GCSE - 2.3 Producing Robust Programs

What does a range check do?

• Checks data across a range of numbers

• Checks the data is within an acceptable range

• Where three types of data are used

• Checks that the data is in the correct format

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

• Keeping passwords safe

• Input Validation

• Authentication

• Anticipating Misuse

Why is code indented?

• To group together a function

• If a programming language doesn't have syntax to define code blocks, so it uses indents

• To make it easier to read

• All of the above

Which is these IS NOT an example of input validation

• Checking the number entered is 2 digits

• Asking a user to enter the same data in twice

• Use of a Lookup table

• Use of a presence check

Which of these is not a method for authenticating a user?

• Password

• Password & Username

• Finger print scanner

• Encryption

Which method identifies an incorrect password entry?

• Data Validation

• Authentication

• Program Comments

• Input Sanitisation

What is iterative testing?

• Testing completed after an error is found

• Rom tests on a computer program

• Tests completed as the program is being coded

• Tests which are planned

A program asks a user to enter a temperature in degrees Celsius. Which of the following would be used as normal test data (click all that apply)

• -8

• 12

• 70

• Hot

A program asks a user to enter a temperature as a number in degrees Celsius. Which of the following would be used as Erroneous (invalid) test data

• Hot

• 20

• -10

• Twenty

A program asks a user to enter a temperature in degrees Celsius. Which of the following would be used as extreme test data (click all that apply)

• -89

• 20

• 57

• 1000