計(jì)算機(jī)網(wǎng)絡(luò)

前言

20世紀(jì)末，以計(jì)算機(jī)和通信技術(shù)為代表的信息科學(xué)和技術(shù)對(duì)世界經(jīng)濟(jì)、科技、軍事、教育和文化等產(chǎn)生了深刻影響。信息科學(xué)技術(shù)的迅速普及和應(yīng)用，帶動(dòng)了世界范圍信息產(chǎn)業(yè)的蓬勃發(fā)展，為許多國(guó)家?guī)砹素S厚的回報(bào)。進(jìn)入21世紀(jì)，尤其隨著我國(guó)加入WTO，信息產(chǎn)業(yè)的國(guó)際競(jìng)爭(zhēng)將更加激烈。我國(guó)信息產(chǎn)業(yè)雖然在20世紀(jì)末取得了迅猛發(fā)展，但與發(fā)達(dá)國(guó)家相比，甚至與印度、愛爾蘭等國(guó)家相比，還有很大差距。國(guó)家信息化的發(fā)展速度和信息產(chǎn)業(yè)的國(guó)際競(jìng)爭(zhēng)能力，最終都將取決于信息科學(xué)技術(shù)人才的質(zhì)量和數(shù)量。引進(jìn)國(guó)外信息科學(xué)和技術(shù)優(yōu)秀教材，在有條件的學(xué)校推動(dòng)開展英語授課或雙語教學(xué)，是教育部為加快培養(yǎng)大批高質(zhì)量的信息技術(shù)人才采取的一項(xiàng)重要舉措。為此，教育部要求由高等教育出版社首先開展信息科學(xué)和技術(shù)教材的引進(jìn)試點(diǎn)工作。同時(shí)提出了兩點(diǎn)要求，一是要高水平，二是要低價(jià)格。在高等教育出版社和信息科學(xué)技術(shù)引進(jìn)教材專家組的努力下，經(jīng)過比較短的時(shí)間，第一批引進(jìn)的20多種教材已經(jīng)陸續(xù)出版。這套教材出版后受到了廣泛的好評(píng)，其中有不少是世界信息科學(xué)技術(shù)領(lǐng)域著名專家、教授的經(jīng)典之作和反映信息科學(xué)技術(shù)最新進(jìn)展的優(yōu)秀作品，代表了目前世界信息科學(xué)技術(shù)教育的一流水平，而且價(jià)格也是最優(yōu)惠的，與國(guó)內(nèi)同類自編教材相當(dāng)。

內(nèi)容概要

為此，教育部要求由高等教育出版社首先開展信息科學(xué)和技術(shù)教材的引進(jìn)試點(diǎn)工作。同時(shí)提出了兩點(diǎn)要求，一是要高水平，二是要低價(jià)格。在高等教育出版社和信息科學(xué)技術(shù)引進(jìn)教材專家組的努力下，經(jīng)過比較短的時(shí)間，第一批引進(jìn)的20多種教材已經(jīng)陸續(xù)出版。這套教材出版后受到了廣泛的好評(píng)，其中有不少是世界信息科學(xué)技術(shù)領(lǐng)域著名專家、教授的經(jīng)典之作和反映信息科學(xué)技術(shù)最新進(jìn)展的優(yōu)秀作品，代表了目前世界信息科學(xué)技術(shù)教育的一流水平，而且價(jià)格也是最優(yōu)惠的，與國(guó)內(nèi)同類自編教材相當(dāng)。    這項(xiàng)教材引進(jìn)工作是在教育部高等教育司和高教社的共同組織下，由國(guó)內(nèi)信息科學(xué)技術(shù)領(lǐng)域的專家、教授廣泛參與，在對(duì)大量國(guó)外教材進(jìn)行多次遴選的基礎(chǔ)上，參考了國(guó)內(nèi)和國(guó)外著名大學(xué)相關(guān)專業(yè)的課程設(shè)置進(jìn)行系統(tǒng)引進(jìn)的。其中，John Wiley公司出版的貝爾實(shí)驗(yàn)室信息科學(xué)研究中心副總裁Silberschatz教授的經(jīng)典著作《操作系統(tǒng)概念》，是我們經(jīng)過反復(fù)談判，做了很多努力才得以引進(jìn)的。William Stallings先生曾編寫了在美國(guó)深受歡迎的信息科學(xué)技術(shù)系列教材，其中有多種教材獲得過美國(guó)教材和學(xué)術(shù)著作者協(xié)會(huì)頒發(fā)的計(jì)算機(jī)科學(xué)與工程教材獎(jiǎng)，這批引進(jìn)教材中就有他的兩本著作。    希望本書通過這些舉措，能在較短的時(shí)間，為我國(guó)培養(yǎng)一大批高質(zhì)量的信息技術(shù)人才，提高我國(guó)軟件人才的國(guó)際競(jìng)爭(zhēng)力，促進(jìn)我國(guó)信息產(chǎn)業(yè)的快速發(fā)展，加快推動(dòng)國(guó)家信息化進(jìn)程，進(jìn)而帶動(dòng)整個(gè)國(guó)民經(jīng)濟(jì)的跨越式發(fā)展。

