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Frame relay provides error detection at the ______

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Frame relay provides error detection at the ______

(a) physical layer

(b) data link layer

(c) network layer

(d) transport layer

The question was asked in an interview for internship.

Question is from Frame Relay topic in portion Frame Relay of Computer Network

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The correct option is (b) data link layer

The best I can explain: Frame relay provides error detection using CRC in the data link layer. The transport layer then provides the error correction features if an error is detected.

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