d) all of the mentioned View Answer, 11. The questions asked in this NET practice paper are from various previous year papers. View Answer, 9. i) Provided key is large enough, brute-force key search is not practical, especially given the high key schedule cost i) In the CBC mode, the plaintext block is XORed with previous ciphertext block before encryption. d) 2 and 4 a) the user is no longer certified by this CA Questions from Previous year GATE question papers, UGC NET Previous year questions and practice sets.
ii) Key dependent S-boxes and sub keys make analysis very difficult A directory of Objective Type Questions covering all the Computer Science subjects.
a) 1 and 3 b) 2 and 3 c) 3 and 4 d) 2 and 4 View Answer Which of the following slows the cryptographic algorithm - 1) Increase in Number of rounds 2) Decrease in Block size 3) Decrease in Key Size 4) Increase in Sub key Generation. 2) Decrease in Block size. It is desirable to revoke a certificate before it expires because – View Answer, 6.
b) ii) and iv) A total of seven messages are required in the Public-Key distribution scenario. Confusion hides the relationship between the ciphertext and the plaintext. 1. How many keys does the Triple DES algorithm use? a) 1 and 3 b) 2 and 3 c) 3 and 4 d) 2 and 4 View Answer View Answer, 5. The S-Box is used to provide confusion, as it is dependent on the unknown key.
c) i) Attempt a small test to analyze your preparation level.
Suppose that A has obtained a certificate from certification authority X1 and B has obtained certificate authority from CA X2.
6. Here you can access and discuss Multiple choice questions and answers for various compitative exams and interviews. Which of the following slows the cryptographic algorithm 1) Increase in Number of rounds 2) Decrease in Block size 3) Decrease in Key Size 4) Increase in Sub key Generation a) 1 and 3 b) 2 and 3 c) 3 and 4 d) 2 and 4 round is similar rounds and 6. MD5 b) Cipher Block chaining (CBC) a) 4096 Public Key Cryptosystems & Hash Functions, MACs, Whirlpool Algorithm & Key Management, here is complete set of 1000+ Multiple Choice Questions and Answers, Prev - Cryptography Questions and Answers – Overview – I, Next - Cryptography Questions and Answers – Overview – III, Cryptography Questions and Answers – Overview – I, Heat Transfer Questions and Answers – System of dimensions, Java Programming Examples on Combinatorial Problems & Algorithms, Digital Communication Questions and Answers, C++ Algorithms, Problems & Programming Examples, Data Structures & Algorithms II – Questions and Answers, Java Programming Examples on Set & String Problems & Algorithms, C++ Programming Examples on Set & String Problems & Algorithms, C Programming Examples on Set & String Problems & Algorithms, Network Security Questions and Answers – Overview – II, Cryptography and Network Security Questions and Answers, Symmetric Ciphers Questions and Answers – Block Cipher Systems, SQL Server Questions and Answers – Data Cryptography, Symmetric Ciphers Questions and Answers – DES Modes of Operation – I, Operating System Questions & Answers – Security – Cryptography, Discrete Mathematics Questions and Answers – Cryptography – Decryption, Symmetric Ciphers Questions and Answers – DES Modes of Operation – II, Cyber Security Questions and Answers – Types of Cryptography – 2, Computer Fundamentals Questions and Answers – Cryptography, Symmetric Ciphers Questions and Answers – RC4 and RC5 – II, Cyber Security Questions and Answers – Cryptography – Different Ciphers and their Security Strength. c) 3 and 4
d) i) ii) and iv) Which of the following slows the cryptographic algorithm – 1) Increase in Number of rounds 2) Decrease in Block size 3) Decrease in Key Size 4) Increase in Sub key Generation. b) 224 1 and 3 2 and 3 3 and 4 2 and 4 © 2011-2020 Sanfoundry. View Answer, 10. In the DES algorithm the 64 bit key input is shortened to 56 bits by ignoring every 4th bit.
iv) In CBC mode repetitions in plaintext do not show up in ciphertext, a) iii) Which of the following slows the cryptographic algorithm –
1) Increase in Number of rounds View Answer, 3. c) padded as 10*1 a) 168
CompTIA question 85047: Which of the following cryptography algorithms will produce a fixed-length,irreversible output?A. d) n! Participate in the Sanfoundry Certification contest to get free Certificate of Merit.
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