What are two services performed by the data link layer of the OSI model? (Choose two.)

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Question:
What are two services performed by the data link layer of the OSI model? (Choose two.)

It encrypts data packets.
It determines the path to forward packets.
It accepts Layer 3 packets and encapsulates them into frames.
It provides media access control and performs error detection.
It monitors the Layer 2 communication by building a MAC address table.

Explanation: The data link layer is responsible for the exchange of frames between nodes over a physical network media. Specifically the data link layer performs two basic services:

It accepts Layer 3 packets and encapsulates them into frames.
It provides media access control and performs error detection.

Path determination is a service provided at Layer 3. A Layer 2 switch builds a MAC address table as part of its operation, but path determination is not the service that is provided by the data link layer.

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