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Concentrator

A computer that consolidates the signals from any slower speed transmission lines into a single, faster line or performs the reverse function. See repeater.


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The term “computer forensics” was coined in 1991 in the first training session held by the International Association of Computer Specialists (IACIS) in Portland, Oregon. Since then, computer forensics has become a popular topic in computer security circles and in the legal community. Like any other forensic science, computer forensics deals with the application of law to a science. In this case, the science involved is computer science and some refer to it as Forensic Computer Science. Computer forensics has also been described as the autopsy of a computer hard disk drive because specialized software tools and techniques are required to analyze the various levels at which computer data is stored after the fact. Computer forensics deals with the preservation, identification, extraction, and documentation of computer evidence. The field is relatively new to the private sector, but it has been the mainstay of technologyrelated investigations and intelligence gathering in law enforcement and military agencies since the mid1980s. Like any other forensic science, computer forensics involves the use of sophisticated technology tools and procedures that must be followed to guarantee the accuracy of the preservation of evidence and the accuracy of results concerning computer evidence processing. Typically, computer forensic tools exist in the form of computer software.
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A technique that maximizes processing speed through the temporary use of highspeed storage devices. Input files are transferred from slower, permanent storage and queued in the highspeed devices to await processing, or output files are queued in highspeed devices to await transfer to slower storage devices.
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A piece of equipment that joins a digital phone line to a piece of communication equipment, which may be a phone or a PC. Such equipment allows testing, condition, timing, interfacing, etc. However, it does not do what a modem does: namely, convert digital signals from machines into analog signals which can be carried on analog phone lines. The term “digital modem” is thus somewhat of a misnomer.
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Occurs when information is traveling on the Internet over a very fast line for a certain distance and then comes near the user where it must travel over a slower line.
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A communication medium that supports only a single communication signal at a time. A form of modulation in which data signals are pulsed directly on the transmission medium without frequency division and usually utilize a transceiver. In baseband, the entire bandwidth of the transmission medium (cable) is utilized for a single channel. It uses a single carrier
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