Practical Computer Data Communications

ISBN-13: 9781468451665 / Angielski / Miękka / 2012 / 470 str.

William J. Barksdale; William J. Barksdale

Opis

Several years ago when I began consulting full time, I quickly discovered that despite three advanced academic degrees my practical industrial experience had some significant gaps. It thus was necessary initially to spend considerable (nonbillable) time collecting and organizing a great deal of essential information on the various aspects of modern data communica tions. The task was made more difficult by the highly interdisciplinary nature of the field, with the required information scattered throughout the vast international literature of telecommunications, computers, electrical engineering, military systems, mathematics, operations research, optimiza tion, speech processing, and the murky world oflegal and regulatory policy. Although there were a number of fine books and periodicals in each of these specialized disciplines, I was unable to find a single comprehensive text that covered the entire field at even a modestly attractive technical and mathematical level. After going to the trouble of organizing all this diverse material for my clients and students, it seemed rather natural to put it into book form and thus share it with those professionals working with computer data communi cations who need a comprehensive coverage of the subject at a level immediately applicable to their work and yet easily accessible for self-study. The project was facilitated by an agreeable publisher and an incredibly understanding and cooperative family, and Practical Computer Data Com munications is the result."

Spis treści

1. Introduction.- 1.1. Benefits and Objectives.- 1.2. Organization.- I: Data Communications Fundamentals.- 2. Overview of Data Communications.- 2.1. Introduction and Historical Notes.- 2.2. Network Classification.- 2.3. Network Components.- 2.4. Standards and Regulation.- References.- Suggested Readings.- True or False?.- 3. Communications Signals and Signal Processing.- 3.1. Introduction.- 3.2. Analog Signal Spectra.- 3.3. Analog Filters.- 3.4. Digital Signals and Digital Signal Processing.- 3.5. Modulation.- References.- Suggested Readings.- True or False?.- 4. The Domestic Telephone System.- 4.1. Telephone System Organization.- 4.2. The Analog FDM Carrier System.- 4.3. The Digital TDM Carrier System.- 4.4. Radio, Satellite, and Lightguide Links.- 4.5. The Basic Voice-Grade Line.- References.- Suggested Readings.- True or False?.- II: Point-to-Point Data Links.- 5. Modems and Dialers.- 5.1. Basic Data Link Considerations.- 5.2. Asynchronous FSK Modems.- 5.3. Synchronous PSK and QASK Modems.- 5.4. The Modem Line Connection.- 5.5. Automatic Dialers.- Appendix: Adaptive Digital Equalizers and Scramblers.- References.- Suggested Readings.- True or False?.- 6. The DTE/DCE Physical Interface.- 6.1. Interface Functions.- 6.2. The EIA RS-232C Interface.- 6.3. The EIA RS-449 Interface.- 6.4. Serial I/O Ports and the UART.- 6.5. Handshaking Examples.- 6.6. Null Modems and Modem Tests.- References.- Suggested Readings.- True or False?.- 7. Data Link Protocol.- 7.1. Basic Data Link Protocol Considerations.- 7.2. Character-Oriented Protocol.- 7.3. Byte-Oriented Protocol.- 7.4. Bit-Oriented Protocol.- 7.5. Comparisons and Conclusions.- Appendix: Error Checking with Parity and CRC Techniques.- References.- Suggested Readings.- True or False?.- III: Wide Area Networks.- 8. Data Communications Network Components.- 8.1. Basic Data Network Concepts.- 8.2. Conventional Multiplexers.- 8.3. Statistical Multiplexers.- 8.4. Communications Processors.- 8.5. Data Network Examples.- References.- Suggested Readings.- True or False?.- 9. Network Design Techniques.- 9.1. Network Design Considerations.- 9.2. Graph Theory and Linear Programming.- 9.3. Tree. Network Design.- 9.4. Link Capacity and Network Flow.- 9.5. Routing and Flow Control.- 9.6. Comprehensive Network Design Approaches.- Appendix: Basic Probability and Queueing Theory.- References.- Suggested Readings.- True or False?.- 10. Network Protocol and Architecture.- 10.1. Introduction and the OSI Reference Model.- 10.2. Physical Layer Protocol.- 10.3. Data Link Layer Protocol.- 10.4. Network Layer Protocol.- 10.5. High-Level Protocol.- 10.6. Proprietary Network Architectures.- 10.7. Internetwork Protocol.- Appendix: Packet Assembly and Disassembly.- References.- Suggested Readings.- True or False?.- IV: Specialized Data Networks.- 11. Local Area Networks.- 11.1. Introduction to the LAN.- 11.2. Random Access.- 11.3. Token Access.- 11.4. LAN Protocol.- 11.5. Other Access Methods and Examples.- References.- Suggested Readings.- True or False?.- 12. Network Security.- 12.1. Security Considerations.- 12.2. Security Techniques.- 12.3. Encryption.- References.- Suggested Readings.- True or False?.- 13. Future Network Trends.- 13.1. Future Networks.- 13.2. Integrated Networks.- 13.3. Conclusions.- References.- Suggested Readings.- True or False?.- Answers to True/False Questions.