Error Detection and Correction

**1.**Which error detection method uses one's complement arithmetic?

**2.**Which error detection method consists of just one redundant bit per data unit?

**3.**In cyclic redundancy checking, what is the CRC?

**4.**In cyclic redundancy checking, the divisor is _______ the CRC

**5.**A burst error means that two or more bits in the data unit have changed.

**6.**In ________ error correction, the receiver corrects errors without requesting retransmission.

**7.**In ________ error correction, the receiver asks the sender to send the data again.

**8.**In modulo-2 arithmetic, __________ give the same results.

**9.**. In modulo-2 arithmetic, we use the ______ operation for both addition and subtraction.

**10.**We add r redundant bits to each block to make the length n = k + r. The resulting n-bit blocks are called _________