作者簡(jiǎn)介

作者：（美國(guó)）羅斯（Ross K.W.）?。绹?guó)）庫(kù)羅斯（Kurose J.F.） Jim Kuroseis a professor of Computer Science at the University of Massachusetts, Amherst.Dr. Kurose has received a number of recognitions for his educational activities including Outstanding Teacher Awards from the National Technological University （eight times）, the University of Massachusetts, and the Northeast Association of Graduate Schools. He received the IEEE Taylor Booth Education Medal and was recognized for his leadership of Massachusetts' Commonwealth Information Technology Initiative. He has been the recipient of a GE Fellowship, an IBM Faculty Development Award, and a lilly Teaching Fellowship.Dr. Kurose is a former Editor-in-Chief of the IEEE Transactions on Communications and of the IEEE/ACM Transactions on Networking. He has been active in the program committees for IEEE Infocom, ACM SIGCOMM, and ACM SIGMETRICS for a number of years and has served as Technical Program Co-Chair for those conferences. He is a Fellow of the IEEE and the ACM. His research interests include netork protocols and architecture, network measurement, sensor networks, multimedia communication, and modeling and performance evaluation. He holds a Ph.D.in Computer Science from Columbia University.Keith Ross is the Leornard J. Shustek Professor in Computer Science at Polytechnic University in Brooklyn. From 1985 to 1998 he was a professor in the Department of Systems Engineering at the University of Pennsylvania. From 1998 to 2003 he was a professor in the Multimedia Communications Department at Institute Eurecom in France. Keith Ross is also the principal founder and original CEO of Wimba, which develops voice-over-IP technologies for e-learning markets.Dr. Ross has published numerous research papers and has written two books. He has served on editorial boards on many major journals, including IEEE/ACM Transactions on Networking, and on numerous programming committees, including ACM SIGCOMM and IEEE Infocom. He has supervised 15 Ph.D. theses. His research and teaching interests include P2P systems, multimedia netvvorking, network protocols, and stochastic networks. He received his Ph.D. from the University of Michigan.

書籍目錄

Chapter 1 Computer Networks and the Internet　1.1   What Is the Internet?　　1.1.1  A Nuts-and-Bolts Description　　1.1.2  A Service Description　　1.1.3  What Is a Protocol?　1.2   The Network Edge　　1.2.1   End Systems, Clients, and Servers　　1.2.2  Connectionless and Connection-Oriented Service　1.3   The Network Core　　1.3.1  Circuit Switching and Packet Switching　　1.3.2  Packet-Switched Networks: Datagram Networks and Virtual-Circuit Networks　1.4   Access Networks and Physical Media　　1.4.1  Access Networks　　1.4.2  Physical Media　1.5   ISPs and Internet Backbones　1.6   Delay and Loss in Packet-Switched Networks　　1.6.1  Types of Delay　　1.6.2  "Queuing Delay and Packet Loss　　1.6.3  Delay and Routes in the Internet　1.7   Protocol Layers and Their Service Models　　1.7.1  Layered Architecture　　1.7.2  Layers, Messages, Segments, Datagrarns, and Frames　1.8   History of Computer Networking and the Internet　　1.8.1  The Development of Packet Switching: 1961-1972　　1.8.2  Proprietary Networks and Internetworking: 1972-1980　　1.8.3  A Proliferation of Networks: 1980-1990　　1.8.4  The Internet Explosion: The 1990s　　1.8.5  Recent Developments　1.9   Summary　　Road-Mapping This Book　　Homework Problems and Questions　　　Problems　　　Discussion Questions　　　Ethereal Lab 1　　Interview: Leonard KleinrockChapter 2 Application Layer　2.1   Principles of Network Applications　　2.1.1   Network Application Architectures　　2.1.2  Processes Communicating　　2.1.3  Application-Layer Protocols　　2.1.4  What Services Does an Application Need?　　2.1.5   Services Provided by the Internet Transport Protocols　　2.1.6  Network Applications Covered in This Book　2.2   The Web and HTTP　　2.2.1  Overview of HTTP　　2.2.2  Nonpersistent and Persistent Connections　　2.2.3  HTTP Message Format　　2.2.4  User-Server Interaction: Cookies　　2.2.5  HTTP Content　　2.2.6  Web Caching　　2.2.7  The Conditional GET　2.3   File Transfer: FTP　　2.3.1  FTP Commands and Replies　2.4   Electronic Mail in the Internet　　2.4.1   SMTP　　2.4.2  Comparison with　　2.4.3  Mail Message Formats and MIME　　2.4.4  Mail Access Protocols　2.5   DNS--The Internet's Directory Service　　2.5.1   Services Provided by DNS　　2.5.2  Overview of How DNS Works　　2.5.3  DNS Records and Messages　2.6   P2P File Sharing　2.7   Socket Programming with TCP　　2.7.1   Socket Programming with TCP　2.8   Socket Programming with UDP　2.9   Building a Simple Web Server　　2.9.1  Web Server Functions　2.10 Summary　　Homework Problems and Questions    ……Chapter 3　Transport LayerChapter 4  The Network LayerChapter 5  The Link Layer and Local Area NetworksChapter 6  Wireless and Mobile NetworksChapter 7  Multimedia NetworkingChapter 8  Security in Computer NetworksChapter 9  Network ManagementReferencesIndex

