Data Communications and Computer Networks - A Business User’s Approach

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Data communications and computer networks are vital in today's business world. DATABASE COMMUNICATIONS AND COMPUTER NETWORKS, 7th Edition balances technical and practical everyday aspects of data communications for future business managers, computer programmers, and system designers needing a thorough understanding of basic features, operations, and limitations of different types of computer networks. The Seventh Edition retains many of the elements that made past editions so popular, including readability and coverage of the most current technologies. This book offers full coverage of wireless technologies, industry convergence, compression techniques, network security, LAN technologies, VoIP, and error detection and correction.
SEVENTH ED|T|○N Data Communications and Computer Networks A Business User's Approach Curt M. White DePaul university . COURSE TECHNOLOGY CENGAGE Learning Australia· Brazil. Japan. Korea· Mexico· Singapore· Spain· United Kingdom· United States S COURSE TECHNOLOGY 1 CENGAGE Learning Data Communications and Computer 2013 Course Technology, Cengage Learning Networks: A Business Users Approach, Seventh edition ALL RIGHTS RESERVED. No part of this work covered by the copyright Curt M. white herein may be reproduced, transmitted, stored or used in any form or by any means-graphic, electronic, or mechanical, including but not limited to Editor-In-Chief: Joe Sabatino photocopying, recording, scanning, digitizing taping Web distribution, Senior Acquisitions Editor: Charles information netwarks, or information storage and retrieval systems, excep Mc Cormick, ]r Act-without the prior written permission of the publishe tates Copyright as permitted under Section 107 or 108 of the 1976 United Senior Product Manager Kate mason Editorial Assistant: Courtney Bavaro For product information and technology assistance, contact us at Marketing Director: Keri Witman Cengage Learning Customer Sales Support, 1-800-354-9706 Marketing Manager: Adam Marsh For permission to use material from this text or product Senior Marketing Communications Manager: submit all requests online at cengage. com/permissions. Libby ship Further permissions questions can be e-mailed to permissionrequest@cengage.com Marketing Coordinator: Suellen Ruttkay Media Editor: Chris Valentine Some of the product names and company names used in this book have been Art and Cover Direction Production used for identification purposes only and may be trademarks or registered Management, and Composition trademarks of their respective manufacturers and sellers PreMediaglobal Cover Credit: C Masterfile Royalty Free Library of Congress Control Number: 2011942796 Manufacturing Coordinator Julio Esperas SBN13:978-1133626466 SBN1o:1-133-62646-7 Instructor edit SBN13:978-1-133-52721-0 SBN10:113362721-8 20 Channel Center Street Boston, MA 02210 USA Microsoft, the Office logo, and Windows are either registered trademarks or n in the united states and/or other entity from the Microsoft Corporation, and not affiliated with Microsoll i s.Course Technology, a part of Ceng any manner. UNIXR is a registered trademark of The Open Group Linux(R is the registered trademark of Linus Torvalds in the U.S. and other countries iPhone, iPad, iPod, Nano, and Mac os X server are registered trademarks of Apple inc Course Technol art of c ge Learning, reserves the right to revise this publication and make changes from time to time in its content ithout notice Cengage Learning is a leading provider of customized learning solutions with office locations around the globe, including Singapore, the United Kingdom, Australia, Mexico, Brazil, and Japan. Locate your local office at www.cengage.com/global Printed in the United states of am l2345671514131211 To Kathleen. Hannah Colleen, and Samuel Memphis--it's never boring This page intentionally left blank Brief contents PREFACE I Introduction to Computer Networks and Data Communications 2 Fundamentals of Data and signals 29 3 Conducted and wireless media 63 4 Making Connections 03 5 Making Connections Efficient: Multiplexing and Compression 12l 6 Errors. Error Detection and Error Control 49 7 Local Area networks: Part 75 8 Local Area networks part l 207 9 Introduction to Metropolitan Area Networks and wide area networks 24l 0 The nternet 269 I Voice and Data Delivery Networks 307 12 Network Security 339 13 Network Design and management 373 GLOSSARY 40l INDEX 4|5 This page intentionally left blank Contents PREFACE I Introduction to Computer Networks and Data Communications The Language of Computer Network The Big Picture of Networks Communications Networks-Basic Layouts Microcomputer-to-local area network layouts Microcomputer-to-Internet layouts Local area network-to-local area network layouts Personal area network-to-workstation la yours 8 Local area network-to-metropolitan area network layouts Local area network-to-wide area network layouts Wide area network-to-wide area network layouts 10 Sensor-to-local area network layouts 10 Satellite and microwave layouts Cell phone layo Terminal/microcomputer-to-mainframe computer layouts 12 onvcrgcnce 13 Network architectures 14 The tCP/ip protocol suite 15 The OSi model 18 20 Network Layouts in Action 22 The TCP/IP Protocol Suite in action 23 S 24 Key terms 26 Review Ouestions 26 Exer 26 Thinking outside the box Hands-On Projects 27 viii Contents 2 Fundamentals of Data and Signals 29 ata and Signals nalog vs. digita 32 als of signals Converting data into signals 39 Transmitting analog data with analog signals 40 Transmitting digital data with digital signals: digital encoding schemes 40 Transmitting digital data with discrete analog signals Transmitting analog data with digital signals 48 Data codes EBCDIC ASCI 54 Unicod Data and signal conversions in Action: Two Examples 56 Summary 58 Key terms Review ouest 59 Thinking Outside the box Hands-On Projects 61 3 Conducted and Wireless media 63 Conducted Media Twisted pair wire 64 able 70 Wireless media 74 Media selection Criteria Conducted Media in Action: Two Examples 94 Wireless Media in Action: Three Examples 96 Summary ey lerris 99 Review questions 100 E 100 Thinking outside the bc Hands-On Projects 102 4 Making Connections 103 Interfacing a Computer to Peripheral Devices 104 Characteristics of interface standards 105 An early interface standard 106 Universal Serial Bus(USB) 106 Other interface standard 108 Data link connections 110 Asynchronous connections 110 Synchronous connections 112 Isochronous connections 113 Terminal-to-Mainframe Computer Connections 113 Making Computer Connections in Action 115 S 116 Key terms 117 Review ouestions 117 Exercises 718 Thinking outside the b 118 Hands-On 119

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ys022peter 原版网络经典书籍,商业管理视角。
2014-12-10
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