1. Which mode is recommend for the NIST SP 800-90 Random number generator? a) OFB b) CBC c) CFB d) CTR AnswerAnswer: d [Reason:] OFB is the recommended mode for the NIST SP 800-90 Random number generator. 2. ANSI X9.17 uses which cryptographic algorithm? a) DES b) AES c) RC5 d) 3DES AnswerAnswer: d [Reason:]…