Data Structures Algorithms-II MCQs

Page No. 118

Which of the following cipher replaces letters with symbols?


apolybius square ciper

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baffine cipher

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ccaesar cipher

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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

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bZEYQCOCM

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cZEYQCBROCM

✓


dZEYQCBROCM

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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

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dadditive cipher

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View Answer vigenere cipher

Which cipher is represented by the following function?


avigenere cipher

✓


bhill cipher

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ckeyword cipher

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drotor cipher

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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

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bWORLD

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cINDIA

✓


dAMERICA

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View Answer INDIA

Vigenere cipher is harder to decipher than keyword cipher.


atrue

✓


b false

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cA & B

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d None of the above

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View Answer true

Vigenere table consists of _________


a26 rows and 26 columns

✓


b26 rows and 1 column

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c1 row and 26 columns

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d27 rows and 27 columns

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Encryption in Vigenere cipher is done using _________


avigenere formula

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bvigenere cycle

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c vigenere square

✓


dvigenere addition

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View Answer vigenere square

Vigenere cipher is an example of ______________


amono-alphabetic cipher

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bpoly-alphabetic cipher

✓


ctransposition cipher

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dadditive cipher

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Which of the following is not true about atbash cipher?


ait is a mono alphabetic substitution cipher

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b it can only be used to encrypt hebrew alphabet

✓


cit is a special case of affine cipher

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dit is weaker than playfair cipher

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