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E2E03

How is Forward Error Correction implemented?

Select	Answer
A	By transmitting blocks of 3 data characters from the sending station to the receiving station, which the receiving station acknowledges
B	By varying the frequency shift of the transmitted signal according to a predefined algorithm
C	By transmitting extra data that may be used to detect and correct transmission errors
D	By transmitting a special FEC algorithm which the receiving station uses for data validation

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