CS470A Week-3

Assignment 3: The Application Layer Introduction

Read Textbook Chapter 2 sections 2-3,2-4,2-5,2-6

Read PowerPoint Slides for Chapter 2 Sections 2-3,2-4,2-5,2-6

Preview PowerPoint Slides for Chapter 2 Section 2-7

* Answer Chapter 2 Textbook Review Questions: R11, 13, 15, 17, 18

<Week 3 Study>

Chapter 2 Application Layer 83 
2.3 File Transfer: FTP 116

2.3.1 FTP Commands and Replies 118

2.4 Electronic Mail in the Internet 118

2.4.1 SMTP 121

2.4.2 Comparison with HTTP 124

2.4.3 Mail Message Format 125

2.4.4 Mail Access Protocols 125

2.5 DNS—The Internet’s Directory Service 130

2.5.1 Services Provided by DNS 131

2.5.2 Overview of How DNS Works 133

2.5.3 DNS Records and Messages 139

2.6 Peer-to-Peer Applications 144

2.6.1 P2P File Distribution 145

2.6.2 Distributed Hash Tables (DHTs) 151