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Computer Cryptography MCQ Question with Answer

Computer Cryptography MCQ with detailed explanation for interview, entrance and competitive exams. Explanation are given for understanding.

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Question No : 36
The DES (Data Encryption Standard) cipher follows the fiestal structure. Which of the following properties are not shown by the fiestal structure?

The input text is divided into two parts: one being left half and another one being right half.
Swapping of the left and right halves are performed after each round.
The plain text is converted into a matrix form first
None of the above
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Question No : 37
Among the following given options, chose the strongest encryption technique?

DES ( Data Encryption Standard)
Double DES
Triple DES
AES (Advance Encryption Standard)
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Question No : 38
What is the full-form of RSA in the RSA encryption technique?

Round Security Algorithm
Rivest, Shamir, Adleman
Robert, Shamir, Addie
None of the above
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Question No : 39
The above steps are performed in each round of which of the following ciphers?

Rail fence cipher
Data Encryption Standard (DES)
Advance Encryption Standard (AES)
None of the above
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Question No : 40
Codes and ciphers are different ways to _____ a message.

Encrypt
Decrypt
Both A and B
All of the mentioned above
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Question No : 41
_____ ciphers encrypt uniformly sized blocks of data.

Set
Block
Rack
All of the mentioned above
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Question No : 42
Decryption is a process to unveil the ______.

Unsecured data
Secured data
Insecure
None of the mentioned above
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