THE WHATIS.COM WORD-OF-THE-DAY April 19, 2004 multiplexing
_____________ SPONSORED BY: PC Lifecycle Info Center Visit the new PC Lifecycle Info Center on SearchCIO.com. You'll find news, tips, Webcasts, white papers and targeted Web resources focused on all aspects of managing the PC lifecycle - from purchase to retirement. Get valuable advice and insight on how your IT organization can make smart PC investment decisions. Topics covered include PC replacement cycles, patch management, ROI, mobile workforce management, desktop security, data backup, wireless LAN -- and much more! ______________________ TODAY'S WORD: multiplexing See our complete definition with hyperlinks at http://searchnetworking.techtarget.com/sDefinition/0,,sid7_gci212614,00.html?track=NL-34&ad=480831 Multiplexing is sending multiple signals or streams of information on a carrier at the same time in the form of a single, complex signal and then recovering the separate signals at the receiving end. In analog transmission, signals are commonly multiplexed using frequency-division multiplexing (FDM), in which the carrier bandwidth is divided into subchannels of different frequency widths, each carrying a signal at the same time in parallel. In digital transmission, signals are commonly multiplexed using time-division multiplexing (TDM), in which the multiple signals are carried over the same channel in alternating time slots. In some optical fiber networks, multiple signals are carried together as separate wavelengths of light in a multiplexed signal using dense wavelength division multiplexing(DWDM). ______________________ RELATED TERMS: carrier http://searchnetworking.techtarget.com/sDefinition/0,,sid7_gci211747,00.html?track=NL-34&ad=480831 signal http://searchnetworking.techtarget.com/sDefinition/0,,sid7_gci212986,00.html?track=NL-34&ad=480831 frequency-division multiplexing http://searchnetworking.techtarget.com/sDefinition/0,,sid7_gci213958,00.html?track=NL-34&ad=480831 time-division multiplexing http://whatis.techtarget.com/definition/0,,sid9_gci214174,00.html?track=NL-34&ad=480831 dense wavelength division multiplexing http://searchnetworking.techtarget.com/sDefinition/0,,sid7_gci213892,00.html?track=NL-34&ad=480831 ______________________ SELECTED LINKS: SearchNetworking.com provides links to more information about various kinds of multiplexing. http://searchnetworking.techtarget.com/search/1,293876,sid7,00.html?track=NL-34&ad=480831&query=multiplexing _____________________ TODAY'S TECH NEWS: SD 2004 PREVIEW: WHY YOU'LL SOON USE DISK FOR BACKUP A lot has been made recently of disk's emergence as a viable option for backup and recovery. http://searchstorage.techtarget.com/qna/0,289202,sid5_gci959998,00.html?track=NL-34&ad=480831&ad=480762 SIEBEL DELIVERS ON REVENUE EXPECTATIONS Siebel announced a sharp rise in quarterly profits thanks to license revenue. http://searchcrm.techtarget.com/originalContent/0,289142,sid11_gci960055,00.html?track=NL-34&ad=480831&ad=480762 REPORT: OFFSHORE OUTSOURCING HELPS U.S. JOB MARKET A new report finds that offshore outsourcing allows companies to create new jobs within U.S. borders. http://searchcio.techtarget.com/originalContent/0,289142,sid19_gci959840,00.html?track=NL-34&ad=480831&ad=480762 >> Catch up on all the latest IT news at http://searchtechtarget.techtarget.com?track=NL-34&ad=480831 ______________________ FAST GUIDE | Spring cleaning -- IT Style Winter is over and it's time to clean out your car, your closets and yes -- your computer. We've gathered information to help you organize your files, clear the clutter from your hard drive and physically clean the dust, grime, coffee stains and crumbs from your hardware. http://searchcio.techtarget.com/infoCenter/tip/0,294276,sid19_gci958666_tax296044,00.html?track=NL-34&ad=480831&ad=480762 ______________________ SECRET WORD-OF-THE-DAY | What is IT? Is it a bird? Is it a fish? At any rate, it's the Linux mascot. Do you think you know the Secret Word? Click to see if you're right! http://searchenterpriselinux.techtarget.com/gDefinition/0,294236,sid39_gci513154,00.html?track=NL-34&ad=480831 ______________________ HOROSCOPES FOR GEEKS | April Find out what the stars have in store for you this month! http://searchcio.techtarget.com/sDefinition/0,,sid19_gci919205,00.html?track=NL-34&ad=480831&ad=480762 ______________________ DO YOU SPEAK GEEK? | Passwords Take a quick quiz and see how many password-related terms you know! http://searchsecurity.techtarget.com/sDefinition/0,,sid14_gci957024,00.html?track=NL-34&ad=480831&ad=480762 ______________________ CAREER CENTER | Dice.com Looking for a new job? Visit the WhatIs.com Career Center powered by Dice and find over 37,000 tech positions to choose from. And get the career resources you need to set yourself apart from other job seekers. Find training and certification resources, get help with your resume and more. Visit today! http://whatis.techtarget.com/dice/0,294542,sid9,00.html?track=NL-34&ad=480831&ad=480762&Offer=dicewhssrp34 ______________________________ RECENT ADDITIONS AND UPDATES (1) broadcast flag http://whatis.techtarget.com/definition/0,,sid9_gci959980,00.html?track=NL-34&ad=480831&ad=480762 (2) virtual desktop manager http://searchwin2000.techtarget.com/sDefinition/0,,sid1_gci959452,00.html?track=NL-34&ad=480831&ad=480762 (3) false acceptance http://searchsecurity.techtarget.com/sDefinition/0,,sid14_gci959444,00.html?track=NL-34&ad=480831&ad=480762 (4) point-of-presence http://searchnetworking.techtarget.com/sDefinition/0,,sid7_gci212802,00.html?track=NL-34&ad=480831&ad=480762 (5) Six Sigma http://searchcio.techtarget.com/sDefinition/0,,sid19_gci763122,00.html?track=NL-34&ad=480831&ad=480762 ____________________________________________________________________ ::::::::::::::::::: WHATIS.COM CONTACTS ::::::::::::::::::: MARGARET ROUSE, Site Editor ([EMAIL PROTECTED]) IVY WIGMORE, Consulting Editor ([EMAIL PROTECTED]) LOWELL THING, Consulting Editor and Founder ([EMAIL PROTECTED]) GABRIELLE DERUSSY, Advertising ([EMAIL PROTECTED]) ::::::::::::::::::::: ABOUT THIS NEWSLETTER :::::::::::::::::::::: This e-newsletter is published by WhatIs.com, a targeted Web site from TechTarget, the most targeted IT media and events company. 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