Flashcards
Computing Definitions
Flashcards do conjunto (47)
- 1Five State Processing modelA model that shows the possible states of a program on a multitasking system.
- 2Frequency Division MultiplexingSending more than one signal down a single connection by using a number of different carrier waves.
- 3FTPFile transfer protocol, a method by which files can be transferred from a remote computer to a local computer.
- 4Full DuplexA transmission that can send data in two directions simultaneously.
- 5Fully IndexedA file where every record has an entry in the index.
- 6GatewayA device that connects one network with another.
- 7Half DuplexA transmission that can send data in two directions but not simultaneously.
- 8High-level SchedulerPart of the OS that determines the order in which jobs will be started.
- 9HTMLHyper Text Mark-up Language. The language used to describe a web page layout.
- 10HTTPThe protocol used to request and send WEB pages.
- 11ICANNOne of the controlling bodies for the internet.
- 12InteruptsA hardware signal that stops the processing temporarily whilst an urgent task is dealt with.
- 13IntranetThe use of internet technology within a network whose access is limited to a single company or organisation.
- 14IP AddressThe unique 32 bit value used to identify a machine on the internet.
- 15ISPInternet service provider is a company that provides individuals and other companies access to the internet.
- 16Logical DeviceThe way in which a device is referred to. it may or may not match the physical hardware. For example one physical disk can be partitioned to appear as several disks.
- 17Low-Level schedulerPart of the OS that is responsible for allocation of time slices in a multitasking system.
- 18Main StoreRAM + ROM
- 19MetaTagsKey words added to an HTML to summarise its contents.
- 20ModemAny device that converts binary data into another form, using modulation, for transmission.
- 21ModulationVarying a carrier wave in some way in order to represent binary data. Eg changing amplitude or frequency.
- 22MultiplexingThe sending of several data channels down the same connection.
- 23Network Switch/BridgeComputer networking device that connects devices together on a computer network by using packet switching to receive, process and forward data to a destination device.
- 24NewsgroupsOrganised by topics newsgroups allow public messages to be written and read.
- 25Packet SwitchingA system where data packets are individually navigated through a network.
- 26PagingThe dividing of memory into blocks for management purposes.
- 27Parallel TransmissionAny transmission system that sends a number of bits at the same time.
- 28ProtocolsThe agreement between two devices about how data will be transferred.
- 29Record LockingRestricting access to a record whilst being updated.
- 30Round RobinIn a multitasking system a method where each task is given an equal amount of processing time.
- 31Run Time MethodsIn a multitasking system a method where each task is given processing time until it cannot use it.
- 32Scripting LanguageA language embedded into a web page to allow some data manipulation.
- 33Search EngineDevice that indexes the world wide web to allow the web to be searched.
- 34SecurityThe process of protecting data from unauthorised access or damage.
- 35Serial TransmissionAny transmission system where only one bit is sent at a time.
- 36Server side programmingThe software that runs on a server to produce a WEB page in response to a custom user request. It may include technologies such as CGI, Servlets, SQL, ASP.
- 37S-HTTPSecure encrypted HTTP.
- 38SimplexData transmission that allows data to flow in only one direction.
- 39SwappingThe process of exchanging the contents of two storage locations.
- 40Time division multiplexingSending multiple sets of data down a single line by switching rapidly from one to the next.
- 41Token NetworksA LAN where a device must receive a permission to send (token) before data can be sent.
- 42URLUniform/Universal Resource Locator. A standard way of representing addresses on the internet.
- 43User IdentificationAny system used to verify who the user is eg username plus password.
- 44Variable PartitioningDividing the memory into blocks that are not all the same size.
- 45Virtual Memory (Virtual Storage)Temporary transfer of part of the main storage (RAM) onto hard discs to free space in RAM. The contents are then brought back when needed.
- 46WWWWorld Wide Web. The collection of hyperlinked documents stored on web servers.
- 47XMLExtensible Markup Language. A language that uses tags to describe data or a data structure.
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- A-Level Computing FlashCards sobre Computing Definitions, criado por elliot9678 em 04-04-2016.
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- elliot9678
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