What is DNS?

Written by Stephen Bucaro


Continued from page 1

If a DNS server doesn't haverepparttar data to answer a request, it makes a request to a root-name server. The root-name server will returnrepparttar 107834 address of a DNS server whererepparttar 107835 data can be found.

Each domain name onrepparttar 107836 Internet is required to be listed on a minimum of two DNS servers. This is so if one ofrepparttar 107837 DNS servers goes down, requests forrepparttar 107838 domains address can still be answered.

DNS also performs IP address to domain name translation. This makes it possible for servers to log accesses and for administrators to perform certain administrative and security tasks.

Information communicated overrepparttar 107839 Internet is broken into "packets" by Transmission Control Protocol (TCP). TCP attachesrepparttar 107840 IP address ofrepparttar 107841 requested domain to each packet so that they can be routed torepparttar 107842 domain. TCP also attachesrepparttar 107843 IP address ofrepparttar 107844 requesting computer torepparttar 107845 packets so that responses can be routed back.

When you enter, or click on, a web address in your browser,repparttar 107846 Internet's Domain Name Service (DNS) translatesrepparttar 107847 web address torepparttar 107848 web sites IP address. This is only part ofrepparttar 107849 story of how your computer connects torepparttar 107850 Web site you requested. In a future article you'll learn aboutrepparttar 107851 amazing process performed by routers. ---------------------------------------------------------- Resource Box: Copyright(C)2002 Bucaro TecHelp. To learn how to maintain your computer and use it more effectively to design a Web site and make money onrepparttar 107852 Web visit http://bucarotechelp.com To subscribe to Bucaro TecHelp Newsletter Send a blank email to bucarotechelp-subscribe@topica.com ----------------------------------------------------------

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Static Discharge Causes Flaky Damage

Written by Stephen Bucaro


Continued from page 1

The proper way to handle computer circuits is to wear a grounded wrist strap. Any electrical charge that builds up on your body is then immediately conducted to ground. But experienced technicians have tricks for controlling static electricity.

One trick is to leaverepparttar circuit board laying on top of an antistatic bag or antistatic foam as much as possible. Another is to leaverepparttar 107833 computer plugged intorepparttar 107834 AC outlet withrepparttar 107835 computers power switch off. This places ground onrepparttar 107836 computers metal case. Thenrepparttar 107837 technician works with one hand always on a metal part ofrepparttar 107838 case. Any electrical charge that builds up on your body is then immediately conducted to groundrepparttar 107839 same as with a wrist strap.

The important thing is to take static discharge seriously. Don't stick yourself or someone else with a flaky computer because you were too lazy to take basic care to protect against static discharge. ---------------------------------------------------------- Resource Box: Copyright(C)2002 Bucaro TecHelp. To learn how to maintain your computer and use it more effectively to design a Web site and make money onrepparttar 107840 Web visit http://bucarotechelp.com To subscribe to Bucaro TecHelp Newsletter Send a blank email to bucarotechelp-subscribe@topica.com ----------------------------------------------------------

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