2.3 Robust Programming

Question 1

What are examples of defensive design features?

Answer 1

• Authentication
• Verification
• Validation

Question 2

What is authentication?

Answer 2

• Checking correct user is entering a system

Question 3

What is verification?

Answer 3

• User input correct data

Question 4

What is validation?

Answer 4

• Correct format

Question 5

What is input sanitation?

Answer 5

• Filtering input data
• Remove potential malicious code / SQL injection risk

Question 6

How can code be made more maintainable?

Answer 6

• Comments
• Indentation
• Appropriate variable names
• Subprograms

Question 7

What are ways to create appropriate variable names?

Answer 7

• snake_case ( underscores )
• camelCase ( capitals )

Question 8

What are features of IDE?

Answer 8

• Syntax highlighting
• Error diagnostics
• Run time environment
• Editor
• Translator

Question 9

What are the advantages of IDE?

Answer 9

• Syntax highlighting ; more readable
• Error diagnostics ; finds bugs
• Run time environment ; see program change
• Editor ; write code
• Translator ; saves time

Question 10

What are the two types of testing?

Answer 10

• Iterative ( subprograms)
• Terminal ( entire code )

Question 11

What are the three types of test data?

Answer 11

• Valid
• Extreme / boundary
• Invalid / erroneous

Question 12

What is valid data?

Answer 12

• Sensible
• Processable data

Question 13

What is extreme data?

Answer 13

• Falls at the boundary of possible ranges

Question 14

What is invalid data?

Answer 14

• Erroneous
• Cannot be processed