Related InterviewSolutions

• The default key size of RC2 Feistel cipher is _______(a) 64GB(b) 64 bits(c) 64 bytes(d) 64KBI have been asked this question in exam.This intriguing question originated from Cryptography in division Number Theory and Cryptography of Discrete Mathematics
• _______ are used as the base of the Public Key Infrastructure.(a) SSL certificates(b) TLS certificates(c) X.509 certificates(d) HAS certificatesI have been asked this question during an interview.I'd like to ask this question from Cryptography topic in section Number Theory and Cryptography of Discrete Mathematics
• Nine’s complement of a number is formed by _________(a) replacing each digit by 9 minus that digit(b) replacing each digit by 1plus that digit(c) replacing each digit by 8 minus that digit(d) None of the mentionedI had been asked this question in an internship interview.My doubt is from Number Theory topic in chapter Number Theory and Cryptography of Discrete Mathematics
• One’s complement of a number x is y, then one’s complement of y is?(a) y(b) x(c) x + y(d) None of the mentionedThis question was addressed to me in class test.The origin of the question is Number Theory in chapter Number Theory and Cryptography of Discrete Mathematics
• In which cipher each letter of the plaintext is substituted by any other letter to form the cipher message?(a) Shift cipher(b) DES encryption(c) Block cipher(d) AES encryptionI have been asked this question in examination.Question is taken from Cryptography topic in portion Number Theory and Cryptography of Discrete Mathematics
• What is the block size of blowfish block cipher?(a) 64 bits(b) 128 bits(c) 1043 bits(d) 10 bitsI have been asked this question during an interview.My question comes from Cryptography topic in chapter Number Theory and Cryptography of Discrete Mathematics
• What type of algorithm does AES encryption use?(a) Stream cipher(b) Symmetric block cipher(c) Asymmetric caesar cipher(d) DES encryptionI have been asked this question in examination.My question is from Cryptography topic in section Number Theory and Cryptography of Discrete Mathematics
• What are the steps in the Feistel function?(a) expansion, mixing, substitution, permutation(b) extract, transform, load(c) extract, load, transform(d) expansion, divide, mixing, permutationI got this question in unit test.This intriguing question originated from Cryptography in division Number Theory and Cryptography of Discrete Mathematics
• How many bits are there for random bits and error detection bits in the case of DES block ciphers?(a) 72, 1024(b) 56, 8(c) 104, 45(d) 32, 198The question was posed to me in unit test.This intriguing question originated from Cryptography in division Number Theory and Cryptography of Discrete Mathematics
• ______ uses the concept of pseudo-random sequence.(a) Stream cipher(b) DES encryption(c) Caesar cipher(d) Block cipherThe question was asked in an interview for job.My question is based upon Cryptography topic in section Number Theory and Cryptography of Discrete Mathematics