What happens if the calculated checksum doesn't match the received checksum?

What does a presence check validate?

Which of the following is a benefit of using input verification checksums?

What is the purpose of the Luhn algorithm?

Which of the following is NOT a type of checksum?

What is an input verification checksum?

What can barcodes be used for?

What does the checksum digit in an ISBN represent?

What is the purpose of barcode scanning?

What does a length check verify?

Which type of input check ensures that the input is in the correct format?

What does ISBN stand for?

What is the purpose of entry verification?

Which of the following is an example of a format check?

Which input check ensures that the input is not empty?