Cryptography MCQ Questions & Answers

Cryptography MCQs : This section focuses on "Basics" of Cryptography. These Multiple Choice Questions (MCQ) should be practiced to improve the Cryptography skills required for various interviews (campus interview, walk-in interview, company interview), placements, entrance exams and other competitive examinations.

1. Cryptology, the study of cryptosystems.

A. TRUE
B. FALSE
C. Can be true or false
D. Can not say

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2. Cryptology can be subdivided into ______ branches.

A. 1
B. 2
C. 3
D. 4

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3. The art and science of breaking the cipher text is known as?

A. Cryptography
B. Crypgenalysis
C. Cryptanalysis
D. Both A and B

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4. Authentication service has ______ variants.

A. 1
B. 2
C. 3
D. 4

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5. Which of the following is the scrambled version of the plaintext produced by the encryption algorithm using a specific the encryption key?

A. Plaintext
B. Encryption
C. Decryption
D. Ciphertext

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6. For a given cryptosystem, a collection of all possible decryption keys is called a?

A. Encryption Key
B. Decryption Key
C. key space
D. key system

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7. How many Types of Cryptosystems there?

A. 1
B. 2
C. 3
D. 4

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8. The encryption process where same keys are used for encrypting and decrypting the information is known as ?

A. Symmetric Key Encryption
B. Asymmetric Key Encryption
C. Both A and B
D. None of the above

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9. The main goal of a _________ is to obtain unauthorized access to the information.

A. Simple Attack
B. Active Attacks
C. Internet Attack
D. Passive Attack

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10. A cryptosystem is also referred to as a cipher system.

A. TRUE
B. FALSE
C. Can be true or false
D. Can not say

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