Communication and IT Fundamentals

Light pens are used to manipulate information on a computer. It is a small, photosensitive device connected to a computer and moved by hand over an output display. It interacts with a computer through a cathode-ray tube display.

A modem is a combined device for modulation and demodulation. 

Intelligent character recognition (ICR) is the computer translation of manually entered text characters into machine-readable characters.

Virtual reality is an application of multimedia.
It is not a part of multimedia.

A motherboard is the physical arrangement in a computer that contains the computer's basic circuitry and components. On the typical motherboard, the circuitry is imprinted or affixed to the surface of a firm planar surface and usually manufactured in a single step.

The Cathode Ray Tube (CRT) is a vacuum tube containing an electron gun (a source of electrons) and a fluorescent screen, with internal or external means to accelerate and deflect the electron beam, used to create images in the form of light emitted from the fluorescent screen.

A usenet newsgroup is a repository usually within the usenet system, for messages posted from many users in different locations.

An extranet is a computer network that allows controlled access from the outside. An extranet is a private network that uses internet technology and the public telecommunication system to securely share part of a business's information.

WAP (Wireless Application Protocol) is a specification for a set of communication protocols to standardize the way that wireless devices, such as cellular telephones and radio transceivers, can be used for Internet access, including e-mail, the World Wide Web, newsgroups, and instant messaging.

MIS (management information systems) is a general term for the computer systems in an enterprise that provide information about its business operations.

Spoofing is a technique used by computer hackers to gain unauthorized access to our computers by sending a message with an IP address saying it is coming from trusted host.

Data mining is the practice of examining large databases in order to generate new information.

The JAR file format is common for distributing programs and libraries that are written in Java.

A web browser is a program used to view HTML documents. It is a software application used to enable computer users to locate and access web pages.

Cookie is a message given to a Web browser by a Web server. The browser stores the message in a text file. The message is then sent back to the server each time the browser requests a page from the server.