Data Structures Algorithms-II MCQs

Page No. 135

Which letter of the English alphabet has the shortest code in Morse Code?


a A

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b C

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cB

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dE

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View Answer E

Which of the following statement is not true regarding columnar transposition cipher?


ait is a weak cipher

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bprobability of error is high while deciphering

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cit cannot be combined with other ciphers

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dit is a traditional symmetric cipher

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How many rows will the letters of the plain text occupy in the table, that is used for encryption in columnar transposition cipher when a given keyword is “SECRET” and plain text is “SANFOUNDRY”?


a1

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b2

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c3 years

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d4

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View Answer 2

What will be the encrypted text corresponding to plain text “CLASSIFIED” using columnar transposition cipher with a keyword as “GAMES”?


aLFDSIASECI

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b SECIAISDFL

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cCILFAISESD

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dLFSECIAISD

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View Answer LFSECIAISD

How many columns do we need to have in the table, that is used for encryption in columnar transposition cipher when a given keyword is “SECRET” and plain text is “SANFOUNDRY”?


a4

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b5

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c6

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d7

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View Answer 6

Columnar transposition cipher is harder to crack as compared to double transposition cipher?


atrue

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bFalse

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cA & B

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d None of these

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View Answer False

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


aroute cipher

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bcolumnar transposition cipher

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cmyszkowski cipher

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dadditive cipher

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View Answer additive cipher

Which of the following cipher is formed by applying columnar transposition cipher twice?


aRail Fence cipher

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bRoute cipher

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cDouble transposition cipher

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dOne time pad

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Which of the following ciphered text would have NOT used transposition cipher for encryption of the plain text “CIPHER”?


aEPIHRC

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bEHIPCR

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cDTIPRC

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dHRIPEC

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View Answer DTIPRC

Columnar cipher falls under the category of?


amono-alphabetic cipher

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bpoly-alphabetic cipher

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ctransposition cipher

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dadditive cipher

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View Answer transposition cipher

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