Applied data communications : a business-oriented approach

목차 (Table of Contents)

• CONTENTS
• INTRODUCTION = 1
• What Is Data Communications? = 1
• The Best Way to Approach Data Communications = 1
• About the Book = 2
• General Organization = 2
• Chapter Synopsis = 2
• CHAPTER 1 THE CURRENT STATE OF THE DATA COMMUNICATIONS INDUSTRY = 5
• Introduction = 5
• Date Communications as a System = 6
• Regulatory and Carriers = 7
• Divestiture and Deregulation = 7
• The Business of Deregulation and Divestiture = 9
• Politics and the Legislative and Judicial Processes = 11
• Role of Standards-Making Agencies in Data Communications = 12
• Why Are Standards Important ? = 12
• How Does the Standards-Making Process Work? = 12
• Standard Making Organizations = 12
• The OSI Seven - Layer Model = 13
• The Standards Making Process = 15
• What Do Manufacturers Have to Gain／Lose From Standardizations? = 15
• Development Precedes Standardizations = 15
• The Economic Power of Standard = 15
• What Should Uses Be Aware of Regarding Standards = 16
• Standards "Extensions" = 16
• The Jargon Jungle = 17
• Data Communications Is Business = 17
• Technology as an Enabler = 18
• The I-P-O Model = 19
• Business Demand + Available Technology = Emerging Network Services = 20
• Bandwidth = 21
• Top-Down Approach = 23
• The Top-Down Model = 23
• Technology Investment vs. Worker Productivity = 25
• Overall Information Systems Architecture = 25
• The Role of the Data Communications Professional = 26
• Training for Data Communications Professionals = 26
• Job Opportunities for the Data Communications Professional = 27
• Critical Skills for Data Communications Professionals = 27
• Chapter Summary = 28
• Featured References = 30
• CHAPTER 2 INTRODUCTORY CONCEPTS = 31
• Introduction = 32
• Getting the Bits and Pieces of Data from Here to There = 32
• Encoding = 34
• Serial vs. Parallel = 34
• Communications Software = 35
• Parallel to Serial = 36
• Serial Port = 36
• Serial Cable of Modem Cable = 36
• DTE／DCE = 37
• RS-232 Communication between PC and Modem = 37
• Monitoring RS-232 Signals = 38
• Modem = 38
• Data Transmission Over a Dial-Up Phone Line = 40
• Analog Transmission = 40
• I-P-O : A Logical Model = 42
• Modulation／Demodulation = 42
• Modulation Techniques = 42
• Carrier Wave = 43
• Amplitude Modulation = 43
• Frequency Modulation = 43
• Phases Modulation = 43
• Baud Rate vx, BPS = 44
• Asynchronous vs. Synchronous Transmission = 44
• In Sharper Focus : More Than One Bit Per Baud = 46
• Modem Standards = 47
• Hardware - Software - Media Analysis Methodology = 47
• Importance of Standards = 49
• Carrier Structure, Operation, and Services = 49
• Long Distance Carrier Operation and Services = 49
• Reenforcement of OSI Model Concepts = 49
• Dial-up Long Distance Services = 50
• Voice Grade Leased Lines = 51
• Two-Wire vs. Four - Wire = 52
• Implication of Two-vs. Four-Wire : Full-vs. Half - Duplex = 52
• Narrowband Digital Services = 52
• Broadband Digital Services = 53
• Chapter Summary = 54
• Feature References = 56
• CHAPTER 3 PERSONAL COMPUTER CONNECTIVITY = 57
• Introduction = 57
• Modem Operation and Comparative Features = 57
• Business Motivation Behind Modem Design-The Top-Down Model = 58
• Future Value of the Top-Down Model = 58
• Current Enabling Technology and Concepts : The Network Model = 59
• Faster = 59
• New Modem Standard : V. 32, 59
• In Sharper Focus : Trellis Coded Modulation and Modem Constellations = 61
• Echo Cancellation = 62
• V. 32bis = 62
• Fast Retrain = 62
• V. Fast = 62
• Beating the Standards to Market = 62
• Why V.32 and V.32bis Are Important to Business = 63
• V.42bis and MNP Class 5 Data Compression = 63
• How Data Compression Works = 63
• In Sharper Focus : Digital Transmission and DDS Services : A Business Analysis = 64
• CHEAPER = 66
• Modem Sharing = 66
• Compatibility with Older Modems = 68
• Handshaking = 68
• Hayes a Command Set = 68
• Reliable = 68
• Error Prevention = 69
• Error Detection = 70
• In Sharper Focus : Checksum Calculation : An In-Depth Look Error Correction = 74
• Backup for Leased Line Failure = 77
• Secure = 78
• Assess Control = 78
• Password Protection = 78
• Dial-Back Security = 79
• Network Security Begins with User Integrity = 79
• Encryption = 79
• Communications Software = 81
• Role of Data Communications Software = 81
• Communications Software Features and Uses = 81
• The Top-Down Approach to Communications Software Analysis = 81
• Choosing the Best Communications Software Your Use = 84
• In Sharper Focus : Network Model-Technical Features = 84
• Further Research and the Impact of Changing Technology = 94
• Non-LAN PC Connectivity = 94
• Business Perspective of Peripheral Sharing = 96
• Business Activities of Peripheral Sharing = 96
• Business Analysis Questions Yield Technical Requirements = 97
• Technology Analysis Grid Maps Requirements to Solutions = 97
• In Sharper Focus : Technical Features vs. Current Technology = 98
• Chapter Summary = 106
• Featured References = 109
• Case Study = 110
• CHAPTER 4 LOCAL AREA NETWORKS(LANS) AND LAN A LOOK - ALIKES = 113
• An Overall Roadmap to Networking in Chapter 3-9 = 114
• Business Needs-The Underlying Motivation = 116
