Unit 1 Computer Network Basics 1
Section A Introduction to Computer Networks 1
Notes 5
New Words and Phrases 5
Computer Terminologies 7
Exercises 8
Extending Your Reading 9
参考译文 9
Section B Reference Models 12
Notes 17
New Words and Phrases 17
Computer Terminologies 18
Exercises 18
Extending Your Reading 19
参考译文 19
Unit 2 The Physical Layer 24
Section A Data Communication Basis 24
Notes 26
New Words and Phrases 26
Computer Terminologies 27
Exercises 27
Extending Your Reading 28
参考译文 28
Section B Transmission Media 30
Notes 33
New Words and Phrases 33
Computer Terminologies 34
Exercises 35
Extending Your Reading 36
参考译文 36
Section C Circuit Switching and Packet Switching 39
Notes 40
New Words and Phrases 40
Computer Terminologies 40
Exercises 40
Extending Your Reading 41
参考译文 41
Unit 3 The Data Link Layer 43
Section A Error Detection and Correction 43
Notes 45
New Words and Phrases 45
Computer Terminologies 46
Exercises 46
Extending Your Reading 47
参考译文 47
Section B Example Data Link Protocols 49
Notes 51
New Words and Phrases 52
Computer Terminologies 52
Exercises 52
Extending Your Reading 53
参考译文 53
Section C Ethernet and Wireless LANs 55
Notes 58
New Words and Phrases 58
Computer Terminologies 59
Exercises 59
Extending Your Reading 60
参考译文 60
Section D Network Interconnection Devices 63
Notes 65
New Words and Phrases 66
Computer Terminologies 66
Exercises 66
Extending Your Reading 67
参考译文 67
Unit 4 The Network Layer 69
Section A Routing Algorithms 69
Notes 72
New Words and Phrases 73
Computer Terminologies 73
Exercises 73
Extending Your Reading 74
参考译文 74
Section B The IPv4 Protocol 77
Notes 81
New Words and Phrases 81
Computer Terminologies 82
Exercises 82
Extending Your Reading 83
参考译文 83
Section C Internet Control Protocols 87
Notes 90
New Words and Phrases 90
Computer Terminologies 90
Exercises 91
Extending Your Reading 91
参考译文 92
Section D IPv6 Packet Format 94
Notes 97
New Words and Phrases 97
Computer Terminologies 97
Exercises 98
Extending Your Reading 98
参考译文 98
Unit 5 The Transport Layer 101
Section A The Transport Service and UDP 101
Notes 104
New Words and Phrases 104
Computer Terminologies 105
Exercises 105
Extending Your Reading 105
参考译文 106
Section B TCP and its Congestion Control 108
Notes 112
New Words and Phrases 112
Computer Terminologies 113
Exercises 113
Extending Your Reading 113
参考译文 114
Unit 6 The Application Layer 117
Section A Network Applications 117
Notes 121
New Words and Phrases 121
Computer Terminologies 121
Exercises 122
Extending Your Reading 122
参考译文 123
Section B Network Software 126
Notes 131
New Words and Phrases 131
Computer Terminologies 132
Exercises 132
Extending Your Reading 133
参考译文 133
Unit 7 Network Security 138
Network Security 138
Notes 142
New Words and Phrases 142
Computer Terminologies 143
Exercises 143
Extending Your Reading 144
参考译文 144
Unit 8 The New Network Technology 148
New Network Technologies 148
Notes 152
New Words and Phrases 152
Computer Terminologies 153
Exercises 153
Extending Your Reading 153
参考译文 154
Unit 9 Translation Skills of Computer Network English 157
计算机网络英语翻译技巧 157
附录 部分习题答案 170
参考文献 171