Documents Protocols: DNS, TELNET, e-Mail, FTP, WWW, NNTP, SNMP, NTP etc. Lecture #21: Application Layer.

Slide 1 Protocols: DNS, TELNET, e-Mail, FTP, WWW, NNTP, SNMP, NTP etc. Lecture #21: Application Layer Slide 2 2 TCP/IP Application Layer User application 1... Encryption/…