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Questions Asked: 139

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What is CGI?

Asked by Poo in Computers & Technology at 7:34 AM on November 20, 2007

mrmister's Answer

Abbreviation of Common Gateway Interface, a specification for transferring information between a World Wide Web server and a CGI program. A CGI program is any program designed to accept and return data that conforms to the CGI specification. The program could be written in any programming language, including C, Perl, Java, or Visual Basic.

Answered at 9:08 PM on November 20, 2007

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What is Cable Modem?

Asked by Poo in Computers & Technology at 7:34 AM on November 20, 2007

mrmister's Answer

A modem designed to operate over cable TV lines. Because the coaxial cable used by cable TV provides much greater bandwidth than telephone lines, a cable modem can be used to achieve extremely fast access to the World Wide Web. This, combined with the fact that millions of homes are already wired for cable TV, has made the cable modem something of a holy grail for Internet and cable TV companies.

Answered at 9:06 PM on November 20, 2007

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What is CAD?

Asked by Poo in Computers & Technology at 7:35 AM on November 20, 2007

mrmister's Answer

Acronym for computer-aided design. A CAD system is a combination of hardware and software that enables engineers and architects to design everything from furniture to airplanes. In addition to the software, CAD systems require a high-quality graphics monitor; a mouse, light pen, or digitizing tablet for drawing; and a special printer or plotter for printing design specifications.

Answered at 9:04 PM on November 20, 2007

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What is data modeling?

Asked by ankancute in Computers & Technology at 11:11 AM on November 20, 2007

mrmister's Answer

The analysis of data objects and their relationships to other data objects. Data modeling is often the first step in database design and object-oriented programming as the designers first create a conceptual model of how data items relate to each other. Data modeling involves a progression from conceptual model to logical model to physical schema.

Answered at 9:01 PM on November 20, 2007

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What is CD?

Asked by Poo in Computers & Technology at 7:35 AM on November 20, 2007

mrmister's Answer

High density storage media based on a 4.75" reflective optical disc. Can hold up to 650,000,000 bytes of data, that is equivalent to 12,000 images or 200,000 pages of text. CDs may all look the same, but there are numerous standards for different applications. The most common are defined below.

Answered at 9:03 PM on November 20, 2007

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What is Cache?

Asked by Poo in Computers & Technology at 7:34 AM on November 20, 2007

mrmister's Answer

A cache stores recently-used information in a place where it can be accessed extremely fast. For example, a Web browser like Internet Explorer uses a cache to store the pages, images, and URLs of recently visted Web sites on your hard drive. With this neat strategy, when you visit a page you have recently been to, the pages and images don't have to be downloaded to your computer all over again. Because accessing your computer's hard disk is much faster than accessing the Internet, caching Web sites can speed up Web browsing significantly.

Answered at 9:05 PM on November 20, 2007

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What is ICMP?

Asked by ankancute in Computers & Technology at 11:33 AM on November 20, 2007

mrmister's Answer

Short for Internet Control Message Protocol, an extension to the Internet Protocol (IP) defined by RFC 792. ICMP supports packets containing error, control, and informational messages. The PING command, for example, uses ICMP to test an Internet connection.

Answered at 8:58 PM on November 20, 2007

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What is Payload?

Asked by ankancute in Computers & Technology at 11:17 AM on November 20, 2007

mrmister's Answer

When data is sent over the Internet, each unit transmitted includes both header information and the actual data being sent. The header identifies the source and destination of the packet, while the actual data is referred to as the payload. Because header information, or overhead data, is only used in the transmission process, it is stripped from the packet when it reaches its destination.

Answered at 8:59 PM on November 20, 2007

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What is laser printer?

Asked by ankancute in Computers & Technology at 11:14 AM on November 20, 2007

mrmister's Answer

A laser printer is a common type of computer printer that rapidly produces high quality text and graphics on plain paper. Like photocopiers, laser printers employ a xerographic printing process but differ from analog photocopiers in that the image is produced by the direct scanning of a laser beam across the printer's photoreceptor.

Answered at 9:00 PM on November 20, 2007

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What is PCI-X ?

Asked by ankancute in Computers & Technology at 11:18 AM on November 20, 2007

mrmister's Answer

PCI-X (Peripheral Component Interconnect Extended) is a computer bus and expansion card standard designed to supersede PCI. It is a double-wide version of PCI, running at up to four times the clock speed, but is otherwise similar in electrical implementation and uses the same protocol. It has itself been replaced in modern designs by the similar-sounding PCI Express.

Answered at 8:59 PM on November 20, 2007

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