Data Structures Algorithms-II MCQs

Page No. 130

What will be the ciphered text corresponding to “ALGORITHM” if running key cipher is used for encryption with keyword as “DATASTRUCTURE”?


aLDJOZOBBK

✖


bDLZOJBKBO

✓


cZOLDJBKBO

✖


dOLZBJDKBO

✖


View Answer DLZOJBKBO

What will be the ciphered text corresponding to “SANFOUNDRY” if running key cipher is used for encryption with keyword as “ONCEUPONATIME”?


aGNPJIJBQRR

✓


bGNPIJJBRRQ

✖


cGPNJJOBQRR

✖


dGJJNPOBQRI

✖


View Answer GNPJIJBQRR

Running key cipher is a variation of?


avigenere cipher

✓


bautokey cipher

✖


chill cipher

✖


droute cipher

✖


View Answer vigenere cipher

Running key cipher is a transposition cipher.


atrue

✖


bFalse

✓


cA & B

✖


d None of these

✖


View Answer False

What will be the plain text corresponding to cipher text “KEPWSN” if running key cipher is used with keyword as “SANFOUNDRY”?


aSECRET

✓


bQWERTY

✖


cINDIAN

✖


dFRIEND

✖


View Answer SECRET

Running key cipher is harder to decipher than keyword cipher.


atrue

✓


bFalse

✖


cA & B

✖


d None of these

✖


View Answer true

Tabula recta consists of _______________


a26 rows and 26 columns

✓


b26 rows and 1 column

✖


c1 row and 26 columns

✖


d27 rows and 27 columns

✖



Which of the following is a difference between running key cipher and vigenere cipher?


athey use different tables for encryption

✖


bvigenere cipher is poly alphabetic whereas running key cipher is mono alphabetic

✖


cin vigenere cipher the key is repeated whereas in running key cipher key is not repeated

✓


dvigenere cipher was used in ancient time whereas running key cipher is used in modern world

✖



Which of the following cipher uses a key book or a key text instead of a keyword?


avigenere cipher

✖


bautokey cipher

✖


crunning key cipher

✓


daffine cipher

✖


View Answer running key cipher

Encryption in running key cipher is done using _______________


arunning key table

✖


bvigenere cycle

✖


ctabula recta

✓


dany table provided by the person performing the encryption

✖


View Answer tabula recta

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