Defensive Design

Which of these is NOT a method for ensuring that a program is robust

• Data Validation

• Data Sanitisation

• Keeping passwords safe

what is data validation?

• checking that data entered is wrong

• checking that data entered is right

• checking that data entered is reasonable or sensible

which of these is NOT an example of data validation?

• checking the number entered is two digits

• asking a user to enter the same data twice

• Use of a lookup table

• Use of a presence check

what does a range check do?

• checks data across a range of numbers

• checks the data is within an acceptable range

• checks that data is in the correct format

• checks that data is there

A user is asked to enter their full name, which is valid data?

• Mr Jones

• Mr S Jones

• Steven Jones

• Steven

what is defensive design?

• making your code error free

• a method ensuring that your code is not misused

• Code where data is validated

• Creating code that is easy to read and understand

A user is attempting to enter extra data, which method would identify this issue?

• data validation

• Input sanitisation

• Input check

• Format check

Deliberately misusing or breaking computer systems is illegal.

• True
• False

Inputting invalid data can cause errors in a system.

• True
• False

Whitelists and blacklists are used in validation.

• True
• False