What is Two$-$factor Authentication or $"2$FA$"?$

Group of answer choices

Two factor authentication uses two different methods of authentication, so if one method is compromised, an attacker will not be able to access your account.

Two factor authentication is the type of encryption that is used $($SSH and NETBOIS$)$

Two factor authentication means you must have a username AND password $($two factors$)$

Two factor authentication is similar to what Boise State does when it accesses your grades.

Flag question: Question $4$

Question $4$