William Stallings. Upper Saddle River Copies of figures from the book in PDF format Data Communications and Networking for Today's Enterprise communications over long-distance networks. covers the material in the Computer Communication Networks course of the book in PDF (Adobe Acrobat ) format, and sign-up information for the book's . William Stallings. —Computer, terminal, phone, etc. • A collection of nodes and connections is a communications network. • Data routed by being switched from node to node.
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Stallings, William. Data and computer communications/William Stallings.—Tenth edition. Data Communications and Networking for Today's Enterprise 9. William Stallings Data and Computer Communications 7th Edition. 83 Pages· · data communication and networking by behrouz a. forouzan 4th edition David Evans†, Paul Gruba, Justin Zobel · Download PDF Chapter. Page. pdf. Data and Communication Network by -william stallings 5th. Pages transparency masters of figures in the book in PDF (Adobe Acrobat) format, and.
About this title Provides a clear and comprehensive survey of the whole field of data communications and a tutorial on leading-edge network technologies and protocols. Offers complete and detailed assessment of critical technical areas in data communications, wide-area networking, local area networking, and protocol design. DLC: Data transmission systems. No previous background in data communications is assumed for this book. From the Inside Flap: Preface Objectives This book attempts to provide a unified overview of the broad field of data and computer communications.
The book is intended for both an academic and a professional audience. For the professional interested in this field, the book serves as a basic reference volume and is suitable for self-study.
As a textbook, it can be used for a one-semester or two-semester course. The chapters and parts of the book are sufficiently modular to provide a great deal of flexibility in the design of courses. The following are suggestions for course design: Fundamentals of Data Communications: Parts One overview and Two data communications and Chapters 9 through 11 circuit switching, packet switching, and ATM.
Computer Networks: If the student has a basic background in data communications, then this course could cover Part One overview , Chapters 6 and 7 data communication interface and data link control , and Part Five protocols.
In addition, a more streamlined course that covers the entire book is possible by eliminating certain chapters that are not essential on a first reading. Chapters that could be optional are Chapters 3 data transmission and 4 transmission media , if the student has a basic understanding of these topics; Chapter 8 multiplexing ; Chapter 9 circuit switching ; Chapter 12 congestion control ; Chapter 16 internetworking ; and Chapter 18 network security.
Internet Services for Instructors and Students There is a Web site for this book that provides support for students and instructors. The site includes links to relevant sites, transparency masters of figures in the book, and sign-up information for the book's Internet mailing list.
An Internet mailing list has been set up so that instructors using this book can exchange information, suggestions, and questions with each other and with the author. Projects for Teaching Data and Computer Communications For many instructors, an important component of a data communications or networking course is a project or set of projects by which the student gets hands-on experience to reinforce concepts from the text.
This book provides an unparalleled degree of support for including a projects component in the course. See Appendix C for details. What's New in the Sixth Edition This sixth edition is seeing the light of day less than 15 years after the publication of the first edition. Much has happened during those years. Indeed, the pace of change, if anything, is increasing. In this new edition, I try to capture these changes while maintaining a broad and comprehensive coverage of the entire field.
To begin the process of revision, the fifth edition of this book was extensively reviewed by a number of professors who teach the subject. The result is that, in many places, the narrative has been clarified and tightened, and illustrations have been improved. Also, a number of new "field-tested" problems have been added.
Beyond these refinements to improve pedagogy and user friendliness, there have been major substantive changes throughout the book. Every chapter has been revised, new chapters have been added, and the overall organization of the book has changed.
Highlights include the following: xDSL: The term xDSL refers to a family of digital subscriber line technologies that provide high-speed access to ISDN and other wide area networks over ordinary twisted-pair lines from the network to a residential or business subscriber. Gigabit Ethernet: The discussion on Mbps Ethernet has been updated and an introduction to Gigabit Ethernet has been added.
It provides enhanced support for IP-based data traffic. Congestion control: A separate chapter is now devoted to this topic. This unified presentation clarifies the issues involved. The chapter includes expanded coverage of ATM traffic management and congestion control techniques.
IP multicasting: A new section is devoted to this important topic. Integrated and differentiated services, plus RSVP: There have been substantial developments since the publication of the fifth edition in enhancements to the Internet to support a variety of multimedia and time-sensitive traffic.
A new chapter covers integrated services, differentiated services, other issues related to quality of service QoS , and the important RSVP reservation protocol. If the size of an obstacle is on the order of the wavelength of the signal or less, scattering occurs.
An incoming signal is scattered into several weaker outgoing signals in unpredictable directions. From Figure 4.
If the outer conductor of a coaxial cable is everywhere held at ground potential, no external disturbance can reach the inner, signal-carrying, conductor. Half of that is 5, km which is comparable to the east-to-west dimension of the continental U.
While an antenna this size is impractical, the U. Defense Department has considered using large parts of Wisconsin and Michigan to make an antenna many kilometers in diameter.
Using Equation 4. The available received signal power is 20 — In addition, lack of a direct-current dc component means that ac coupling via transformer is possible. The magnitude of the effects of signal distortion and interference depend on the spectral properties of the transmitted signal. Clocking: Encoding can be used to synchronize the transmitter and receiver. Error detection: It is useful to have some error detection capability built into the physical signaling encoding scheme.
Signal interference and noise immunity: Certain codes exhibit superior performance in the presence of noise. Cost and complexity: The higher the signaling rate to achieve a given data rate, the greater the cost. Some codes require a signaling rate that is in fact greater than the actual data rate.
The data themselves are encoded as the presence or absence of a signal transition at the beginning of the bit time. A transition low to high or high to low at the beginning of a bit time denotes a binary 1 for that bit time; no transition indicates a binary 0. The binary 1 pulses must alternate in polarity. For pseudoternary, a binary 1 a is represented by the absence of a line signal, and a binary 0 by alternating positive and negative pulses.
In the Manchester code, there is a transition at the middle of each bit period; a low-to-high transition represents a 1, and a high-to-low transition represents a 0.