Data Structures Algorithms-II MCQs

Page No. 117

What is the meaning of cipher in computer terminology?


a an algorithm that performs encryption


ban algorithm that generates a secret code


can algorithm that performs encryption or decryption


da secret code



What is common between affine cipher and pigpen cipher.


aboth are mono alphabetic substitution cipher


bboth are poly alphabetic substitution cipher


cboth can be cracked using frequency analysis


dboth are transposition cipher



What will be the plain text corresponding to ciphered text “|_ _| >” if pigpen cipher is used for encryption?


acat


bhat


cdog


drat


View Answer cat

What will be the ciphered text corresponding to plain text “ACT” if pigpen cipher is used for encryption?


a_| |_ >


b|_ > |_


c_| |_<


d|_< _|


View Answer _| |_ >

Pigpen cipher is not susceptible to frequency analysis.


aTrue


bFalse


cA & B


d None of the above


View Answer False

Pigpen cipher is less secure than a vigenere cipher.


aTrue


b False


cA & B


d None of the above


View Answer True

Pigpen cipher is an example of?


aMono alphabetic substitution cipher


bTransposition cipher


cPoly alphabetic substitution cipher


dGeometric substitution cipher



Which of the following is not a poly alphabetic substitution cipher?


avigenere cipher


bone time pad cipher


cplay fair cipher


dpigpen cipher


View Answer pigpen cipher

Which of the following cipher was used by freemasons?


aVigenere cipher


bAutokey cipher


cPigpen cipher


dHill cipher


View Answer Pigpen cipher

Which of the following is not an alternative name of pigpen cipher?


apen cipher


bfreemason’s cipher


cnapoleon cipher


d tic-tac-toe cipher


View Answer pen cipher

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