validation and authentication

Question 1

what is authentication

Answer 1

techniques that are used to confirm the identity of a user before they’re allowed to access certain pieces of data or features of the program.

Question 2

what is a common way that organisations validate their users

Answer 2

passwords

Question 3

what is input validation

Answer 3

checking if data meets a certain criteria before passing it on to the main program

Question 4

what are the 5 types of common input validation checks?

Answer 4

range check, presence check, format check, look-up table, length check