6 - defensive design - mmd

What is the purpose of defensive design in programming?

• To make programs run faster

• To ensure programs function properly and prevent misuse

• To increase the size of the program

• To make programs look visually appealing

What is input sanitisation?

• Checking if data meets certain criteria

• Removing unwanted characters before processing

• Ensuring data is within a specified range

• Checking data against a table of acceptable values

Which of the following is an example of input validation?

• Removing unwanted characters

• Checking if an email address contains an "@" symbol

• Deleting unnecessary files

• Formatting text to be bold

What does the function formatName() do in the example provided?

• It formats the file name to uppercase

• It removes unwanted characters "(" and ")" from the file name

• It checks the length of the file name

• It adds a prefix to the file name

Which validation check ensures that data has been entered?

• Range check

• Presence check

• Format check

• Length check

What is a common way that programs confirm the identity of a user before allowing access to certain features?

• Using passwords

• Asking security questions

• Sending a verification email

• Using biometric data

What is one method to increase the security of a password-based authentication system?

• Use strong passwords

• Share passwords with others

• Use the same password for all accounts

• Write passwords on paper

Why is it important for programmers to get the level of authentication correct?

• It affects the program's functionality

• It makes the program run faster

• It reduces the cost of the program

• It increases the program's size

What is a benefit of a well-maintained program?

• It is easier for other programmers to understand

• It requires more resources to run

• It is harder to modify

• It has more bugs

What is the purpose of using comments in code?

• To explain what the code does

• To make the code run faster

• To increase the code's complexity

• To hide errors in the code