Data Structures Algorithms-II MCQs

Page No. 118

Which of the following cipher replaces letters with symbols?


apolybius square ciper


baffine cipher


ccaesar cipher


dpigpen cipher


View Answer pigpen cipher

What will be the ciphered text if the string “SANFOUNDRY” is given as input to the code of vigenere cipher with keyword as “HELLO”?


aUEWIIDKLL


bZEYQCOCM


cZEYQCBROCM


dZEYQCBROCM


View Answer ZEYQCBROCM

In which of the following cipher the plain text and the ciphered text does not have a same number of letters?


aaffine cipher


bvigenere cipher


ccolumnar cipher


dadditive cipher


View Answer vigenere cipher

Which cipher is represented by the following function?


avigenere cipher


bhill cipher


ckeyword cipher


drotor cipher


View Answer vigenere cipher

What will be the plain text corresponding to cipher text “PROTO” if vigenere cipher is used with keyword as “HELLO”?


aSANFOUNDRY


bWORLD


cINDIA


dAMERICA


View Answer INDIA

Vigenere cipher is harder to decipher than keyword cipher.


atrue


b false


cA & B


d None of the above


View Answer true

Vigenere table consists of _________


a26 rows and 26 columns


b26 rows and 1 column


c1 row and 26 columns


d27 rows and 27 columns



Encryption in Vigenere cipher is done using _________


avigenere formula


bvigenere cycle


c vigenere square


dvigenere addition


View Answer vigenere square

Vigenere cipher is an example of ______________


amono-alphabetic cipher


bpoly-alphabetic cipher


ctransposition cipher


dadditive cipher



Which of the following is not true about atbash cipher?


ait is a mono alphabetic substitution cipher


b it can only be used to encrypt hebrew alphabet


cit is a special case of affine cipher


dit is weaker than playfair cipher



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