DATA COMMUNICATIONS

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This section of the site is dedicated to helping to build a better understanding of the term 'Data Communication'. Listed from A-Z is a glossery of terms involved in computing, and the Internet. Click on a each individual link to visit each individual letter.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Yahoo!

n. The first major online Web-based directory and search engine for Internet resources, which can be found at http://www.yahoo.com. See also search engine (definition 2).

 

Yellow Pages

n. 1. The former name of a UNIX utility, provided by SunSoft (Sun Microsystems system software), that maintains a central database of names and locations of the resources on a network. The Yellow Pages enable processes on any node to locate resources by name. This utility is now known formally as NIS (Network Information Service). 2. InterNIC Registration Services' database of domain names and their IP addresses. See also domain name, IP address. 3. Any of several Internet business directory services. Some are print publications, some are strictly electronic, and some are both.

 

Ymodem

n. A variation of the Xmodem file transfer protocol that includes the following enhancements: the ability to transfer information in 1-kilobyte (1,024-byte) blocks, the ability to send multiple files (batch file transmission), cyclical redundancy checking (CRC), and the ability to abort transfer by transmitting two CAN (cancel) characters in a row. See also CRC, Xmodem.

 

yocto-

prefix A metric prefix meaning 10-24 (one septillionth in the American system).

 

yotta-

prefix Metric prefix meaning 1024 (one septillion in the American system).