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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Detection, Correction
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Correction, Convolution
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Correction, Detection
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Convolution, Detection
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Detailed explanation-1: -The correction of errors is more difficult than the detection. In error detection, we are looking only to see if any error has occurred. The answer is a simple yes or no. In error correction, we need to know the exact number of bits that are corrupted and more importantly, their location in the message.
Detailed explanation-2: -Error detection is a method that can look at some data and detect if it has been corrupted while it was stored or transmitted. Error correction is a step better than error detection; when it detects an error it tries to put the data back to how it should have been.
Detailed explanation-3: -Error detection is accomplished by using a Frame Check Sequence (FCS) method like Parity, Checksum Calculation or Cyclic Redundancy Check (CRC). ∴ Hence the correct answer is the Cyclic Redundancy Code.