Defensive Design

What does 'Defensive Design' mean?

• A method of planning a program using shapes.

• A method of planning a program using plain English.

• A method of designing a program so that it functions properly and doesn't crash.

• A method of checking that an input matches the criteria.

What does 'Input Validation' mean?

• A method of removing unwanted characters from an input.

• A method of planning a program using plain English.

• A method of designing a program so that it functions properly and doesn't crash.

• A method of checking that an input matches the criteria.

What does 'Input Sanitisation' mean?

• A method of removing unwanted characters from an input.

• A method of planning a program using plain English.

• A method of designing a program so that it functions properly and doesn't crash.

• A method of checking that an input matches the criteria.

Which of the following Validation Checks is the most suitable for checking a text box has been filled in?

• Range Check

• Presence Check

• Format Check

• Check Digit

Which of the following Validation Checks is the most suitable for checking a postcode has been entered correctly?

• Range Check

• Presence Check

• Format Check

• Check Digit

Which of the following Validation Checks is the most suitable for checking a number has been entered correctly?

• Range Check

• Presence Check

• Format Check

• Check Digit

What is the purpose of a Look-up table?

• To check data is within a specified range.

• To check data is in the correct format.

• To check data against a table of acceptable values.

• To check data is the correct length.

What is the purpose of a Length Check?

• To check data is within a specified range.

• To check data is in the correct format.

• To check data against a table of acceptable values.

• To check data is the correct length.

What is the purpose of a Range Check?

• To check data is within a specified range.

• To check data is in the correct format.

• To check data against a table of acceptable values.

• To check data is the correct length.

What does 'Verification' mean?

• Checking an input is within a specified range, for example DOB between 01/09/2009 and 31/08/2010 for new year 7s.

• Checking an input is in the correct format, for example an email must include @.

• Checking an input is correct, for example asking a user to type their password in twice (double entry).

• Checking an input is the correct length, for example, a password should be at least 8 characters long.