backpressure
(bak´presh-&r) (n.) Also referred to as backpressure flow control, a condition wherein a switch causes a transmitting device to hold off on sending data packets until the switch��s bottleneck has been eliminated (i.e., when its buffers holding data have been emptied). In order to create backpressure, the switch either broadcasts false collision detection signals or sends packets back to the originating device if the buffer is full.
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A microprocessor bus that connects the CPU to a Level 2 cache. Typically, a backside bus runs at a faster clock speed than the frontside bus that connects the CPU to main memory. For example, the Pentium Pro microprocessor actually consists of two chips — one contains the CPU and the primary cache, and the […]
- backsourcing
The process of bringing IT operations back in-house after they have been outsourced as the outsourcing contracts expire or are terminated.
- backspace
A character that causes the cursor to move backward one character space, possibly deleting the preceding character. The backspace character has an ASCII value of 8. Most keyboards have a Backspace key that invokes this character. When inserted in a file, the character causes a printer or other device to move backward one space.
- Backup
(v.) In computing the phrase backup means to copy files to a second medium (a disk or tape) as a precaution in case the first medium fails. One of the cardinal rules in using computers is back up your files regularly. Even the most reliable computer is apt to break down eventually. Many professionals recommend […]
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In data restoration, the backup window is a predetermined amount of time in which specific data must be restored to avoid any negative or damaging effects on the systems or applications that use the data.