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Cryptography Objective Questions and Answers

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This cryptography quiz contains carefully curated objective questions with correct answers and clear explanations. It is designed for developers, security learners, and interview preparation, covering modern encryption, hashing, authentication, and security best practices.

Practice Cryptography MCQs with Detailed Explanations

Answer at least 12 questions to submit.

46.
Medium 
Which cryptographic operation verifies data authenticity?
47.
Easy 
What is the purpose of a private key?
48.
Medium 
Which algorithm is best suited for mobile devices?
49.
Easy 
Which protocol uses certificates for trust?
50.
Easy 
Which encryption type uses the same key for encryption and decryption?
51.
Easy 
What is the purpose of a certificate authority?
52.
Hard 
Which algorithm is resistant to quantum attacks?
53.
Easy 
Which attack involves intercepting communication?
54.
Easy 
Which cryptographic function is one-way?
55.
Medium 
Which algorithm is used for generating digital certificates?
56.
Easy 
What does encryption protect against?
57.
Easy 
Which algorithm is commonly used in blockchain hashing?
58.
Easy 
What is the main goal of cryptography?
59.
Medium 
Which encryption is faster for large data?
60.
Easy 
Which cryptographic practice improves password security the most?
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