A module, usually composed of a single integrated circuit, that contains both the receiving and transmitting circuits required for asynchronous serial communication. Acronym for universal asynchronous receiver-transmitter. The typosquatter is paid by the number of users who see the ads. A user who makes a mistake typing in a Web site address will be taken to the typosquatter’s site, which typically is loaded with banner and pop-up ads. The typosquatter registers variations of popular trademarked domain names that contain the most likely spelling errors (for example: JCPenny). A form of cybersquatter that takes advantage of typographical errors to snare Web surfers. A public data network available in over 100 countries, with links to some online services and Internet service providers. txt extension does not include any formatting commands, so it is readable in any text editor or word processing program. A file extension that identifies ASCII text files. A line used to carry transmitted data from one device to another, as from computer to modem in RS-232-C connections, pin 2. See also domain, one-way trust, transitive trust. All two-way trusts between Windows domains in the same domain tree or forest are transitive. Two-way trusts can be transitive or nontransitive. For example, domain A trusts domain B and domain B trusts domain A. In a two-way trust relationship, each domain has established a one-way trust with the other domain. A type of trust relationship in which both of the domains in the relationship trust each other. Fourth-generation languages (4GL) have helped to popularize the two-tier client/ server architecture. A client/business logic layer and the database layer. Two-nines availability equates to approximately 87.6 hours of downtime in a standard 365-day year. The availability of a system 99% of the time.

Twisted-pair wiring is typical of telephone cabling. Twisted-pair wiring can consist of a single pair of wires or, in thicker cables, two, four, or more pairs of wires. Twisted-pair wiring comes in two forms, unshielded twisted pair (UTP) and shielded twisted pair (STP), the latter named for an extra protective sheath wrapped around each insulated pair of wires. Wiring consisting of two insulated strands of copper twisted around one another to form a cable.

One of the wires in the pair carries the sensitive signal, and the other wire is grounded. It is used to reduce signal interference introduced by a strong radio source such as a nearby cable. A cable made of two separately insulated strands of wire twisted together. The communications equivalent of gridlock a reference to bottlenecks caused by heavy traffic over a communications system or network.

Microsoft Internet & Networking Dictionary

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