Application layer

Last updated Jan 31, 2023

• Technology
• Networking

The fourth layer in the internet protocol suite and seventh layer in the OSI model.

In the context of the TCP/IP suite, the application layer provides services to users’ applications.

Some examples of applicaation protocols in the suite at this layer include:

• the DHCP;
• the HTTP;
• DNS systems;
• the SMTP; and
• SSH.