Echo is not a useful error detection techniques in computer networking because _____.
A)it is complex to use
B)it is difficult to implement
C)it is time consuming
D)errors may cancel out during the echo

Question

Quizplus · Accepted Answer

Echo is not a useful error detection technique because errors may cancel out during the echo. This is due to the fact that the echoed signal may contain the same errors as the original, making it difficult to identify which signal contains the error. Therefore, other more reliable error detection techniques such as CRC (Cyclic Redundancy Check) or checksums are used instead.

Echo Is Not a Useful Error Detection Techniques in Computer