routers work by sending data between networks (e.g. over the internet.)
- 9what is the purpose of a hub?A device that connects
nodes together.
Not intelligent – data
is sent to all nodes
across the whole of the
network.
Cheap devices – USB hubs
useful in home computer
installations. - 10what is the purpose of a switch?A device that connects nodes together.
An intelligent device that can sends data to the nodes that the data is intended for.
This reduces network traffic because making the network run faster. - 11what is a purpose of a WAP?Wireless Application Protocol, a set of protocols enabling mobile phones and other radio devices to be connected to the Internet
- 12what is the different between a hub and a switch?Not intelligent – data
is sent to all nodes
across the whole of the
network. An intelligent device that can sends data to the nodes that the data is intended for - 13What is the Internet?
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- FlashCards sobre Networks, criado por Alyan Basharat em 01-12-2017.
- Criado por
- Alyan Basharat
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