To Prevent Invalid Data Input,a Bank Added an Extra Number

question 42

Multiple Choice

To prevent invalid data input,a bank added an extra number at the end of each account number and subjected the new number to an algorithm.This technique is known as:

• A)A validation check.
• B)check digit verification.
• C)A dependency check.
• D)A format check.

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Definitions:

Contribution Margin

The difference between sales revenue and variable costs, indicating how much revenue contributes to covering fixed costs and generating profit.