2.3 Producing Robust Programs

Question 1

Whats a defensive design

Answer 1

Helps to ensure programs function properly and means that programs should never break or produce errors

Question 2

Whats authentication

Answer 2

Confirms the identity of a user before they are allowed access to data or programs

Question 3

Whats input validation

Answer 3

Checks that data inputed meets certain criteria before passing it into the program

Question 4

Whats a syntax error

Answer 4

An error that arises when the rules or grammar of a programming language are broken

Question 5

Whats a logic error

Answer 5

When a program is able to run but not as expected

Question 6

Whats iterative testing

Answer 6

The program is tested while it’s being developed. Often a single module is tested

Question 7

Whats final testing

Answer 7

The program is tested at the end of the development process. The whole program is tested at the same time to check its all working

Question 8

Whats normal data

Answer 8

Data the user is likely to input

Question 9

Whats boundary (extreme) data

Answer 9

values at the limit of what the program should be able to handle

Question 10

Whats invalid data

Answer 10

Jnputs with the correct data type that should be rejected by the program

Question 11

Whats erroneous data

Answer 11

Inputs with an incorrect data type that should be rejected by the program