1.1 OSI Layers

Which protocol data unit (PDU) is used to describe data at the Physical layer?

• Datagrams

• Bits

• Frames

• Segments

Which layer is responsible for compression and decompression?

• Application layer

• Physical layer

• Session layer

• Presentation layer

Which three upper layers operate together?

• Application, Presentation, and Session

• Presentation, Session, and Transport

• Transport, Session, and Application

• Network, Data Link, and Physical

As information travels down the network stack from the Application layer to the Physical layer, what happens?

• Datagrams

• PDUs

• Encapsulation

• Decapsulation

Which layer handles the formatting of application data so that it will be readable by the destination system?

• Application
• Session
• Data Link
• Presentation
• Transport

Which is used to determine the best path to a destination network?

• Acknowledgment

• Network address

• Interface

• Metric

Which layer is responsible for creating a virtual circuit?

• Presentation

• Session

• Transport

• Network

Which sublayer of the Data Link OSI layer is responsible for identifying Network layer protocols and encapsulating them?

• MAC

• LLC

• Data

• Link Session

Which layer of the OSI is responsible for dialogue control of applications?

• Application layer

• Physical layer

• Session layer

• Network layer

Which OSI layer is responsible for logical addressing?

• Transport layer

• Network layer

• Application layer

• Data Link layer