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What does a presence check validate?
Pattern check
Schema validation
A mathematical algorithm that is used to validate identification numbers, such as credit card numbers, is called the Luhn
.
checksum validation
What is the purpose of a checksum?
Which of the following is an example of a format check?
checksum
Type check
What happens if the calculated checksum doesn't match the received checksum?
Uniqueness check
Which of the following is NOT a type of input check?
format check
syntax check
Data integrity
1. The process of verifying that input meets certain criteria is known as
.
What does the checksum digit in an ISBN represent?
What can barcodes be used for?
Which of the following is a benefit of using input verification checksums?
What is the purpose of the Luhn algorithm?
