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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What is the check digit for this bar code? 157842355654
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3
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7
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9
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5
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Explanation:
Detailed explanation-1: -All UPC (Universal Product Code) barcodes include a modulo-10 check digit. The UPC check digit is the twelfth digit, located to the far right of the UPC number. The first 11 digits in a UPC barcode are the assigned company prefix and the company-assigned product number. The 12th and final digit is the UPC check digit.
Detailed explanation-2: -What is a Check Digit? A check digit is a digit that is appended onto an identifier using a set algorithm so a vendor can quickly verify whether the identifier you have given is a valid one. For example, if you have a credit card with a 16 digit account number, the number is generated as a 15 digit number.
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