If a DNS server doesn't have data to answer a request, it makes a request to a root-name server. The root-name server will return address of a DNS server where data can be found.

Each domain name on Internet is required to be listed on a minimum of two DNS servers. This is so if one of DNS servers goes down, requests for 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 over Internet is broken into "packets" by Transmission Control Protocol (TCP). TCP attaches IP address of requested domain to each packet so that they can be routed to domain. TCP also attaches IP address of requesting computer to packets so that responses can be routed back.

When you enter, or click on, a web address in your browser, Internet's Domain Name Service (DNS) translates web address to web sites IP address. This is only part of story of how your computer connects to Web site you requested. In a future article you'll learn about 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 on Web visit http://bucarotechelp.com To subscribe to Bucaro TecHelp Newsletter Send a blank email to bucarotechelp-subscribe@topica.com ----------------------------------------------------------

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 leave circuit board laying on top of an antistatic bag or antistatic foam as much as possible. Another is to leave computer plugged into AC outlet with computers power switch off. This places ground on computers metal case. Then technician works with one hand always on a metal part of case. Any electrical charge that builds up on your body is then immediately conducted to ground 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 on Web visit http://bucarotechelp.com To subscribe to Bucaro TecHelp Newsletter Send a blank email to bucarotechelp-subscribe@topica.com ----------------------------------------------------------