Computer Science for IGCSE & O level - The Internet And Its Uses (Section 5 - No. 9)
Which of the following is a key component of 'two-factor authentication'?
A password.
A physical key.
Biometric verification.
All of the above.
Explanation
Two-factor authentication generally requires a combination of factors, such as something you know (password) and something you have (physical key, biometric data).
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