Question

The probability that a single bit will be in error on a typical public telephone line using 4800 bps modem is 10 to the power -3. If no error detection mechanism is used, the residual error rate for a communication line using 9-bit frames is approximately equal to

A. 0.003
B. 0.009
C. 0.991
D. 0.999

Answer 1

@Jesstho.-. i think its b

Answer 2

Yes, you're right.