See information security.

1. The aggregate of participants in the use of a portion of cyberspace.
2. A special-interest group (SIG) of cyberspace participants. Synonym wired community.

An electronic site shared by a number of commercial interests, and at which users can browse, shop, and place orders for the products listed at that site. [Bahorsky] Synonym Internet mall.

1. One who uses the Internet.
2. Synonym Web surfer.

The impression of space and community formed by computers, computer networks, and their users; the virtual "world" that Internet users inhabit when they are online.

The practice of registering Internet domain names--usually based on prominent trade names, trademarks, or corporate names--before the legitimate holders of same have had an opportunity or interest in registering the domain names for themselves.
Note: Cybersquatters engage(d) in this practice, which has now been ruled illegal, for the purpose of (a) denying the domain name(s) to, or (b) attempting to… (Read More →)

In telegraphy, distortion that (a) is periodic and (b) is not characteristic, not biased, and not fortuitous.
Note: Causes of cyclic distortion include irregularities in the duration of contact time of the brushes of a transmitter distributor and interference by disturbing alternating currents.

1. An error-detection scheme that (a) uses parity bits generated by polynomial encoding of digital signals, (b) appends those parity bits to the digital signal, and (c) uses decoding algorithms that detect errors in the received digital signal.
Note: Error correction, if required, may be accomplished through the use of an automatic repeat-request (ARQ) system.
2. [An] error checking mechanism… (Read More →)

In ISDN, the 16-kb/s segment of a 144-kb/s, full-duplex subscriber service channel that is subdivided into 2B+D channels, i.e., into two 64-kb/s clear channels and one 16-kb/s channel for the ISDN basic rate.
Note 1: The D channel is usually used for out-of-band signaling. The two 64-kb/s clear channels are used for subscriber voice and data services.
Note 2: The… (Read More →)

See D region, ionosphere.