Which among the following represents the code in which codewords consists of message bits and parity bits separately? A. Block Codes B. Systematic Codes C. Code Rate D. Hamming Distance

The correct answer is: A. Block Codes

A block code is a type of error-correcting code that encodes a block of bits into a larger block of bits. The codewords of a block code are all of the same length, and the codeword length is usually a power of 2.

In a systematic code, the message bits are transmitted directly, and the parity bits are used to detect and correct errors. The parity bits are calculated based on the message bits, and they are added to the codeword before it is transmitted.

The other options are incorrect because:

• B. Systematic Codes is a type of block code in which the message bits are transmitted directly, and the parity bits are used to detect and correct errors.
• C. Code Rate is the ratio of the number of message bits to the number of code bits in a block code.
• D. Hamming Distance is the minimum number of bits that need to be changed in one codeword to change it into another codeword.