Which technology operates at the Data Link layer?

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Multiple Choice

Which technology operates at the Data Link layer?

Explanation:
The Data Link layer handles the local delivery of frames over a single physical link, using frame structure, MAC addressing, and basic error detection. Ethernet is the technology that defines these frames, the MAC addressing scheme, and the access method used on local networks, so it operates at this layer. The other options map to different layers: IP handles routing between networks at the Network layer; TCP provides reliable transport between endpoints at the Transport layer; DNS translates domain names at the Application layer.

The Data Link layer handles the local delivery of frames over a single physical link, using frame structure, MAC addressing, and basic error detection. Ethernet is the technology that defines these frames, the MAC addressing scheme, and the access method used on local networks, so it operates at this layer.

The other options map to different layers: IP handles routing between networks at the Network layer; TCP provides reliable transport between endpoints at the Transport layer; DNS translates domain names at the Application layer.

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