Defensive Design - GCSE Computer Science OCR

___________ is a check made by a computer to ensure that the data entered is sensible or reasonable.

What type of validation would be used on a field to enter a mobile phone number to ensure it contains 11 digits

• Spell check

• Lookup table

• Presence check

• Length check

What type of validation would be used on a field to check that data has been entered?

• Spell check

• Lookup table

• Presence check

• Length check

What type of validation is when the last one or two digits in a code are used to check the other digits are correct?

• Spell check

• Check digit

• Presence check

• Length check

What type of validation is used to check that a value falls within the specified range

• Spell check

• Range check

• Presence check

• Length check

What type of validation should be used to ensure a National Insurance number is in the form LL 99 99 99 L where L is any letter and 9 is any number?

• Format check

• Range check

• Presence check

• Length check

Another method for validating data and stopping attacks is to clean up the data that is inputted so that it is ready for the application to use.

___________ trims or strips strings, removing unwanted characters from strings

Which one of the following inputs for an email address would not require data santisation?

• dave.smith@company.c

• [e-mail]

• dave@[e-mail]

• dave [e-mail]

_______________ will consider and anticipate misuse.

Misuse may be in the form of a brute force attack on the program

________________________ is a coding method to check that a user is who they say they are and allowed to access the program.