Data Structures Algorithms-II MCQs

Page No. 117

What is the meaning of cipher in computer terminology?


a an algorithm that performs encryption

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ban algorithm that generates a secret code

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can algorithm that performs encryption or decryption

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da secret code

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What is common between affine cipher and pigpen cipher.


aboth are mono alphabetic substitution cipher

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bboth are poly alphabetic substitution cipher

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cboth can be cracked using frequency analysis

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dboth are transposition cipher

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


acat

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bhat

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cdog

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drat

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View Answer cat

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


a_| |_ >

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b|_ > |_

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c_| |_<

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d|_< _|

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View Answer _| |_ >

Pigpen cipher is not susceptible to frequency analysis.


aTrue

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bFalse

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cA & B

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d None of the above

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View Answer False

Pigpen cipher is less secure than a vigenere cipher.


aTrue

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b False

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cA & B

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d None of the above

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View Answer True

Pigpen cipher is an example of?


aMono alphabetic substitution cipher

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bTransposition cipher

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cPoly alphabetic substitution cipher

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dGeometric substitution cipher

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


avigenere cipher

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bone time pad cipher

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cplay fair cipher

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dpigpen cipher

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View Answer pigpen cipher

Which of the following cipher was used by freemasons?


aVigenere cipher

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bAutokey cipher

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cPigpen cipher

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dHill cipher

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View Answer Pigpen cipher

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


apen cipher

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bfreemason’s cipher

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cnapoleon cipher

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d tic-tac-toe cipher

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View Answer pen cipher

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