Answer:
Incomplete Question.
I'll answer this question based on general terms
Explanation:
Two Factor Authentication, abbreviated as 2FA.
It is a type of authentication that requires the presentation of two credentials for access to personal data and information.
The credentials needed for a 2FA are
1. Either of the following; PIN, Password or Pattern
2. Your device or gadget which could be an ATM Card, Mobile Phone
3. Biometrics such as fingerprint, voice input
Number one is often referred to as "Something you know"
Number two is referred to as "Something you have"
Number three is referred to as "Something you are"
The 2FA doesn't require the three aforementioned credentials. It only needs just two of the credentials to provide its authentication.
Answer:
Natural systems are already in place while man made systems were created by humans manipulating things in some way.
Explanation:
man made: human created
natural systems: existed without interference
Answer:
Java variable is the name of a group of data value stored in memory that can change its value but cannot change its type during the program's execution
Explanation:
Generally, a variable is a temporary location in the memory where data are stored in a computer program. Values in the variable can always be change during the course of program execution.
The equal sign ( = ) is use to assign and identify a variable. The value to be stored in the variable is always at the right of the equal sign, while the variable name is always at the left of the equal sign.
