Question

CRC is used for data bits 101101101. The divisor is 1100101. How many bit(s) is(are) the check bit(s)? o 6 o 8 o 7 o 10 o 4 o 12 o 14 o 5

Answer 1

In a CRC (Cyclic Redundancy Check) operation, the number of check bits is determined by the degree of the polynomial used as the divisor.

In this case,

• the divisor is 1100101, which has a degree of 6.

To calculate the number of check bits, you add the degree of the divisor to 1. So, in this case, it would be

`\large{ \sf{6 + 1 = \underline{ \pmb{7 }} \: \: check \: \: bits.}}`

So, the answer is 7 check bits.