Business Data Communication Networking - ftoc.pdf
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SUMMARY TABLE OF CONTENTS
PART 1: INTRODUCTION
1
Chapter 1: Introduction to Data Communications
3
PART 2: FUNDAMENTAL CONCEPTS
39
Chapter 2: Application Layer
41
Chapter 3: Physical Layer
76
Chapter 4: Data Link Layer
117
Chapter 5: Network and Transport Layers
148
PART 3: NETWORK TECHNOLOGIES
195
Chapter 6: Local Area Networks
197
Chapter 7: Wireless Local Area Networks
232
Chapter 8: Backbone Networks
263
Chapter 9: Metropolitan and Wide Area Networks
302
Chapter 10: The Internet
339
PART 4: NETWORK MANAGEMENT
369
Chapter 11: Network Security
371
Chapter 12: Network Design
434
Chapter 13: Network Management
469
PART 5: APPENDICES
503
Appendix A: Connector Cables
505
Appendix B: Spanning Tree Protocol
516
Appendix C: IP Telephony
519
Appendix D: Cellular Technologies
522
Appendix E: TCP/IP Game
524
Appendix F: Windows Server
535
Glossary
547
Index
571
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CONTENTS
Inside an HTTP Request
53
PART 1
INTRODUCTION
Inside an HTTP Response
54
Electronic Mail
56
How E-Mail Works
57
Inside an SMTP Packet
60
Listserv Discussion Groups
61
Attachments in Multipurpose Internet Mail
Extension
62
Other Applications
63
File Transfer Protocol
CHAPTER 1
INTRODUCTION TO DATA
COMMUNICATIONS
Introduction
5
A Brief History of Communications in North
America
6
A Brief History of Information Systems
63
9
Telnet
63
Instant Messaging
65
Videoconferencing
65
Implications for Management
A Brief History of the Internet
10
Data Communications Networks
12
Components of a Network
12
68
Types of Networks
14
Summary
69
Network Models
17
Open Systems Interconnection Reference Model
17
Internet Model
19
Message Transmission Using Layers
PHYSICAL LAYER
CHAPTER 3
21
Introduction
78
Network Standards
23
The Importance of Standards
Circuits
79
Circuit Configuration
23
79
The Standards-Making Process
24
Data Flow
81
Multiplexing
82
How DSL Transmits Data
Common Standards
26
Future Trends
27
Pervasive Networking
28
The Integration of Voice, Video, and Data
88
Communication Media
88
29
Guided Media
89
Wireless Media
90
Media Selection
95
Digital Transmission of Digital Data
New Information Services
30
Implications for Management
32
Summary
32
96
Coding
97
Transmission Modes
98
Digital Transmission
99
How Ethernet Transmits Data
100
Analog Transmission of Digital Data
PART 2
FUNDAMENTAL CONCEPTS
101
CHAPTER 2
APPLICATION LAYER
Modulation
102
Capacity of a Circuit
105
How Modems Transmit Data
105
Digital Transmission of Analog Data
106
Translating from Analog to Digital
106
How Telephones Transmit Voice Data
107
How Instant Messenger Transmits Voice Data
Introduction
43
Application Architectures
43
Host-Based Architectures
45
Client-Based Architectures
45
Client-Server Architectures
46
Choosing Architectures
50
109
World Wide Web
52
How the Web Works
Implications for Management
110
Summary
52
110
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CONTENTS
CHAPTER 4
DATA LINK LAYER
PART 3
NETWORK TECHNOLOGIES
Introduction
119
Media Access Control
119
Controlled Access
120
CHAPTER 6
LOCAL AREA NETWORKS
Contention
120
Relative Performance
121
Introduction
199
Why Use a LAN?
199
Dedicated-Server versus Peer-to-Peer LANs
Error Control
121
Sources of Errors
122
Error Prevention
124
Error Detection
125
Error Correction via Retransmission
200
LAN Components
202
Network Interface Cards
202
127
Network Cables
202
Network Hubs
203
Network Operating Systems
206
Traditional Ethernet (IEEE 802.3)
Forward Error Correction
128
Error Control in Practice
129
Data Link Protocols
130
Asynchronous Transmission
132
Asynchronous File Transfer Protocols
209
Topology
209
Media Access Control
132
210
Synchronous Transmission
133
Types of Ethernet
211
Transmission Efficiency
13
Implications for Management
Switched Ethernet
213
139
Topology
214
Media Access Control
215
Performance Benefits
216
The Best Practice LAN Design
Summary
141
CHAPTER 5
NETWORK AND TRANSPORT LAYERS
216
Effective Data Rates
217
Introduction
150
Transport and Network Layer Protocols
151
Transmission Control Protocol/Internet Protocol
152
Internetwork Packet Exchange/Sequenced Packet
Exchange
Costs
219
Recommendations
219
Improving LAN Performance
221
Improving Server Performance
222
Improving Circuit Capacity
224
154
Reducing Network Demand
225
X.25
154
Transport Layer Functions
155
Linking to the Application Layer
Implications for Management
225
Summary
226
155
Packetizing
157
Addressing
159
Assigning Addresses
CHAPTER 7
WIRELESS LOCAL AREA NETWORKS
Introduction
234
WLAN Components
235
Network Interface Cards
160
Address Resolution
164
Routing
166
Types of Routing
235
Access Points
236
Radio Frequencies
168
Routing Protocols
171
237
Multicasting
174
TCP/IP Example
