what are tcp/ip protocols used at the application layer?
The following list shows examples of application layer protocols: 1  Standard TCP/IP services such as the ftp, tftp, and telnet commands. 2  UNIX ârâ commands, such as rlogin and rsh. 3  Name services, such as NIS and the domain name system (DNS)  Directory services 1  (LDAP) File services, such as the NFS service.