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Subnet Masking
What is subnet masking? What is it for? One of the most difficult topics to understand about TCP/IP appears to be subnet masking. Many books on TCP/IP ignore it or give it only a paragraph or one page in a 500 page book. The few I've seen that do give subnetting serious attention fail to provide a good basic definition. Without a good definition, the difficulty of the material is magnified. I hope the definition linked above will provide you the insight you might otherwise miss. The second link above began as an article written to help people prepare for Microsoft's TCP/IP certification exam, but it's been rewritten to generalize it a bit more for anyone who wants to figure out how subnet masking works. The third link is a definition of IP Addressing, in response to requests from a few folks who were having trouble with that. If you have specific questions you need answered, try the Networking Resource Channel at Experts-Exchange. Copyright © 1999-2006 John Lambert, all rights reserved. John is a senior consultant with Thomas & Herbert Consulting. |
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