Chapter 2:Application layer r 2.1 Principles of r 2.6 P2P file sharing network applications r 2.7 Socket programming r 2.2 Web and HTTP with TCP r 2.3 FTP r 2.8 Socket programming r 2.4 Electronic Mail with UDP SMTP,POP3,IMAP r 2.9 Building a Web r 2.5 DNS server 2:Application Layer 22: Application Layer 2 Chapter 2: Application layer r 2.1 Principles of network applications r 2.2 Web and HTTP r 2.3 FTP r 2.4 Electronic Mail v SMTP, POP3, IMAP r 2.5 DNS r 2.6 P2P file sharing r 2.7 Socket programming with TCP r 2.8 Socket programming with UDP r 2.9 Building a Web server