Defensive design considerations part 1

Question 1

What is input validation in programming?

Answer 1

Input validation checks if data input by the user meets specific criteria or rules before processing.

Question 2

What are the 5 types of input validation?

Answer 2

1. Type check 2. Range check 3. Presence check 4. Format check 5. Length check

Question 3

What is a type check in input validation?

Answer 3

Ensures the input is of the correct data type

Question 4

What is a range check in input validation?

Answer 4

A range check ensures the data is in the correct range

Question 5

What is a presence check in input validation?

Answer 5

A presence check ensures that mandatory or required data has been entered

Question 6

What is a format check in input validation?

Answer 6

A format check ensures the data input is in the correct format

Question 7

What is a length check in input validation?

Answer 7

A length check ensures the input has the correct (or minimum/maximum) number of characters

Question 8

How does input validation make a program more robust?

Answer 8

It prevents errors by ensuring data meets specific criteria before processing

Question 9

Why is anticipating misuse important in defensive design?

Answer 9

It helps prevent crashes or errors caused by unexpected user actions or inputs.

Question 10

What is a common example of anticipating misuse in programming?

Answer 10

Checking for division by zero to avoid program crashes.