Protocol

DICT -
DNS - Application Layer
FILE -
FTP - Application Layer
FTPS -
GOPHER -
HTTP -
HTTPS -
IMAP -
IMAPS -
LDAP -
LDAPS -
POP3 -
POP3S -
RTMP -
RTSP -
SCP -
SFTP -
SMTP -  Application Layer
SMTPS -
SIP - Application Layer
TELNET - Application Layer
TFTP -


TELNET - TELNET is a two-way communication protocol which allows connecting to a remote machine and run applications on it.

FTP - FTP(File Transfer Protocol) is a protocol, that allows File transfer amongst computer users connected over a network. It is reliable, simple and efficient.

SMTP - SMTP(Simple Mail Transport Protocol) is a protocol, which is used to transport electronic mail between a source and destination, directed via a route.

DNS - DNS(Domain Name Server) resolves an IP address into a textual address for Hosts connected over a network.

Note:
Please refer Computer Networks which talks in detail about TCP/IP and OSI layered architecture and bounded protocols. Also, it talk about merits and demerits of both approaches.
http://www.studytonight.com/computer-networks/