OSI Model Exam Review

What layer is application?

• 1

• 3

• 5

• 7

What layer is presentation?

• 6

• 4

• 2

• 1

What layer is session?

• 1

• 3

• 5

• 7

What layer is transport?

• 2

• 4

• 6

• 1

What layer is Network?

• 1

• 3

• 5

• 6

What layer is data link?

• 2

• 4

• 6

• 7

What layer is physcial?

• 7

• 5

• 3

• 1

What is the function of layer 7, application?

• formats data and defines how things will appear to the user

• handles the end user interface to the network with process to process communication (example: email)

• manages sessions between application processes on different hosts

• responsible for determining the best path for packets traveling

  through the network

What is the function of layer 6, presentation?

• handles compression, encryption, character encoding

• provides a user interface for network communication (example: email)

• manages sessions between application processes on different hosts

• responsible for determining the best path for packets traveling

  through the network

What is the function of layer 5, session?

• formats data and defines how things will appear to the user

• provides a user interface for network communication (example: email)

• manages sessions between application processes on different hosts

• responsible for determining the best path for packets traveling

  through the network