26What are two services provided by the OSI network layer? (Choose two.)encapsulating PDUs from the transport layerrouting packets toward the destinationcollision detectionperforming error detectionplacement of frames on the media
Question
26What are two services provided by the OSI network layer? (Choose two.)encapsulating PDUs from the transport layerrouting packets toward the destinationcollision detectionperforming error detectionplacement of frames on the media
Solution
The two services provided by the OSI network layer are:
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Encapsulating PDUs from the transport layer: The network layer receives the transport layer PDUs (Protocol Data Units), also known as segments, and adds a network layer header to each one, turning them into packets. This process is known as encapsulation.
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Routing packets toward the destination: The network layer is responsible for determining the best path for data to travel from the source to the destination. This process is known as routing. The network layer uses logical addresses (like IP addresses) to route packets from the source to the destination.
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