What do you mean by Error Detection

Question

What do you mean by Error Detection? Write down its methods?

Answer 1

Data can be corrupted throughout transmission. For reliable communication errors should be deducted and corrected. Error Detection employs the concept of redundancy that means adding additional bits for detecting errors at the destination. The common Error Detection techniques are:

a) Vertical Redundancy Check (VRC)

b) Longitudinal Redundancy Check (VRC)

c) Cyclic Redundancy Check (VRC)

d) Checksum