The Domain Name System (DNS) is a distributed database that works in a client-server fashion, and takes a name, like www.yahoo.com, and provides an IP address, like 209.73.186.238. DNS exists for us, humans, because machines need to communicate using their IP addresses, but we much prefer names, that's all. DNS servers use replication and caching to make DNS very fast, efficient and fault tolerant. The DNS database has a "tree" structure, with the top level branches being .com, .gov, .edu and so on. Every domain is broken down into subdomains that can be locally administered by individual companies for example. Each domain can contain hosts as well as other subdomains.
If you want to play with DNS a little, you can use the "nslookup" program. Just type "nslookup" and then you can input a name like www.cnn.com and it will tell you the IP address(es) for cnn.com. Type a question mark ? to see all of the available commands within nslookup.
2006-06-24 08:53:24
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answer #1
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answered by networkmaster 5
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A domain name server is used to determine the IP address of internet domain names so that browsers and other internet appliances can connect to them.
2006-06-24 06:33:11
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answer #3
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answered by Interested Dude 7
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Domain Name Server it is the fingerprint of you computer in Internet.
2006-06-24 06:28:31
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answer #4
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answered by Lil' Gay Monster 7
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