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Definition of "Bandwidth" |
Commonly defined as the difference between the upper and lower frequencies of the half power points of the response relative to the reference frequency. / The width of a communication channel, measured as frequency. The difference between the highest usable frequency of a device (upper frequency limit) and the lowest usable frequency of the device (lower frequency limit) - measured at the half-power points. The difference between the limiting frequencies within which performance of a device, in respect to some characteristic, falls within specified limits. The difference between the limiting frequencies of a continuous frequency band. The capacity of a telecom line to carry signals. The necessary bandwidth is the amount of spectrum required to transmit the signal without distortion or loss of information. / Bandwidth is a range of frequencies, or information, that a circuit can handle or the range of frequencies that a signal contains or occupies. / In computer networking and computer science, bandwidth, network bandwidth, data bandwidth, or digital bandwidth is a measurement of bit-rate of available or consumed data communication resources expressed in bits per second or multiples of it. / In computer networks, bandwidth is often used as a synonym for data transfer rate - the amount of data that can be carried from one point to another in a given time period (usually a second). This kind of bandwidth is usually expressed in bits (of data) per second (bps). Occasionally, it's expressed as bytes per second (Bps). A modem that works at 57,600 bps hastwice the bandwidth of a modem that works at 28,800 bps. In general, a link with a high bandwidth is one that may be able to carry enough information to sustain the succession of images in a video presentation. / Fault-tolerance or graceful degradation is the property that enables a system to continue operating properly in the event of the failure or one or more faults within of some of its components. If its operating quality decreases at all, the decrease is proportional to the severity of the failure, as compared to a naïvely-designed system in which even a small failure can cause total breakdown. Fault-tolerance is particularly sought-after in high-availability or life-critical systems. / (1) the frequency range of a message or information processing system measured in hertz. |
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