Short for Complementary Code Keying, a set of 64 eight-bit code words used to encode data for 5.5 and 11Mbps data rates in the 2.4GHz band of 802.11b wireless networking. The code words have unique mathematical properties that allow them to be correctly distinguished from one another by a receiver even in the presence of substantial noise and multipath interference.
CCK works only in conjunction with the DSSS technology that is specified in the original 802.11 standard. It does not work with FHSS. CCK applies sophisticated mathematical formulas to the DSSS codes, permitting the codes to represent a greater volume of information per clock cycle. The transmitter can then send multiple bits of information with each DSSS code, enough to make possible the 11Mbps of data rather than the 2Mbps in the original standard.
Acronym for Cisco Certified Network Associate indicates a foundation in and apprentice knowledge of networking. CCNA certified professionals can install, configure, and operate LAN, WAN, and dial access services for small networks (100 nodes or fewer), including but not limited to use of these protocols: IP, IGRP, Serial, Frame Relay, IP RIP, VLANs, RIP, Ethernet, […]
Short for Call Control eXtensible Markup Language, CCXML is an XML-based language designed to provide telephony call control support for VoiceXML and other dialogue systems. CCXML can control the setup, monitoring and tear-down of phone calls. CCXML can provide a complete telephony service application, comprised of Web server CGI compliant application logic.
Short for Compact Disc Audio, CDA (.cda) are audio files that can be stored on CD media. The .cda files are representations of CD audio tracks. CDA (.cda) files can be played only from a CD-ROM. This is format used for encoding music on all commercial compact discs. [Adapted from CoolUtils.com]
Abbreviation of Copper Data Distribution Interface, a network technology capable of carrying data at 100 Mbps over unshielded twisted pair (UTP) cable. CDDI is a trade name of Crescendo Communications (acquired by Cisco Systems in 1993) and commonly used instead of the general term Twisted Pair Physical Layer Medium (TP-PMD). TP-PMD is the general ANSI […]
Short for channel definition format, an XML specification developed by Microsoft that allows Web publishers to push content at users. Once a user subscribes to a CDF channel, any software that supports the CDF format will automatically receive new content posted on the channel’s Web server. Microsoft submitted CDF as a Note to the W3C […]