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U |
| There are 13 entries in the glossary. |
| Pages: 1 |
| U is a unit of measurement that is typically used to measure rack-mounted equipment such as hard drives, switchers and routers. One U measures 1.75 inches, so a piece of equipment that is 24 inches long (the length of a normal rack) but 1U high is thought to take up a unit of rack space. |
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| UDP (User Datagram Protocol) is a section of the TCP/IT suite of data transference protocols. It is normally used for streaming media as it doesn't acknowledge when the data has reached it's destination. |
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| Ultra DMA is a method of transferring data to and from a computer's memory and hard disk and it's highest burst rate is 33.3 MBps which is double that of the original DMA. Not only does Ultra DMA make your computer run a lot more efficiently it also features a utility called Cyclical Redundancy Checking that enables data integrity protection. |
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| UML (Unified Modeling Language) is a form of programming language that was developed to assist object-oriented software developments. Programmers tend to make objects that consist of uniform sets of data that are located in a program in order to organise their program codes more efficiently. |
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| UNC (Universal Naming Convention) is a term for a filename format that highlights the locations of folders, files and resources on a LAN. It is also used to locate peripherals used by several computers on the same network. |
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| A Unique Visitor is a real person who has accessed a Web site and the Web server records the IP address so regardless of how many pages that person accesses they will still only be counted as one. |
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| Unix is an operating system that was created by Bell Labs in the 60s and it gained support from high-level programmers in the 70s. The first internet services originally were hosted by Unix machines it became a lot more popular in the 90s. There are various different versions of it and all run on many different operating systems so it becomes somewhat confusing, however the majority of people never need to use Unix. |
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| Upload is the term used to describe the act of sending information from one computer to another. |
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| URL or Unique Resource Locator is basically a Web address. |
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| USB or Unique Serial Bus is a way of connecting devices to a computer and USB ports are the most popular way of doing this. |
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| A User Agent is a client application that is used with a specific network protocol. The term is often used with reference to the ones that enter the World Wide Web such as spiders and web browsers. They can also be used to help people with disabilities use their computers better. |
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| A Username is the name that a person uses to identify themselves on a computer system. One computer can have many different users but if they all have different usernames (and passwords) then they can access their own accounts on that computer. |
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| Utilities are software programs designed to increase a computers functionality and such programs are anti virus, back up, disk repair etc. In short anything that helps your computer to run more efficiently is classed as a utility. |
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