1.2 OSI & TCP IP Models Flashcard

Front

Why must two nodes run the same protocols at each layer to communicate?

Back

To ensure they can understand and exchange data correctly.

Front

What happens when a protocol at a specific layer encapsulates the data payload received from the next-higher layer with a header?

Back

It creates a protocol data unit (PDU)

Front

Why is the application layer important for network communication?

Back

It allows software programs and network hosts to exchange data using lower-level protocols.

Front

Which of the following is NOT typically handled by the presentation layer?
File format conversion,
Character set translation,
Routing data packets,
Data encryption

Back

Routing data packets

Front

If a network application needs to ensure that a dialog is properly established, maintained, and ended between two devices, which OSI layer is primarily responsible for this?

Back

Session

Front

What is the main function of the transport layer in data communication?

Back

Managing the end-to-end exchange of data

Front

Explain why the network layer is essential for communication between different networks on the Internet.

Back

It identifies and routes data using IP addresses, allowing data to move between different networks.

Front

What does the data link layer header identify within a network segment?

Back

Source and destination hardware address

Front

How is data delivered to the Physical layer encoded before transmission?

Back

As binary numbers (0 or 1)

Front

What is the correct order of the OSI model layers from bottom to top? Options: Physical, Data Link, Network, Transport, Session, Presentation, Application

Back

Physical, Data Link, Network, Transport, Session, Presentation, Application