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Welcome to the Encryption Techniques MCQs Page

Dive deep into the fascinating world of Encryption Techniques with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Encryption Techniques, a crucial aspect of Cryptography and Network Security. In this section, you will encounter a diverse range of MCQs that cover various aspects of Encryption Techniques, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within Cryptography and Network Security.

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Check out the MCQs below to embark on an enriching journey through Encryption Techniques. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of Cryptography and Network Security.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Encryption Techniques. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Encryption Techniques MCQs | Page 3 of 7

Q21.
Consider the cipher text message:

YJIHX RVHKK KSKHK IQQEV IFLRK QUZVA EVFYZ RVFBX UKGBP KYVVB QTAJK TGBQO ISGHU CWIKX QUXIH DUGIU LMWKG CHXJV WEKIH HEHGR EXXSF DMIIL UPSLW UPSLW AJKTR WTOWP IVXBW NPTGW EKBYU SBQWS

Relative Frequencies –
3 7 2 2 5 5 7 9 11 4 14 4 2 1 3 4 6 5 6 5 7 10 9 8 4 2

The Index of Coincidence is –
Discuss
Answer: (d).0.044
Q22.
A symmetric cipher system has an IC of 0.041. What is the length of the key ‘m’?

a.

1

b.

3

c.

2

d.

5

Discuss
Answer: (d).5
Q23.
In public key cryptosystem _____ keys are used for encryption and decryption.
Discuss
Answer: (b).Different
Q24.
In public key cryptosystem which is kept as public?
Discuss
Answer: (a).Encryption keys
Q25.
In a trapdoor function, the functions are easy to go in
Discuss
Answer: (a).One direction
Discuss
Answer: (c).Electronic mails & File encryption
Discuss
Answer: (c).Private & Public key system
Q28.
Private key algorithm is used for _____ encryption and public key algorithm is used for _____ encryption.
Discuss
Answer: (a).Messages, session key
Q29.
Which are called the block ciphers?
Discuss
Answer: (d).All of the mentioned
Q30.
Which has a key length of 128 bits?
Discuss
Answer: (a).IDEA
Page 3 of 7

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