• Business Activities Should Support Business Needs = 117
• Role of the Network Analyst as Intermediary = 118
• Business Analysis Questions Dig Deeper = 118
• User Issues = 119
• Budget Reality = 120
• Local Communication = 120
• Resource Sharing = 120
• Filesharing : Application Sharing = 121
• Distributed Data Access = 121
• Extended Communications = 121
• LAN Management and Administration = 122
• Accurate and Complete Budgets Are a Must = 122
• Anticipate Growth Is Key = 122
• Network Applications : What Can a LAN Do for you? = 122
• Network Printing = 123
• Network Printing Grows in Demand and Sophistication = 124
• Network Backup = 124
• Network Management = 127
• Network Security = 129
• In Sharper Focus ; Other Network Applications = 130
• Network Database Considerations = 132
• Data Layer Analysis Questions = 132
• File Sever Databases vs. Database Server Databases = 133
• The Language of Database Requests = 133
• In Sharper Focus : Key Database Attributes = 134
• LANs and LAN Lookalikes = 139
• Printer Sharing Networks = 141
• File Transfer Software = 142
• In Sharper Focus : Device Drivers and Virtual Drives = 144
• Zero Slot LANs = 145
• Similarities Among the Four Related Technologies = 145
• Software Zero Slot LANS vs. File Transfer Software = 145
• Hardware Zero-Slot LANs vs. Data Switches = 146
• Zero―Slot LANs - Applications, Capabilities, Limitations = 146
• Client-Sever vs. Peer-to-Peer = 147
• DOS-Based LANs : Also Known as Peer-to-Peer LANS, Low Cost LANs, Alternate LANS = 149
• In Sharper Focus : Expanability／Upgradability = 151
• Fully Integrated LANs = 155
• Applications, Functionality, Characteristics = 155
• Impressive Interoperability = 156
• Fast, Reliable Performance = 157
• LAN Administration and Security = 157
• Relationship of Physical Network Design to Logical Network Design = 158
• Chapter Summary = 159
• Featured References = 161
• Case Study = 163
• CHAPTER 5 LOCAL AREA NETWORKING TECHNOLOGY = 166
• Introduction = 167
• A Review of the Top-Down Model's Role in Technology Analysis = 167
• The Technology Layer = 167
• How Do All These Choices Fit Together ? = 167
• A Roadmap of Local Area Network Technology Choices = 168
• A Networking Technology Analysis Model = 169
• Application Choices = 170
• Architecture Choice Revisited : Peer-to-Peer vs, Client to Server = 170
• Servers Come in Many Flavors = 171
• Software Choices = 173
• Operating Systems and Network Operating Systems = 173
• Operating System Analysis Question = 173
• DOS-A Single User Heritage = 174
• OS／2-Multitasking from the Start = 174
• UNIX-Its Multiuser Minicomputer Heritage Shows = 175
• Operating System／Network Operating System Options = 176
• NETBIOS, The Redirector and the SMB Server = 177
• In Sharper Focus : Tracing Software Communications from Client to Server = 181
• Adapter Card Driver Choices = 183
• In Sharper Focus : Open Standard for Network Adapter Card Drivers = 183
• Network Choices = 185
• Access Methodology Choices = 185
• Two Flavors of Access Control : CSMA／CD and Token Passing = 185
• The MAC Sublayer and the OSI Reference Model = 186
• Access Methodologies×Network Topologies, Network Architecture = 187
• Logical and Physical Topology Choices = 187
• Network Architecture Choices = 191
• Impact of Network Architecture Choices = 191
• The Big Two : Ethernet and Token Ring = 191
• In Sharper Focus : Active MAUs = 193
• FDDI and CDDI : The Fure ? = 194
• CDDI = 197
• Hardware Choices = 198
• Network Adapter Card Choices = 198
• Keepers of the MAC-Layer Protocol = 198
• In Sharper Focus : What Are the Differentiating Factors between Adapter Cards? = 200
• Future Trends in Network Adapter Cards = 204
• The Positive and Negative Aspects of Network Monitoring = 204
• Terminal Emulation on the NIC Chip = 205
• Wiring Center = 206
• Wiring Centers Technology Analysis = 208
• In Sharper Focus : Future Trends in Wiring Centers = 211
• Media Choices = 212
• Three Varieties of Wireless Transmission = 217
• Wiring System Choices = 219
• Chapter Summary = 221
• Featured References = 224
• Case Study = 225
• CHAPTER 6 CONNECTING LANS : INTER-NETWORKING = 228
• Introduction = 229
• Internetworking Category 1 : Dialing Into and Out of the LAN = 230
• Business Uses of Remote Computing = 230
• LAN Dial-In／Dial-Out Design Methodology = 230
• Needs Analysis : What Do We Want to Do Once We've Connected? = 230
• Physical Topology = 231
• Logical Topology = 231
• Technology = 231
• Access Point 1 : Remote PC to Local LAN - Attached PC = 232
• Remote Control Software = 233
• Utilizing LAN - Attached Resources = 234
• Access point 2 : Communications Server = 235
• Access point 3 : LAN Modem or Dial-in Servers = 235
• Communications Severs : Centralized Access, Processing, and Control = 236
• Communications Server's Role in the LAN = 237
• Communications Sever's Role in the LAN = 237
• Communications Servers Comparative Features = 239
• In Sharper Focus : Dialing out from the LAN = 241
• Internetworking Category 2 : LAN-to-LAN Connections = 244
• The OSI Model and Internetworking Devices = 245
• Repeater : Layer 1 - The Physical Layer = 245
• Bridges : Layer 2 - The Data Link