Which of the following satisfies a two-factor user authentication?Group of answer choicesIris scanning plus fingerprint scanningTerminal ID plus global positioning system (GPS)A smart card requiring the user's PINUser ID along with password
Question
Which of the following satisfies a two-factor user authentication?Group of answer choicesIris scanning plus fingerprint scanningTerminal ID plus global positioning system (GPS)A smart card requiring the user's PINUser ID along with password
Solution
The option that satisfies a two-factor user authentication is "A smart card requiring the user's PIN".
Two-factor authentication requires two different types of information from the user, such as something you know (like a password or PIN) and something you have (like a smart card). In this case, the smart card is something the user has, and the PIN is something the user knows.
The other options do not satisfy two-factor authentication because they either only involve one factor (like User ID along with password, which are both things you know) or they involve two of the same type of factor (like Iris scanning plus fingerprint scanning, which are both something you are). Terminal ID plus GPS is also not a two-factor authentication because it involves something you have (Terminal ID) and something you are (GPS location), but the GPS location is not a reliable authentication factor because it can be easily spoofed.
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