Computer Science - Networking - Discussion

44. 

If odd parity is used for ASCII error detection, the number of 0s per eight-bit symbol is _____.

[A]. even
[B]. odd
[C]. indeterminate
[D]. 42

Answer: Option B

Explanation:

No answer description available for this question.

Shewangizaw Bogale said: (Feb 18, 2017)  
Odd parity system: the parity bit is used to ensure that the total number of 1's when added together, equals an odd number.

Odd parity works by counting the number of 1's and if the total is odd then the parity bit is set to 0 and if it is even the parity bit is set to 1.

Thus, the total number of 1's in the byte is always odd.

Even parity system: the parity bit is used to ensure that the total number of 1's when added together, equals an even number.

Even parity works by counting the number of 1's and if the total is even then the parity bit is set to 0 and if it is odd the parity bit is set to 1.

Thus, the total number of 1's in the byte is always even.

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