2.2.6 Practice Questions

Match each networking function or device on the left with its associated OSI model layer on the right.

Application layer correct answer: HTTP Presentation layer correct answer: Encapsulation Session layer correct answer: Session ID number Transport layer correct answer: Port number Network layer correct answer: Router Data Link layer correct answer: Switch Physical layer correct answer: Modem

Which of the following tasks is associated with the Session layer?

Connection establishment

What is the basic purpose of the OSI Physical layer?

Coordinate rules for sending and receiving electrical signals.

In the OSI model, which of the following functions are performed at the Application layer? (Select two.)

Correct Answer: Enabling of communication between network clients and services. Integration of network functionality into the host operating system.

In the OSI model, which of the following functions are performed at the Presentation layer? (Select two.)

Data encryption and compression Data format specifications

Which of the following are included as part of the Data Link layer specifications? (Select two.)

Data transmission between hosts Physical network device identification

Which of the following functions are performed by the OSI Transport layer? (Select three.)

End-to-end flow control Correct Answer: Reliable message delivery Correct Answer: Data segmentation and reassembly

Match each layer of the TCP/IP model on the left with the corresponding layer of the OSI model on the right. Each option on the left can be used more than once.

Presentation layer correct answer: Application Data Link layer correct answer: Network Application layer correct answer: Application Session layer correct answer: Application Network layer correct answer: Internetwork Transport layer correct answer: Transport

In the OSI model, what is the primary function of the Network layer?

Route messages between networks.

During TCP/IP communication between two network hosts, information is encapsulated on the sending host and decapsulated on the receiving host using the OSI model. Match the information format on the left with the appropriate layer of the OSI model on the right.

Transport layer correct answer: Segments Network layer correct answer: Packets Data Link layer correct answer: Frames Physical layer correct answer: Bits