Explore topic-wise MCQs in Cryptography.

This section includes 6 Mcqs, each offering curated multiple-choice questions to sharpen your Cryptography knowledge and support exam preparation. Choose a topic below to get started.

1.

Division of (131B6C3) base 16 by (lA2F) base 16 yeilds

A. 1AD
B. DAD
C. BAD
D. 9AD
Answer» E.
Discussion
2.

The plain text for the cipher text RRLMWBKASPDH. Given the encryption key[(17 17 5 | 21 18 21 | 2 2 19)]is

A. PAYMOREMONEY
B. PAYINGRANSOM
C. GETINTHECAB
D. THEEXPRESSID
Answer» B. PAYINGRANSOM
Discussion
3.

On Encrypting thepepsiisintherefrigerator using Vignere Cipher System using the keyword HUMOR we get cipher text

A. abqdnwewuwjphfvrrtrfznsdokvl
B. abqdvmwuwjphfvvyyrfznydokvl
C. tbqyrvmwuwjphfvvyyrfznydokvl
D. baiuvmwuwjphfoeiyrfznydokvl
Answer» C. tbqyrvmwuwjphfvvyyrfznydokvl
Discussion
4.

Which one of the following is not a RC5 mode of operation?

A. RC5 block cipher
B. RC5-Cipher Block Chaining
C. RC5-Cipher Padding
D. RC5-CipherText Stealing
Answer» D. RC5-CipherText Stealing
Discussion
5.

Maurer s Universal Statistical Test is

A. a test to determine whether the number of runs of ones and zeros of various lengths is as expecte
B. a test to detect if a sequence can be significantly compressed without loss of information
C. a test to determine whether the number of ones and zeros in a sequence is approx the same as in a truely random o/p
D. a test for the check of evenness in the 1s and 0s
Answer» C. a test to determine whether the number of ones and zeros in a sequence is approx the same as in a truely random o/p
Discussion
6.

The GCD of x5+ x4+ x3 x2 x + 1 and x3 + x2+ x + 1 over GF(3) is

A. 1
B. x
C. x + 1
D. x<sup>2</sup> + 1
Answer» D. x<sup>2</sup> + 1
Discussion