Introduction

Features

  • It provide services to the application software running on a computer.
  • The application Layer identifies the application running on the computer through Port Numbers.

Protocols

  • The list of some important application layer’s protocols are – Telnet, FTP, TFTP, HTTP, NFS, SMTP, POP3, DNS, DHCP, BOOTP, SNMP etc.

Telnet (Terminal Emulation Network)

FTP (File Transfer Protocol)

TFTP (Trivial File Transfer Protocol)

HTTP ( Hyper Text Transfer Protocol)

SMTP (Simple Mail Transfer Protocol)

POP3 (Post Office Protocol)

DNS (Domain Name System)

SNMP (Simple Network Management Protocol)

DHCP(Dynamic Host Configuration Protocol)

NFS (Network File System)

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