CompTIA Network+ Network+ OSI Model Layers and Functions 2

Question 1

A network technician needs to configure a device that operates at Layer 3 and makes forwarding decisions based on logical addressing. Which device should they configure?

Accepted Answer

Router

Answer

Switch

Answer

Hub

Answer

Bridge

Question 2

Which OSI layer is responsible for converting data into a format that the application layer can understand, including encryption and compression?

Accepted Answer

Presentation layer

Answer

Session layer

Answer

Application layer

Answer

Transport layer

Question 3

A packet is traveling from a source host to a destination host. At which OSI layer does the packet's source and destination MAC address get added?

Accepted Answer

Data Link layer

Answer

Network layer

Answer

Physical layer

Answer

Transport layer

Question 4

Which of the following protocols operates at the Session layer of the OSI model?

Accepted Answer

NetBIOS

Answer

TCP

Answer

IP

Answer

Ethernet

Question 5

When data travels down the OSI model from the Application layer to the Physical layer, what is this process called?

Accepted Answer

Encapsulation

Answer

Decapsulation

Answer

Multiplexing

Answer

Segmentation

Question 6

A switch uses a MAC address table to forward frames. At which OSI layer does a switch primarily operate?

Accepted Answer

Layer 2

Answer

Layer 1

Answer

Layer 3

Answer

Layer 4

Question 7

Which OSI layer is responsible for end-to-end communication, flow control, and error recovery between two hosts?

Accepted Answer

Transport layer

Answer

Network layer

Answer

Data Link layer

Answer

Session layer