DATA LINK LAYER WIRED NETWORKS
DATA LINK CONTROL DLC
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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We cannot locate where the error is
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It takes a long time to calculate
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It can only be done once
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It is expensive to design
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Detailed explanation-1: -Its primary disadvantage is that it may fail to catch errors. If two data bits are corrupted, for instance, parity will not detect the error.
Detailed explanation-2: -An odd parity checking or an even parity checking has to be agreed between a transmitter and receiver. The problem of this approach is that the even number of bits changed will make the number of ones for being odd or even, and the parity bit error cannot be detected.
Detailed explanation-3: -Parity checking is not suitable for detecting single-bit errors in transmitted codes.
Detailed explanation-4: -A Parity check usually can detect the 1-bit error. A parity bit is a check bit, which is added to a block of data for error detection purposes. It is used to validate the integrity of the data.