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Jargon Buster
The du Pré Jargon Buster found the following for - FNos A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
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Term
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Explanation
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| FAQ | Frequently Asked Questions | |
| FAST | Federation Against Software Theft. A powerful world-wide organisation, set up in 1984 by the British Computer Society’s Copyright Committee to prevent software piracy and unlicensed use – www.fast.org.uk | |
| Fast Ethernet | A 100Mbit/s technology based on the 10base-T Ethernet CSMA/CD network access method | |
| Fast Packet Switching | A term used to describe a generic mode of packet switching in hardware at layers 1 or 2 of the OSI seven layer model, in order to achieve high speed and low delay across a network | |
| FCS | A Frame Relay term. Frame Check Sequence. Standard 16-bit CRC used for frame relay frames (and others). The FCS detects bit errors occurring in the bits of the frame between the opening flag and the FCS | |
| FDD | Floppy Disk Drive. Usually for 3½” floppy disks. Early PCs used 5¼” | |
| FDDI | Fibre Distributed Data Interface. A high speed LAN standard employing token passing on dual 100Mbit/s fibre optic rings, although the standard can now be run on lower cost UTP cable | |
| FDM | Frequency Division Multiplexing. Originally used in telephony until replaced by PCM | |
| FeatureLine | A facility provided by BT, where a PSTN exchange line or ISDN channel is made to operate as if it was an extension of an in-house telephone system. Note that there is no CLI or CTI capability, and only operates on BT System X and System Y exchanges | |
| FeatureLine Local Link | FeatureLine Local Link replaces the original BT Speech Line offerings. A maximum of five sites can be cabled within the one local area, and placed in one Business Group | |
| FeatureNet | A large variant of BT's FeatureLine, operating from BT DMS100 exchanges. FeatureNet 1000 offers connection to telephone systems and telephones, whilst FeatureNet 5000 offers connection to telephones, only | |
| FeatureNet 1000 | see FeatureLine | |
| FeatureNet 5000 | see FeatureLine | |
| FeatureNet Embark | A Virtual Private Circuit (VPN) using BT's PSTN infrastructure, enabling the client to enjoy company wide call discounts on BT’s PSTN call charges. The PSTN line is either ceased and a Centrex see Access Line set up, or if the client is currently using see FeatureLine, it is simply an upgrade. FeatureNet works with most telephone systems, although Embark can work in the same way as FeatureLine. Predominantly linked with One Bill providing a simplified invoice process across the whole organisation. Specifically useful for clients with a national distribution of large and small sites | |
| FECN | A Frame Relay term. Forward Explicit Congestion Notification. A bit sent by a frame relay network to notify a CPE that congestion has been encountered by traffic sent to the transmitting device and that congestion reduction procedures should be instigated | |
| FED | Field Emission Display. A technology which could replace LCD | |
| Fibre Optic | see Optic Fibre | |
| File Server | Also known as a server, this is a computer which supplies services to other computers on the network | |
| Filter | A filter is a program or section of code that is designed to examine each input or output request for certain qualifying criteria and then process or forward it accordingly. | |
| Firewall | A piece of hardware or software which restricts access to and from one computer network to another | |
| Firewall Denial Of Service | The firewall is specifically subjected to a Denial Of Service Attack. | |
| Flow Control | A technique whereby control signals or characters are used to enable or disable the flow of data to DCE equipment. Hardware flow control (‘out of band’) using RTS/CTS lines etc, or Software flow control (‘in band’) using XON/XOFF characters etc | |
| FM | Frequency Modulation. A term often relating to radio transmission | |
| Forklift Upgrade | Where upgrading is not in fact extending the existing system, but removing it and replacing it with another | |
| Format | Format has more than one meaning. First, it refers to the process of ‘initialising’ a floppy disk so that it can be used to store data. Second, format refers to the way information is stored and structured inside a file. Different sorts of programs store information in different formats | |
| FRAD | A Frame Relay term. Frame Relay Assembler Disassembler. Device used to gateway between the frame relay network and a users local network. Often FRADs are used for a single host – see X.25 PAD | |
| Frame | i) A group of bits exchanged between data link layer entities, that contain its own control information for addressing and error checking in addition to user data. As used in HDLC ii) The repeating sequence of time slots in a time division multiplex |
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| Frame Relay | A service designed for cost-effective transmission of data, and theoretically voice, for intermittent traffic between LANs, and between end-points on a WAN. Frame Relay puts data in a variable size unit called a Frame and leaves any necessary error correction (and subsequent re-transmission of data) up to the equipment at the end points. In so doing, transmission is fast | |
| FRBS | A Frame Relay term. Frame Relay Bearer Service. The collection of frame relay devices and network that ultimately provide a network connection for a user host | |
| FRF | A Frame Relay term. Frame Relay Forum. Multi-manufacturer based body concerned with the standardisation of frame relay procedures and specifications | |
| FTP | i) Foil screened twisted pair cable ii) An Internet term. File Transfer Protocol. The simplest way to exchange files between computers on the Internet. Like the Hypertext Transfer Protocol (HTTP), which transfers displayable Web pages and related files, and the Simple Mail Transfer Protocol (SMTP), which transfers e-mail, FTP is an application protocol that uses the Internet's TCP/IP protocols. |
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| Full Duplex | A channel capable of transmitting data in both directions at the same time. Typically, a voice telephone line | |
| Full Duplex Ethernet | A new proposal for Ethernet on a structured cabling solution. Structured cabling enables point to point connectivity, therefore, it is possible to enable transmission and reception of signals to occur simultaneously, thus doubling the available bandwidth to 20Mbit/s |