Letter: V
V.32
A CCITT V series standard used by fax modems for half- or full-duplex transmission at speeds up to 9600bps over point-to-point leased circuits. This standard is worldwide
V.32bis
A CCITT V series standard for modems transmitting at speeds up to 14,400 bps over leased or dial-up lines. This standard is worldwide.
V.34
A CCITT V series standard for full-duplex transmission at speeds up to 28,800bps. Modems adhering to this standard automatically adjust their speed to compensate for the quality of the phone line. This standard is worldwide.
V.42
A CCITT V series standard for regulating error-detection for high-speed modems. Modems conforming to this standard can be used over digital telephone networks, as opposed to the standard analog telephone networks. This standard is worldwide
V.42bis
A CCITT V series standard for data compression that lets modems reach data transfer speeds of up to 34,000bps. This standard is worldwide
Validation
Validation is a way to make sure that your code is compliant with the current HTML specifications. This means you can check to make sure that you didn't accidentally use proprietary tags that would only work on your particular browser. There are many HTML validation sites on the Web, such as Bobby, which will analyze single Web pages for their accessibility to people with disabilities, Weblint, one of the first validators, and the World Wide Web Consortium's rigorous validator, which provides validation for HTML 4.0.
Vector
Vector graphics produce images using mathematically generated points, lines and shapes that are rendered on a computer. The result is a file much smaller than a bitmap, which is easier to send and download over tight bandwidth connections. In addition, a vector file can be resized and manipulated without distorting the image. Macromedia’s Flash produces vector graphics, and most browsers now support vector graphics.
Veronica
(Very Easy Rodent Oriented Net-wide Index to Computerized Archives) -- Developed at the University of Nevada, Veronica is a constantly updated database of the names of almost every menu item on thousands of gopher servers. The Veronica database can be searched from most major gopher menus.
Veronica
(Very Easy Rodent-Oriented Netwide Index to Computer Archives). A program that lets users search "Gopherspace" by keyword.
Virus
Your computer can get a virus just like your body can be invaded with a virus making you (or your computer) sick. A virus can wipe out information on your computer and create major havoc. Viruses usually originate from malicious people. You can unintentionally download virus from a web site or get it from a disk that someone has lent you. There are virus-checking programs, but there are new viruses popping up every day. So the best defense against a virus is to be very careful not to download programs or data from a site you're not familiar with.
Visit
At first glance, a visit seems pretty straightforward: it begins when a visitor comes to a Web site and ends when they leave. But try to measure a visit and things get a little tricky. For example, if a visitor reads an article on your site, follows a related link to another site, then returns to your site afterward, should that count as one visit or two? Or suppose someone comes to your Web page and then starts working on something else, leaving their browser open in the background. If they click back to your site eight hours later, should that be considered a separate visit, or just one mighty long stay? According to the Media Measurement Task Force at the Internet Advertising Bureau (IAB), a visit is "a series of page requests by a visitor without 30 minutes of inactivity" - which just goes to show how arbitrary the measurement of a visit can be.
Visit
Commonly called Visitor Session. All activity for one visitor of a web site. By default, a visitor session is terminated when a visitor is inactive for more than 30 minutes.
Visitor
You'd think that figuring out how many unique individuals visit a Web site in a given time period would be pretty easy, but in reality it's not. Web site developers have few ways of determining exactly how many people use a given computer, IP address, or ISP account. In fact, beyond the data you get from registration processes and cookies, there's very little reliable information on how many people visit a site, which makes hard numbers hard to come by.
Visitor Session
A session of activity (all hits) for one visitor of a web site. A unique visitor is determined by the IP address or cookie. By default, a visitor session is terminated when a visitor is inactive for more than 30 minutes. This duration can be changed from General panel in the Options, Web Traffic Analysis dialog. Synonym: Visit.
VMS
The native operating system of Digital Equipment Corporation's VAX computers
VPN
(Virtual Private Network) -- Usually refers to a network in which some of the parts are connected using the public Internet, but the data sent across the Internet is encrypted, so the entire network is "virtually" private.
A typical example would be a company network where there are two offices in different cities. Using the Internet the two offices mereg their networks into one network, but encrypt traffic that uses the Internet link.
VR
Virtual Reality
VRM
Visitor Relationship Management). Compare CRM
VT100
The DEC terminal (actually, the terminal's operating parameters and command set) generally used to define the option of "standard computer terminal". Countless other terminals, as well as PC telecommunications programs, can emulate the VT100
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