THE WHATIS.COM WORD-OF-THE-DAY August 30, 2002 NAK ______________ TODAY'S SPONSOR: VeriSign - The Value of Trust
Secure all your Web servers now - with a proven 5-part strategy. The FREE Server Security Guide shows you how to deploy the latest encryption and authentication techniques, deliver transparent protection with the strongest security without disrupting users, and more. Get your FREE Guide now: http://WhatIs.com/r/0,,5307,00.htm?FreeGuide ______________ TODAY'S WORD: NAK See our definition with hyperlinks at http://searchnetworking.techtarget.com/sDefinition/0,,sid7_gci847658,00.html NAK is an abbreviation for negative acknowledgment or not acknowledged. It is a signal used in digital communications to ensure that data is received with a minimum of errors. Sometimes the NAK signal is called REJ (for rejection or rejected). An alternative signal is ARQ (automatic request for retransmission). The NAK, REJ, or ARQ signal is typically sent by the recipient of a message (destination) back to the sender (source) after the receipt of an unrecognizable block of data of specific size. When the source receives a NAK or REJ signal from the destination, the source either repeats the block of data until the destination station recognizes the protocol and responds with an ACK (acknowledgment or acknowledged) signal, or else stops transmission entirely. When the source receives an ARQ signal from the destination, the source retransmits the block of data. NAK, REJ, or ARQ signals are special ASCII characters reserved so they are not confused with data characters. Compare ACK. RELATED TERMS: ASCII http://whatis.techtarget.com/definition/0,,sid9_gci211600,00.html ACK http://searchnetworking.techtarget.com/sDefinition/0,,sid7_gci847659,00.html ______________________ WHATIS DISCUSSION FORUM | Challenge #13: Choosing an HTML editor Les is at the point where he needs to invest some money in a good HTML editor. He's confused about whether to invest in a high-end product that has features he's not yet ready to use, or go with something less expensive that he might outgrow. THE CHALLENGE: What is your favorite HTML editor? Recommend an HTML editor for Les to consider purchasing. http://whatis.discussions.techtarget.com/WebX?[EMAIL PROTECTED]@.1dcfae0e/113!viewtype= ______________________ QUIZ #7 | Protocols How much do you know about IT protocols? Take our quiz and find out! http://searchsystemsmanagement.techtarget.com/sDefinition/0,,sid20_gci558485,00.html ______________________________ RECENT ADDITIONS AND UPDATES [1] platform http://searchhp.techtarget.com/sDefinition/0,,sid6_gci212797,00.html [2] Power over Ethernet http://searchnetworking.techtarget.com/sDefinition/0,,sid7_gci846792_top1,00.html [3] How do you pronounce IT? http://whatis.techtarget.com/definition/0,,sid9_gci845059,00.html [4] messaging http://searchsystemsmanagement.techtarget.com/sDefinition/0,,sid20_gci212554,00.html [5] HDCD http://whatis.techtarget.com/definition/0,,sid9_gci843768,00.html ____________________________________________________________________ ::::::::::::::::::: WHATIS.COM CONTACTS ::::::::::::::::::: LOWELL THING, Site Editor ([EMAIL PROTECTED]) ____________________________________________________________________ MARGARET ROUSE, Assistant Editor ([EMAIL PROTECTED]) ___________________________________________________________________ :::::::::::::::::::: ABOUT THIS NEWSLETTER ::::::::::::::::::::: Published by TechTarget (http://www.techtarget.com) TechTarget - The Most Targeted IT Media Copyright 2002, All Rights Reserved. If you would like to sponsor this or any TechTarget newsletter, please contact Gabrielle DeRussy at [EMAIL PROTECTED] Unsubscribe from 'Word of the Day' - Simply Reply to this Email with REMOVE within the Body or Subject > or - Go to: http://WhatIs.techtarget.com/register - Log in to edit your profile. - Click on the link to Edit email subscriptions. - Uncheck the box next to the newsletter you wish to unsubscribe from. - When finished, click "Save Changes to My Profile."
