Data Communications Networking Devices - 4th Ed.pdf

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xii _______________________________________________________________________ CONTENTSThe ATM cell header 259ATM connections and cell switching 262Review Questions 2643. Local Area Networks 2693.1 Overview 269Origin 270Comparison to WANs 270Geographic area 270Data transmission and error rates 271Ownership 271Regulation 271Data routing and topology 272Type of information carried 272Utilization bene®ts 273Peripheral sharing 273Common software access 273Electronic mail 273Gateway access to mainframes 2733.2 Technological Characteristics 274Topology 274Loop 274Bus 275Ring 275Star 275Tree 275Mixed topologies 276Comparison of topologies 276Signaling methods 277Broadband versus baseband 277Broadband signaling 277Baseband signaling 278Transmission medium 279Twisted-pair 280Coaxial cable 288Fiber optic cable 291Access method 292Listeners and talkers 292Carrier-Sense Multiple Access with Collision Detection CSMA/CD) 293Token passing 2943.3 IEEE 802 Standards 296802 committees 297Data link subdivision 298Medium Access Control 299Logical Link Control 299Physical layer subdivision 3003.4 Ethernet Networks 300Original network components 300Coaxial cable 300Transceiver and transceiver cable 301Interface board 302Repeaters 302IEEE 802.3 networks 303Network names 30310BASE-5 30310BASE-2 30510BROAD-36 306
CONTENTS ______________________________________________________________________ xiii1BASE-5 30710BASE-T 308100BASE-T 311100BASE-T4 313100BASE-TX 315100BASE-FX 317Network utilization 317Gigabit Ethernet 319Frame composition 320Preamble ®eld 321Start of frame delimiter ®eld 321Destination address ®eld 321Source address ®eld 323Type ®eld 324Length ®eld 324Data ®eld 324Frame check sequence ®eld 324Media Access Control MAC) overview 325Logical Link Control LLC) overview 325Types and classes of service 326Type 1 326Type 2 327Type 3 327Classes of service 3283.5 Token-Ring 328Redundant versus non-redundant main ring paths 329Cabling and device restrictions 329Intra-MAU cabling distances 330Adjusted ring length 332Other ring size considerations 332Transmission formats 334Token 334Abort 334Frame 334Starting/ending delimiters 335Access control 337Frame control 338Destination address 339Source address 340Routing information 341Information ®eld 342Frame check sequence 342Frame status 342Medium Access Control 343MAC control 343Purge frame 344Beacon frame 344Duplicate address test frame 345Logical Link Control 345Review Questions 3464. Wide Area Network Transmission Equipment 3514.1 Acoustic Couplers 351US and European compatibility 352Operation 354Problems in usage 3544.2 Modems 355
Page 3 and 4: Copyright # 1986, 1989, 1992, 1999
Page 5 and 6: CONTENTSPrefaceAcknowledgementsxxii
Page 7 and 8: CONTENTS __________________________
Page 9: CONTENTS __________________________
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Page 25 and 26: 1.2 LINE CONNECTIONS ______________
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1.12 ERROR DETECTION AND CORRECTION
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1.13 STANDARDS ORGANIZATIONS, ACTIV
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1.16 INTEGRATED SERVICES DIGITAL NE
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REVIEW QUESTIONS __________________
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Data Communications Networking Devi
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4.1 ACOUSTIC COUPLERS _____________
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4.2 MODEMS ________________________
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4.6 SECURITY MODEMS _______________
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4.8 LIMITED-DISTANCE MODEMS _______
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4.9 BROADBAND MODEMS ______________
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4.10 DIGITAL SERVICE UNITS ________
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4.11 CHANNEL SERVICE UNITS ________
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4.12 PARALLEL INTERFACE EXTENDERS _
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Data Communications Networking Devi
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