a
b
100

This is the lowest layer of the OSI model responsible for transmitting raw bits over a medium.

What is the Physical Layer?

100

This layer establishes, manages, and terminates communication sessions.

What is the Session Layer?

200

This OSI layer is responsible for MAC addressing and error detection.

What is the Data Link Layer?

200

Data encryption and compression are functions of this OSI layer.

What is the Presentation Layer?

300

Routers primarily operate at this OSI layer.

What is the Network Layer?

300

HTTP, FTP, SMTP, and DNS operate at this layer.

What is the Application Layer?

400

This layer is responsible for end-to-end communication and reliability.

What is the Transport Layer?

400

The OSI model consists of this many layers.

What are 7 layers?

500

TCP and UDP are protocols associated with this OSI layer.

What is the Transport Layer?

500

The process of adding headers as data moves down the OSI model is called this.

What is Encapsulation?