n error in bit transmission (perhaps due to noise) may not be detected, even if a parity bit is used.1 pointTrueFalse

Problem Breakdown

1. The question is asking about the reliability of using a parity bit for error detection in bit transmission.
2. We need to determine whether it is true or false that an error may go undetected with the use of a parity bit.

Relevant Concepts

1. Parity Bit: A parity bit is a binary digit added to a group of binary digits to ensure the total number of 1s is either even (even parity) or odd (odd parity).
2. Error Detection: Parity bits can detect errors if the total number of bits changed from even to odd or vice versa. However, if an even number of bits are flipped (e.g., 2, 4, etc.), the parity bit may not detect the error.

Analysis and Detail

1. If one bit changes, the parity will be incorrect, and the error will be detected.
2. If two or more bits flip, particularly an even number of bits, the parity might still match, leading to an undetected error.

Verify and Summarize

• Therefore, it is indeed possible for an error to go undetected with just a parity bit, especially when multiple bits are altered.

Final Answer

True. An error in bit transmission may not be detected even if a parity bit is used, particularly when an even number of bits are erroneous.