Donald Knuth<span> began the project, originally conceived as a single book with twelve chapters, in 1962.</span>
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.
The answer would be B. An attribute of a website that will indicate a more reliable source of information is when the site ends in ".edu". It is a top level domain for education. It would mean that this particular site is linked with universities, colleges or other educational sites thus it gives more information that are real and factual.
