RIS
Short for Remote Installation Service, a feature of Microsoft’s Windows 2000 Server. RIS allows a network administrator to install the Windows 2000 operating system to any number of client computers simultaneously from a central location. The administrator places images, or versions, of built systems onto a central server and then downloads those images to a computer with an empty hard disk. RIS also allows administrators to implement upgrades in the same simultaneous fashion.
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- RISC
Pronounced risk, acronym for reduced instruction set computer, a type of microprocessor that recognizes a relatively limited number of instructions. Until the mid-1980s, the tendency among computer manufacturers was to build increasingly complex CPUs that had ever-larger sets of instructions. At that time, however, a number of computer manufacturers decided to reverse this trend by […]
- RJ-11
Short for Registered Jack-11, a four- or six-wire connector used primarily to connect telephone equipment in the United States. RJ-11 connectors are also used to connect some types of local-area networks (LANs), although RJ-45 connectors are more common.
- RJ-45
Short for Registered Jack-45, an eight-wire connector used commonly to connect computers onto a local-area networks (LAN), especially Ethernets. RJ-45 connectors look similar to the ubiquitous RJ-11 connectorsused for connecting telephone equipment, but they are somewhat wider.
- RLC
Short for Run-Length Coding, a standard coding technique for image or video compression. See run-length encoding (RLE).
- RLE (run-length encoding)
The file extension for graphics that have been reduced using run-length encoding. RLE is a compression method that converts consecutive identical characters into a code consisting of the character and the number marking the length of the run. The longer the run, the greater the compression. It works best with black-and-white or cartoon-style graphics, and […]