# 3 Two dimensional parity and CRC are two well-known techniques for error handling. There are few differences in the capability/strength of the each of the technique.- Explain with detail example.

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Step 1

3.

Two dimensional parity:-

For each row, parity check bits are calculated, which is identical to a basic parity check bit. For each column, parity check bits are computed and delivered together with the data. These are compared with the parity bits calculated on the received data at the receiving end.

Two-Dimensional Parity Check, which arranges data in the form of a table, can enhance performance.

For each row, parity check bits are calculated, which is identical to a single-parity check.

A block of bits is separated into rows in a Two-Dimensional Parity check, and the superfluous row of bits is added to the whole block.

The parity bits are compared with the parity bits derived from the received data at the receiving end.

Step 2

CRC:-

A series of redundant bits, known as cyclic redundancy check bits, is added to the end of a data unit in CRC such that the resultant data unit is divisible by a second, preset binary number.

The entering data unit is split by the same number at the destination. If there is no remainder at this step, the data unit is believed to be accurate and accepted.

A remainder indicates that the data unit was destroyed during transit and must be discarded as a result.