CS470A Week-1

Assignment 1: Computer Networks and the Internet

Read Textbook Chapter 1 Sections 1-1,1-2,1-3

Read PowerPoint Slides for Chapter 1 Sections 1-1,1-3

Preview Chapter 1 Sections 1-4,1-5,1-6,1-7 and Chapter 2 Sections 2-1 and 2-2

* Answer Chapter 1 Textbook Review Questions: R1, 3, 5, 7, 9, 11, 12

<Week1 Study>

Chapter 1 Computer Networks and the Internet 1

1.1 What Is the Internet? 2

1.1.1 A Nuts-and-Bolts Description 2

1.1.2 A Services Description 5

1.1.3 What Is a Protocol? 7

1.2 The Network Edge 9

1.2.1 Access Networks 12

1.2.2 Physical Media 18

1.3 The Network Core 22

1.3.1 Packet Switching 22

1.3.2 Circuit Switching 27

1.3.3 A Network of Networks 32

<Week1 Preview>

1.4 Delay, Loss, and Throughput in Packet-Switched Networks 35

1.4.1 Overview of Delay in Packet-Switched Networks 35

1.4.2 Queuing Delay and Packet Loss 39

1.4.3 End-to-End Delay 42

1.4.4 Throughput in Computer Networks 44

1.5 Protocol Layers and Their Service Models 47

1.5.1 Layered Architecture 47

1.5.2 Encapsulation 53

1.6 Networks Under Attack 55

1.7 History of Computer Networking and the Internet 60

1.7.1 The Development of Packet Switching: 1961–1972 60

1.7.2 Proprietary Networks and Internetworking: 1972–1980 62

1.7.3 A Proliferation of Networks: 1980–1990 63

1.7.4 The Internet Explosion: The 1990s 64

1.7.5 The New Millennium 65

1.8 Summary 66

Chapter 2 Application Layer 83

2.1 Principles of Network Applications 84

2.1.1 Network Application Architectures 86

2.1.2 Processes Communicating 88