| Layer | Example |
|---|---|
| Application Layer | Telnet, SSH, FTP, SMTP, HTTP, NFS, SNMP |
| Presentation Layer | JPG, PNG, GIF, MPEG, ASCII, CSS, HTML |
| Session Layer | RPC, SCP, TLS |
| Transport Layer | TCP, UDP |
| Network Layer | IP V4, IP V6, ICMP, IPsec |
| Data Link Layer | MAC, PPP, ATM, HDLC, Frame Relay |
| Physical Layer | Ethernet, ISDN, USB, DSL |
What is Telnet?
a network protocol that allows a user on one computer to log into another computer that is part of the same network.
What is SSH?
SSH, also known as Secure Shell or Secure Socket Shell, is a network protocol that gives users, particularly system administrators, a secure way to access a computer over an unsecured network.
What is FTP?
The File Transfer Protocol (FTP) is a standard communication protocol used for the transfer of computer files from a server to a client on a computer network.
What is SMTP?
Simple Mail Transfer Protocol.