2.3 Defensive Design

Which of these is not a method for ensuring a program is robust?

• Keeping passwords safe
• Data Validation
• Authentication

Why is code indented?

• To group together a function
• The code does not use a { syntax and indentation is used instead
• To make it easier to read
• All of the above

What is data validation?

• Checking that the data entered is wrong
• Checking that the data entered is correct
• Checking that the data entered is sensible or reasonable

Which of these authentication methods is most secure?

• Password
• Password and username
• Key Card
• 2 factor authentication

Which is these IS NOT an example of validation?

• Checking the number entered is 2 digits
• Asking a user to type in a number
• 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
• Sorts numbers into ascending order
• Checks that the data is in the correct format

When a program runs it asks the user to enter their first name. Which is an example of Valid data?

• 00000
• Sarah
• Sarah J0n3s
• Sarah Jones

Which one of these is not a method for planning for misuse?

• Limiting the number of login attempts
• Requesting a password and user name
• Authentication
• Not validating the data entry

Which is a not method of authentication?

• User name
• Password and user name
• Pattern Password
• Finger print password

What is maintainability?

• Checking programs work
• Making your code easy to follow, for example, with comments
• Testing a program for errors
• Training staff to use the program correctly