175
Known Addresses, Same Subnet
176
Known Addresses, Different Subnet
Wi-Fi
239
Topology
241
Media Access Control
241
Types of Wi-Fi
242
Wi-Fi as Public Internet Access
179
Unknown Addresses
180
TCP Connections
181
TCP/IP and Network Layers
244
WiMAX
244
Topology
245
Media Access Control
181
Implications for Management
184
245
Summary
Types of WiMAX
184
245
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CONTENTS
Bluetooth
246
Topology
246
Media Access Control
246
The Best Practice WLAN Design
Plain Old Telephone Service
306
ISDN
307
Dedicated Circuit Networks
308
Basic Architecture
308
T Carrier Services
313
Synchronous Optical Network
247
Effective Data Rates
247
Costs
248
Recommendations
249
Physical WLAN Design
314
Packet-Switched Networks
314
Basic Architecture
249
315
WLAN Security
251
Improving WLAN Performance
X.25
318
Asynchronous Transfer Mode
252
318
Improving Device Performance
Frame Relay
319
Switched Multimegabit Data Service
253
Improving Circuit Capacity
253
320
Reducing Network Demand
Ethernet Services
321
Virtual Private Networks
254
Implications for Management
255
322
Summary
Basic Architecture
256
322
VPN Types
324
The Best Practice MAN/WAN Design
CHAPTER 8
BACKBONE NETWORKS
325
Improving MAN/WAN Performance
329
Introduction
265
Backbone Network Components
Improving Device Performance
329
265
Improving Circuit Capacity
329
Switches
265
Routers
266
Gateways
267
A Caution
269
Backbone Network Architectures
Reducing Network Demand
330
Implications for Management
331
Summary
332
270
CHAPTER 10
THE INTERNET
Backbone Architecture Layers
270
Routed Backbone
271
Collapsed Backbone
Introduction
341
How the Internet Works
341
Basic Architecture
341
Connecting to an ISP
343
The Internet Today
345
Internet Access Technologies
274
Virtual LAN
280
Backbone Technologies
284
Asynchronous Transfer Mode
285
The Best Practice Backbone Design
289
346
Architectures
290
Effective Data Rates
290
Conversion between Protocols
DSL
347
Cable Modems
350
Fixed Wireless
352
Mobile Wireless
353
Future Technologies
291
Recommendations
291
Improving Backbone Performance
293
Improving Computer and Device Performance
354
Internet Governance
293
355
Improving Circuit Capacity
Internet 2
357
Implications for Management
294
Reducing Network Demand
294
359
Implications for Management
Summary
294
359
Summary
295
PART 4
NETWORK MANAGEMENT
CHAPTER 9
METROPOLITAN AND WIDE AREA
NETWORKS
Introduction
304
Circuit-Switched Networks
CHAPTER 11
NETWORK SECURITY
305
Introduction
Basic Architecture
373
305
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CONTENTS
Why Networks Need Security
CHAPTER 13
NETWORK MANAGEMENT
375
Types of Security Threats
375
Introduction
471
Organizing the Network Management Function
Network Controls
377
Risk Assessment
378
Develop a Control Spreadsheet
378
Identify and Document the Controls
471
The Shift to LANs and the Internet
472
Integrating LANs, WANs, and the Internet
473
383
Integrating Voice and Data Communications
473
Evaluate the Network’s Security
383
Configuration Management
475
Configuring the Network and Client Computers
475
Documenting the Configuration
Business Continuity Planning
384
Preventing Disruption, Destruction, and Disaster
385
Detecting Disruption, Destruction, and Disaster
390
Correcting Disruption, Destruction, and Disaster
391
Intrusion Prevention
394
Preventing Intrusion
395
Detecting Intrusion
418
Correcting Intrusion
422
Best Practice Recommendations
476
Performance and Fault Management
477
Network Monitoring
478
Failure Control Function
480
Performance and Failure Statistics
483
Improving Performance
485
End User Support
487
Resolving Problems
487
Providing End User Training
488
422
Cost Management
488
Sources of Costs
489
Reducing Costs
492
Implications for Management
Implications for Management
424
Summary
425
494
CHAPTER 12
NETWORK DESIGN
Summary
494
Introduction
436
The Traditional Network Design Process
436
The Building-Block Network Design Process
PART 5
APPENDICES
438
Needs Analysis
440
Geographic Scope
440
APPENDIX A
CONNECTOR CABLES
505
Application Systems
441
Network Users
443
Categorizing Network Needs
APPENDIX B
SPANNING TREE PROTOCOL
516
443
Deliverables
444
Technology Design
445
Designing Clients and Servers
APPENDIX C
IP TELEPHONY
519
445
Designing Circuits and Devices
445
APPENDIX D
CELLULAR TECHNOLOGIES
522
Network Design Tools
446
Deliverables
447
Cost Assessment
448
Request for Proposal
448
Selling the Proposal to Management
APPENDIX E
TCP/IP GAME
524
APPENDIX F
WINDOWS SERVER
535
449
Deliverables
450
Designing for Network Performance
450
GLOSSARY
547
Managed Networks
450
Network Circuits
455
Network Devices
456
Minimizing Network Traffic
INDEX
571
459
Implications for Management
463
Summary
464
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