The Internet protocol suite is the set of communications protocols that implements the protocol stack on which the Internet and many commercial networks run. It is part of the TCP/IP protocol suite, which is named after two of the most important protocols in it: the Transmission Control Protocol (TCP) and the Internet Protocol (IP), which were also the first two networking protocols defined. A review of TCP/IP is given under that heading. Note that today's TCP/IP networking represents a synthesis of two developments that began in the 1970's, namely LAN's (Local Area Networks) and the Internet, that revolutionalised computing.

Source: wikipedia.org

A program that allows people to log on to other computers or bulletin board systems on the Internet and run software remotely from their location.

Source: Sweeney, Susan

A terabyte is a measurement term for data storage capacity equal to 1000 gigabytes,

A sequence of responses to an initial message posting. This enables you to follow or join an individual discussion in a newsgroup from among the many that may be there.

Source: Sweeney, Susan

A term used by graphic designers and photographers for a small-image representation of a larger image, usually intended to make it easier and faster to look at or manage a group of larger images. For example, software that lets you manage a number of images often provided a miniaturized version of each image so that you don't have to rember the file name of each image. Web sites with many pictures, such as online stores with visual catalogs, often provide thumbnail images instead of larger images to make the page download faster. This allows the user to control which images are seen in full size.

Source: Sweeney, Susan

Trojan horse is a program that contains or installs a malicious program (sometimes called the payload or 'trojan'). The term is derived from the classical myth of the Trojan Horse. Trojan horses may appear to be useful or interesting programs (or at the very least harmless) to an unsuspecting user, but are actually harmful when executed.

Source: wikipedia.org