8TH EDITION Data Communications Networl<s ~ Computer A BUSINESS USER'S APPROACH Curt M. White Data Communications & Computer Networks A Business User's Approach Copyri.ebl 2016 Cetlpge l..eamiftl. AU ltigbls kewve4. May not k copied. scatmed, or•pltc.ed. irl -..·hole or in. part. [)Qe t() clecttooic r\eht&. IIOfi\C. tbird pany ~COli may be M~:ppreued from t~ e.Book Ml¥« (;(Jhapset(t). Bdi*Of\al revkw h~ deemed that any '*'pprcMCd con1cnt dQe$ oot maleriol_ly aff~ We <>'~raU leunina c~tpcriel)t(l, Ccn&a&e lnmitl& raen~ the ri&ht tQ remove addirion•l cont4"nt at any tili)C ~f $ubsequmt ri&hu Te$tricrions rcqu:ire il. Copyright 2016 Ceagagc Lcaming. All Rightl Resavcd. May DOt be copied, O<alliiCd, or dupli<ated, ill whole or ill part. Due to e1ccUUDic tigbts, some third porty content lillY be BIIPJ~~aoccl from the cllook wl/or cCbaplct(s). Editorlal moicw has dccmo<l that any BIIPPRsocd content doeo not mataially atfcet the 0\'allllcamiog ex~. ~ Lcaming reserves tbc right to ~ addiJional contcot at any time if subocq~~e~~t tigbts remictions roqm it. EIGHTH EDITION Data Communications & Computer Networks A Business User's Approach Curt M. White DePaul University #. . t~ CENGAGE , .. Learning· Australia • Brazil • Mexico • Singapore • United Kingdom • United States Copyri.ebl 2016 Cetlpge l..eamiftl. AU ltigbls kewve4. May not k copied. scatmed, or•pltc.ed. irl -..·hole or in. part. [)Qe t() clecttooic r\eht&. IIOfi\C. tbird pany ~COli may be M~:ppreued from t~ e.Book Ml¥« (;(Jhapset(t). Bdi*Of\al revkw h~ deemed that any '*'pprcMCd con1cnt dQe$ oot maleriol_ly aff~ We <>'~raU leunina c~tpcriel)t(l, Ccn&a&e lnmitl& raen~ the ri&ht tQ remove addirion•l cont4"nt at any tili)C ~f $ubsequmt ri&hu Te$tricrions rcqu:ire il. This is an electronic version of the print textbook. 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Brief Contents PREFACE xvii Introduction to Computer Networks and Data Communications I 2 Fundamentals of Data and Signals 27 3 Conducted and Wireless Media 61 4 Making Connections I 0 I 5 Making Connections Efficient: Multiplexing and Compression 119 6 Errors, Error Detection, and Error Control 147 7 Local Area Networks: Part I 175 8 Local Area Networks: Part II 207 9 Introduction to Metropolitan Area Networks and Wide Area Networks 241 10 The Internet 269 I I Voice and Data Delivery Networks 307 12 Network Security 339 13 Network Design and Management 373 GLOSSARY 401 INDEX 415 vii Copyri.el'll 2016 Ccnpa:e Lwllia,. AU Rigbls Ruervc4. May not k copied. .scannc:d, or•pl~ed. itl ,.,,hole l)r in part. 0\le t() dcctt¢aic r\ehl$. $01'1\(. dnrd peny ooece011 may be wppr¢$$¢d from dlC. e.Book ~ (;(lhaps«(t). Bdi~l revinl hu deemed tbllt ~r urwrew:d «1'\ltat doe$ ootmal«ili11yaff~ the t>'~rAll INmin& e~tperieDee. Cenv&e Lami n& f'QC'nu the ri&ht to remove addirionall'OI'Ilent • t."'y til'l)t if $ub$«Jua'lt ri&hu rt$tric6ont require it. (cid:3) (cid:3) (cid:3) Copyright 2016 Ceagagc Lcaming. All Rightl Resavcd. May DOt be copied, O<alliiCd, or dupli<atcd, ill whole or ill part. Due to e1ccUUDic tigbts, some third porty content lillY be BIIPJ~~aoccl from the cllook wl/or cCbaplct(s). Editorlal moicw has dccmo<l that any BIIPPRsocd content doeo not mataially atfcet the 0\'allllcamiog ox~. ~ Lcaming reserves tbc right to ~ addiJional <011lellt at any time if subocq~~e~~t tigbts remictions n:qm it.