Internet Glossary
Unfamiliar or unclear about a term or concept related to Web hosting services or Domain registration? This glossary gives meaning to much of the commonly used vocabulary associated with Web Hosting and the Internet. Simply click on any alphabetical category to quickly find the word you're looking for.
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UDDI / Universal Description, Discovery, and Integration
UUDI is an XML-based registry for businesses worldwide to list themselves on the Internet. Its ultimate goal is to streamline online transactions by enabling companies to find one another on the Web and make their systems interoperable for e-commerce. UDDI is often compared to a telephone book's white, yellow, and green pages. The project allows businesses to list themselves by name, product, location, or the Web services they offer.
UDP / User Datagram Protocol
The Internet standard protocol for sending datagram between user programs, this protocol neither guarantees delivery nor does it require a connection. As a result it is lightweight and efficient, but all error processing and retransmission must be taken care of by the application program. This protocol is built on top of IP and uses IP for datagram delivery (see TCP/IP).
UIML / User Interface Markup Language
UIML is a descriptive language that lets you create a Web page that can be sent to any kind of interface device. UIML is an application of the Extensible Markup Language (XML). One can think of it as the XML description that describes the data structure (names of fields or elements) of a user interface.
Unicode
Unicode is an entirely new idea in setting up binary codes for text or script characters. Officially called the Unicode Worldwide Character Standard, it is a system for "the interchange, processing, and display of the written texts of the diverse languages of the modern world." It also supports many classical and historical texts in a number of languages.
UNIX
An operating system, the inspiration behind much modern software and the code on which the Internet was originally built, Invented by Ken Thompson at AT&T's Bell Labs in 1969, the original purpose of Unix was apparently to provide a way for its author to play games on his computer. It quickly turned into an enormously powerful and secure system capable of supporting big networks, and is now used by everyone from small academic institutions to huge ISPS.
Unix / Linux Hosting
Unix or Linux hosting defines the services of housing, serving, and maintaining files for one or more Web sites on Unix or Linux web server at high speed Internet connection.
Unlimited bandwidth and Unlimited Web space
Unlimited bandwidth and Unlimited Web space are one of the more controversial topics in the web hosting community. Many hosting clients have been burned by "unlimited" plans, and many hosts do not like competing against what they consider to be a deceptive pricing practice. The argument for unlimited bandwidth is that, like cell phone plan minutes or all-you-can-eat buffets, the supply is not unlimited but it can be estimated with some degree of certainty. The argument against unlimited is that for every "unlimited" plan there is a certain level of usage above which the host will refuse to provide service, and owners of successful websites do not take needless chances with their revenue streams
Upload
To transfer information from a local computer to a remote one, such as a Web server, across a network or modem connection.
UPS
Uninterruptible Power Supply; UPS keeps the server running on a battery for several minutes after a power outage, allowing for a clean shutdown without loss of data. UPS can also shield the server from line voltage spikes and drops
URI / Uniform Resource Identifier
To paraphrase the World Wide Web Consortium, Internet space is inhabited by many points of content. A URI is the way you identify any of those points of content. The most common form of URI is the Web page address, which is a particular form or subset of URI called a URL.
URL / Uniform Resource Locator
An address widget that identifies a document or resource on the WWW
URL-minder
URL-minder is an agent or robot that notifies you when a particular Web page has changed.
URN / Uniform Resource Name
A URN is an Internet resource with a name that has persistent significance - that is, the user of the URN can expect that someone else (or a program) will be able to find the resource. A URN looks something like a Web page address or URL.
Usenet
Where newsgroups live; At the end of the 20th century Usenet was home to over 30,000 of the these discussion groups, each dedicated to a specific topic and each containing a bewildering range of conversations.
Username
A unique name or identification assigned to a user of a computer system. Sometimes used synonymously with address.
UTP
(Unshielded Twisted Pair) Similar to the STP, but without the shielding metal layer, It is more prone to interference but is less bulky that the STP cables
Uuencode
A technique for encoding binary files and messages into a form that can be sent via e-mail
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