章節(jié)摘錄

插圖：RTP Packet Header FieldsAs shown in Figure 7.9, the four main RTP packet header fields are the payload type, sequence number, timestamp, and the source identifier fields.The payload-type field in the RTP packet is 7 bits long. For an audio stream, the payload-type field is used to indicate the type of audio encoding （for example, PCM, adaptive delta modulation, linear predictive encoding） that is being used. If a sender decides to change the encoding in the middle of a session, the sender can inform the receiver of the change through this payload-type field. The sender may want to change the encoding in order to increase the audio quality or to decrease the RTP stream bit rate. Table 7.1 lists some of the audio payload types currently supported by RTP.For a video stream, the payload type is used to indicate the type of video encoding （for example, motion JPEG, MPEG l, MPEG 2, H.261）. Again, the sender can change video encoding on the fly during a session. Table 7.2 lists some of the video payload types currently supported by RTP. The other important fields are the following.

媒體關(guān)注與評(píng)論

"This book is a gem——Kurose and Ross take a flesh top-down approach and get the complex networking story right！ It will be invaluable for students and professionals alike."    ——Leonard Kleinrock, University of CaliJornia, Los Angeles"I think Kurose/Ross communicates to students well, and also keeps the focus on the essential concepts and principles that truly matter in the long run."    ——hivkumar Kalyanaraman, Rensselaer Polytechnic Institute"This book is an invaluable resource for networking professionals who need to understand how the Intemet actually works. The author's approach to explaining the technology underlying so many of today's communication services is both engaging and easy to understand. This is a must-have book."    ——Jennifer Rexford, IP Network Management and Performance, A T& T Labs

編輯推薦

《計(jì)算機(jī)網(wǎng)絡(luò):自頂向下方法與Internet特色(第3版影印版)》：教育部高等教育司推薦國(guó)外優(yōu)秀信息科學(xué)與技術(shù)系列教學(xué)用書。一流的品質(zhì)，優(yōu)惠的價(jià)格。本套教學(xué)用書的特點(diǎn)：權(quán)威性——教育部高等教育司推薦、教育部高等學(xué)校信息科學(xué)與技術(shù)引進(jìn)教材專家組遴選。系統(tǒng)性——覆蓋計(jì)算機(jī)專業(yè)主干課程和非計(jì)算機(jī)專業(yè)計(jì)算機(jī)基礎(chǔ)課程。先進(jìn)性——著名計(jì)算機(jī)專家近兩年的最新著作，內(nèi)容體系先進(jìn)。經(jīng)濟(jì)性——價(jià)格與國(guó)內(nèi)自編教材相當(dāng)，是國(guó)內(nèi)引進(jìn)教材價(jià)格最低的。Revised to reflect the rapid changes in the field of networking, Computer Networking provides a top-down approach to this study by beginning with application-level protocols and then working down the protocol stack. An early emphasis is placed on application-layer paradigms and application programming interfaces to allow readers to get their "hands dirty" with protocols and networking concepts in the context of applications they will use in the industry. Networking today is much more （and far more interesting） than standards specifying message formats and protocol behaviors. Professors Kurose and Ross focus on describing emergingprinciples in a lively and engaging manner and then illustrate these principles with examples drawn from Intemet architecture.Highlights of the Third EditionContains a new chapter on wireless and mobile networking, including in-depth coverage of Wi-Fi, Mobile IP, andGSM.Offers a total of twelve labs, including six programming labs and six new Ethereal labs to provide students withhands-on networking experienceHas expanded and revised sections on peer-to-peer networking, BGP, wireless security, DNS, and more.Includes access to the Companion Web site with interactive applets, quizzes, and detailed, graphical PowerPointpresentations for every chapter.For more information, please visit www.PearsonEd.com.

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