Telnet is similar to HTTP and FTP in that all three use the TCP protocol for connection-oriented
Telnet is an application layer protocol (Layer 7). Its functionality is similar to any of the layer 7 protocols, including DHCP, DNS, FTP, etc.
TELNET operates at Application Layer in TCP/IP Model. It's an Application to establish a connection to TCP Port Number 23, where a Telnet server application (telnetd) is listening.
http telnet
You are probably asking about telnet protocol, which is a layer 7 application layer protocol.
TELNET Application layer services like Network Virtual Terminal are used to realise this. TELNET is the protocol used. Refer - Data Communication and Networking by Forouzan
Normally both using transport layer for communication but they are using tcp protocol which uses application layer so application layer is correct answer..
1.application: e-mail application-layer protocol: SMTP [RFC 2821] 2.application: WEB application-layer protocol: HTTP [RFC 2616] 3.application: streaming multimedia application-layer protocol: HTTP (eg Youtobe), RTP [RFC 1889] 4.application:file transfer application-layer protocol: FTP [RFC 959] 5.application: remote terminal access application-layer protocol: Tenet [RFC 854]
DNS is an application layer protocol. The application layer of the OSI model is the layer closest to the user and provides network services to the applications of the user. Examples of protocols that operate at the application layer are: DNS, FTP, TFTP, SNMP, TELNET, RLOGIN, SMTP, MIME, NFS, FINGER, BOOTP and SMB.
TCP port 23
Telnet- is an application layer program that enables a user to remotely login and use resources of a remote computer.
Application Layer
FTP (File Transfer Protocol) is an application layer, or Layer 7, protocol.