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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