______ is a process of adding a header and a trailer to information.

• Protocol

• Encapsulation

• Encryption

• Modularization

OSI layer consists of ______ layer.

• 5

• 6

• 7

• 8

TCP/IP reference model has _____ layers.

• 4

• 5

• 6

• 7

The process by which the header and trailer information is removed from a data packed is known as _________.

• encapsulation.

• decapsulation.

• modularization.

• presentation

Bits data are being sent at ________.

• application layer.

• transport layer.

• network layer.

• physical layer.

_______ layer provides user interface and functions that needed by users.

• Network

• Application

• Transport

• Session

At which layer do router devices operate?

• Network

• Transport

• Data Link

• Presentation

Encapsulation occurs at all of the layers. True or False?

• True

• False

The Session layer communicates with which other layers?

• Network and Data Link

• Application and Presentation

• Transport and Presentation

• Data Link and Presentation

What is the name of the layer that selects the best path for data to be transmitted?

• Application

• Data Link

• Network

• Session