OCR J277 - 2.3 Defensive Design

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

• Keeping passwords safe

• Authentication

• Data Validation

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?

• Username

• Password and username

• 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