COMPUTER NETWORKING

DATA LINK LAYER WIRED NETWORKS

DATA LINK CONTROL DLC

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
checksum scheme is based on ____, CRC is based on ____
A
Addition, binary division
B
binary division, Addition
C
subtraction, binary division
D
binary division, subtraction
Explanation: 

Detailed explanation-1: -The CRC is a complex algorithm derived from the CHECKSUM error detection algorithm, using the MODULO algorithm as the basis of operation. It is based on the value of polynomial coefficients in binary format for performing the calculations.

Detailed explanation-2: -CRC is a hash function based on binary division. A sequence of redundant bits (called CRC bits) are appended to the end of the data block so that the resulting block is exactly divisible by a second, predetermined binary number.

Detailed explanation-3: -Definition. Checksum and CRC are schemes for detecting the errors of data which occur during transmission or storage. The data computed and appended to original data in order to detect errors are also referred as checksum and CRC.

There is 1 question to complete.