GCSE J277 - 2.3.1 - Defensive Design

What programming feature checks inputs meet a defined criteria

• Authentication
• Commeting
• Validation
• Form

Which of these is not a validation check

• Format Check
• Type Check
• Range Check
• Program Check

Checks data isn't too short or too long

• Check Digit
• Format Check
• Length Check
• Lookup Table

The last one or two digits in a code are used to check the other digits are correct

• Check Digit
• Format Check
• Length Check
• Lookup Table

Looks up acceptable values in a table

• Check Digit
• Format Check
• Length Check
• Lookup Table

Checks the data is submitted in the right format

• Check Digit
• Format Check
• Length Check
• Lookup Table

Checks that data has been entered into a field

• Presence Check
• Check Digit
• Format Check
• Range Check

Checks that data falls within a specified range

• Presence Check
• Check Digit
• Format Check
• Range Check

Which validation: Checking a password is 6 letters long

• Check Digit
• Format Check
• Length Check
• Lookup Table

Which validation: A barcode scanner checking a barcode is correct

• Check Digit
• Format Check
• Length Check
• Lookup Table