Multiple Choice Questions.. 1. Recognition by fingerprint, retina, and face are examples of ?         A. face recognition         C. dynamic biometrics         B. static biometrics         D. token authentication 2. A strategy is one in which the system periodically runs its own password cracker to find guessable passwords.         A. user education         C. proactive password checking         B. reactive password checking         D. computer-generated password

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A:

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A: The answer is

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A: Answer is

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Cryptography

Cryptography is a term used in computer science to describe secure information and communication techniques that transform messages in difficult-to-decipher ways using mathematical concepts and a set of rule-based calculations known as algorithms.