A confidential number used as an authentication factor to verify a user’s identity is called a:

A confidential number used as an authentication factor to verify a user’s identity is called a:
A .  PIN
B .  User ID
C .  Password
D .  Challenge

View Answer

Answer: A

Explanation: PIN Stands for Personal Identification Number, as the name states it is a combination of numbers.

The following answers are incorrect: User ID This is incorrect because a Userid is not required to be a number and a Userid is only used to establish identity not verify it.

Password. This is incorrect because a password is not required to be a number, it could be any combination of characters.

Challenge. This is incorrect because a challenge is not defined as a number, it could be anything.