THE WHATIS.COM WORD-OF-THE-DAY June 26, 2002 subnet ______________ TODAY'S SPONSOR: The .tv Corporation
Save 30% on Web addresses! Not only will you get a great deal on your Web addresses, but you'll also get superior customer service, innovative products and services and a place that is easy to register and manage your Web addresses. Great names are still available. Register the names you want before someone else does!Check it out now: http://WhatIs.com/r/0,,4188,00.htm?the.tvcorporation ______________ TODAY'S WORD: subnet This is an abridged definition. See our complete definition for subnet with hyperlinks at http://searchnetworking.techtarget.com/sDefinition/0,,sid7_gci213065,00.html A subnet (short for "subnetwork") is an identifiably separate part of an organization's network. Typically, a subnet may represent all the machines at one geographic location, in one building, or on the same local area network (LAN). Having an organization's network divided into subnets allows it to be connected to the Internet with a single shared network address. Without subnets, an organization could get multiple connections to the Internet, one for each of its physically separate subnetworks, but this would require an unnecessary use of the limited number of network numbers the Internet has to assign. It would also require that Internet routing tables on gateways outside the organization would need to know about and have to manage routing that could and should be handled within an organization. The Internet is a collection of networks whose users communicate with each other. Each communication carries the address of the source and destination networks and the particular machine within the network associated with the user or host computer at each end. This address is called the IP address (Internet Protocol address). This 32-bit IP address has two parts: one part identifies the network (with the network number) and the other part identifies the specific machine or host within the network (with the host number). An organization can use some of the bits in the machine or host part of the address to identify a specific subnet. Effectively, the IP address then contains three parts: the network number, the subnet number, and the machine number. The standard procedure for creating and identifying subnets is provided in Internet Request for Comments 950. RELATED TERMS: local area network http://searchnetworking.techtarget.com/sDefinition/0,,sid7_gci212495,00.html IP address http://searchwebmanagement.techtarget.com/sDefinition/0,,sid27_gci212381,00.html Request for Comments http://searchwin2000.techtarget.com/sDefinition/0,,sid1_gci214264,00.html ______________________ SELECTED LINKS: Chuck Semeria's paper on "IP Addressing" may be helpful. http://www.xb5partners.com/columbia/class02/semeria.html SearchNetworking provides "Best Web Links" for "Network Planning." http://searchnetworking.techtarget.com/bestWebLinks/0,289521,sid7_tax378,00.html ______________________ WHATIS DISCUSSION FORUM | Challenge #6: Why partition a hard drive? Challenges are another learning tool where you (the reader) try to solve various real-life IT problems. Sometimes there's one right answer, but more often than not (just as in real life) there are several ways to approach the problem -- and that's why reading how other people would troubleshoot the Challenge is a fun way to learn. If you haven't tried a Challenge yet, you might want to take a look at Challenge #6: Partioning a hard drive. In this challenge, power-user Rudy wants to know if there's any reason why he shouldn't blow away the partitions on his new laptop. >>Try the challenge http://whatis.discussions.techtarget.com/WebX?[EMAIL PROTECTED]^1@.1dcfaafe/0!viewtype=threadDate&skip=&expand= ______________________ QUIZ #28 | Ethernet How much do you know about the most popular network technology in the world? Take our latest quiz and find out! http://searchnetworking.techtarget.com/sDefinition/0,,sid7_gci834253,00.html ______________________________ RECENT ADDITIONS AND UPDATES [1] file format http://whatis.techtarget.com/definition/0,,sid9_gci834191,00.html [2] screen name http://searchwebservices.techtarget.com/sDefinition/0,,sid26_gci833124,00.html [3] IRIX http://whatis.techtarget.com/definition/0,,sid9_gci833563,00.html [4] NET FAIR http://searchebusiness.techtarget.com/sDefinition/0,,sid19_gci833626,00.html [5] Sable http://whatis.techtarget.com/definition/0,,sid9_gci833759,00.html ____________________________________________________________________ ::::::::::::::::::: WHATIS.COM CONTACTS ::::::::::::::::::: LOWELL THING, Site Editor ([EMAIL PROTECTED]) ____________________________________________________________________ MARGARET ROUSE, Assistant Editor ([EMAIL PROTECTED]) ___________________________________________________________________ :::::::::::::::::::: ABOUT THIS NEWSLETTER ::::::::::::::::::::: Created by TechTarget (http://www.techtarget.com) TechTarget - The Most Targeted IT Media Copyright 2002, All Rights Reserved. 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