FEATURED VIDEO
Sponsored By:
SLIDE SHOWS
As if they needed more stress, organizations are facing evolving and increasingly stringent compliance regulations from the Payment Card Industry, as well as Sarbanes-Oxley, HIPAA and others. Here are a few security compliance products that can make the audit process less excruciating.
Here are 10 of the distributor's hottest new offerings winning over solution providers.
New smartphones from Sony, Motorola and the first-ever Twitter-only mobile device -- the TwitterPeek -- headline a busy week for handset makers as the holiday shopping season heats up.
INSIDE CHANNELWEB

Results found for: DNS
Printer Print This Page

Image Friendly
techweb
DNS
techweb
(Domain Name System) A system for converting host names and domain names into IP addresses on the Internet or on local networks that use the TCP/IP protocol. For example, when a Web site address is given to the DNS either by typing a URL in a browser or behind the scenes from one application to another, DNS servers return the IP address of the server associated with that name.

     In this hypothetical example, WWW.COMPANY.COM would be converted into the IP address 204.0.8.51. Without DNS, you would have to type the four numbers and dots into your browser to retrieve the Web site, which of course, you can do. Try finding the IP of a favorite Web site and type in the dotted number instead of the domain name!

A Hierarchy
The DNS system is a hierarchy of database servers that start with the root servers for all the top level domains (.com, .net, etc.). The root servers point to authoritative servers residing within ISPs and companies that resolve the host names to complete the name resolution. Using the example WWW.COMPANY.COM, COMPANY.COM is the domain name, and WWW is the host name. The domain name is the organization's identity on the Web, and the host name is the name of the actual Web server within that domain (see WWW). See DNS records, reverse DNS, DDNS, HOSTS file, mDNS, ping, root server and WINS.




Getting a Web Page
Turning a URL in a Web browser into an IP address can take numerous queries. This is a simplified diagram because the original requester actually talks to each name server in turn, and there can be more name servers in between. A request can also be satisfied from a DNS cache along the way and not need to reach the authoritative server.
Search For DNS On ChannelWeb

Find the latest news and information on DNS from across the Channelweb Network of IT Web sites.


techweb
temrs similiar to your header
Entries before DNS
techweb
techweb DNA
techweb DNC Registry
techweb DNG file
techweb DNIS
techweb DNR
 techweb Entries after DNS
techweb
techweb DNS cache poisoning
techweb DNS failure
techweb DNS hijacking
techweb DNS name
techweb DNS name resolution
techweb
define another it term
techweb techweb

techweb
Or get a random definition
techweb
copyright THIS COPYRIGHTED DEFINITION IS FOR PERSONAL USE ONLY.
All other reproduction is strictly prohibited without permission from the publisher.

Copyright (©) 1981-2008 The Computer Language Company
Inc All rights reserved.
ADVERTISEMENT




CHANNEL SERVICES >>