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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A block of data is sent alongside a calculated value. The receiving computer also calculates what it believes should be the value. The values are then compared to see if an error has occurred during transmission
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Parity Check
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Checksum
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Check Digit
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None of the above
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Explanation:
Detailed explanation-1: -Checksum. A block of data is sent alongside a calculated checksum value. The receiving computer also calculates what it believes should be the checksum. The checksum values are then compared to see if an error has occurred during transmission.
Detailed explanation-2: -There are three main techniques for detecting errors in frames: Parity Check, Checksum and Cyclic Redundancy Check (CRC).
Detailed explanation-3: -A parity check is a hardware control that detects data errors when data are read from one computer to another, from memory or during transmission. Checksum: Checksums are exactly same as parity but able to identify complex errors also by increasing the complexity of the arithmetic.
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