NF: Unit 3 Review

Which layer of the OSI model is responsible for translating data formats between a network service and an application?

• Application layer

• Presentation layer

• Session layer

• Transport layer

What does the 'P' in the OSI model mnemonic stand for?

• Physical

• Data Link

• Presentation

• Application

Which layer of the OSI model is responsible for data presentation?

• Presentation

• Application

• Session

• Transport

What is the function of the Data Link layer in the OSI model?

• Error detection and correction

• Routing data packets

• Data encryption

• Interface for end-user processes

Which of the following devices is used to repeat signals in Layer 1?

• Modem

• Transceiver

• Repeater

• Switch

Which of the following is NOT a function of the physical layer?

• Transmitting bits

• Managing data encryption

• Using cables for data transmission

• Employing wireless media

What is the primary function of the Data Link layer?

• Transfers data between nodes on the same logical segment using hardware addresses

• Encrypts data for secure transmission

• Routes data between different networks

• Manages user sessions and connections

Which of the following is NOT an example of a Data Link layer device?

• NIC

• Bridge

• Switch

• Router

What type of addresses does the Data Link layer use to transfer data?

• IP addresses

• MAC addresses

• Domain names

• Port numbers

Which device is used to connect multiple hosts in a network at the Data Link layer?

• Router

• Switch

• Firewall

• Modem