5663979
Description
Flashcards by Leann McLeod, updated more than 1 year ago
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Created by Leann McLeod
over 9 years ago
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| Question | Answer |
| Network | a collection of computer and other hardware that has been connected together in order to allow the communication and sharing of resources |
| Packet | a collection of data that is transmitted over a packet-switched network |
| Router | a device that allows communication between a LAN and the Internet. This is the device by which one can access the internet. |
| Hub | a device which lots of computer can be connected, usually with Ethernet cables. It allows computers connected to it to communicate with one another. |
| Switch | a device which performs the same function as the hub but it learns the locations of the computer and other devices plugged into it, making the network more efficient. |
| Network Interface Card (NIC) | a device that each computer that is to be added to a network must have. This is where the Ethernet cable would be plugged in, or where the wireless signal would be received. |
| Protocol | an agreed-upon format which allows two devices to communicate |
| Protocol Stack | when a programmer takes the rules of a protocol and implements them when creating a program |
| LAN | (Local Area Network) a network in which the computer systems are all located relatively close to each other e.g. the same building |
| WAN | (Wide Area Network) a network in which the computer systems are all located relatively distant from each other e.g. all over a country, different countries |
| Network Topology | the theoretical layout of computer systems on a network |
| Encryption | the conversion of data, using an algorithm, into a form called cyphertext that cannot be easily understood by people without the decryption key |
| Backup | the process of copying data (usually onto a secondary storage medium) so that it can be preserved and restored if the original data is lost |
| Archiving | the process of storing data which is no longer in current or frequent use |
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