Flashcards
Networks
Flashcards do conjunto (21)
- 1What is a hub?A hub is a a device that connects two or more computers together.It has no intelligence of where to send information.Data is sent to all nodes across the whole of the network.
- 2What is a router?A router tells the data where to go ,routers work by sending data between networks.A router must be connected to at least two networks or it will have nothing to route.
- 3What is a WAN?A WAN is a wide area network.It covers a large geographical area and it uses cables,telephone lines,satellites,and radio waves to connect .E.g International banking system and ATM machines.The internet.
- 4What is a network interface ?A network interface is a circuit board or card that is installed in a computer so that it can be connected to a network.
- 5What is a wireless access point?(WAP)A wireless access point is a device that allows people to connect devices on a wireless LAN to a wire based network.
- 6What is a switch?A switch is a intelligent computer networking device and it connects at least two devices together on a computer network by using packet switching.Also it can send data to the nodes (two or more computers)that the data is intended for.
- 7What is a LAN?A LAN is a local area network .It is a connected set of computers and other devices.Each device is called a node.E.g computer printer.A LAN is installed on one site relatively small and it is owned by the organisation.
- 8StarFastest performance possible.
Uses the most cables which makes it most expensive.
Each device has its own cable which leads to a switch or hub. - 9RingNot affected by heavy traffic.
All nodes must be switched on. One cable failure will lead to a whole network failure.
One device is connected to two other devices to form a ring. All data is sent the same way. - 10BusThe simplest and cheapest to install.
If the main bus fails the whole network fails.
In a bus network everything is connected to the bus cable. - 11wwwThe world wide web is a collection of webpages found on a network of computers.
- 12What is a Internet?The internet is a huge network of computers all connected together.
- 13Internet service provider(ISP)A company that provides people with access to the internet.
- 14What is a modem?A modem turns digital data into analogue data and analogue data into digital data ,so data can be transferred across telephone lines .
- 15What is a IP address?An internet address is called an IP(internet Protocol)address,and it is a series of numbers separated by dots like this:
172.217.6.35. - 16What are URLs?URLs are usually made up of of these parts
.World wide web (WWW)
An organisation name(bbc)
A top level domain(.co.)
A country(UK) - 17What does HTTP stand for?Hyper text protocol transfer
- 18What is Encryption?Encryption is the process of converting information or data into a code, especially to prevent unauthorised access
- 19What devices are used to produce a LAN?A LAN would require a network switch/a router,a broadband connection, a computer and an ether net cable(plus extras to connect other computers.
- 20DecryptionDecryption is the process of taking encrypted text or other data and converting it back into text that you or the computer can read and understand.
- 21—
Informações
- Descrição
- FlashCards sobre Networks, criado por Lois Ambler em 04-10-2017.
- Criado por
- Lois Ambler · out 2017
- Atualizado
- 23 nov 2017
- Visualizações
- 2
- Avaliação