Vigenere Cipher Multiple choice Questions and Answers (MCQs)

Vigenere Cipher Multiple choice Questions and Answers (MCQs)

 Question 1 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the meaning of cipher in cryptography?
 A an algorithm that performs encryption B an algorithm that generates a secret code C an algorithm that performs encryption or decryption D a secret code
Question 1 Explanation:
Cipher is an algorithm for performing encryption or decryption. In cryptography, a set of defined steps are followed to generate ciphers. These are necessary to prevent data breach.

 Question 2 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Vigenere cipher is an example of .....
 A mono-alphabetic cipher B poly-alphabetic cipher C transposition cipher D additive cipher
Question 2 Explanation:
Vigenere cipher is a substitution cipher. It falls under the category of poly alphabetic cipher as it uses multiple substitution at different positions in order to cipher the plain text.

 Question 3 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Encryption in Vigenere cipher is done using .....
 A vigenere formula B vigenere cycle C vigenere square D vigenere addition
Question 3 Explanation:
Encryption of plain text using vigenre cipher is done by making use of vigenere table. It is also known as vigenere square.

 Question 4 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following correctly defines poly alphabetic cipher?
 A a substitution based cipher which uses multiple substitution at different positions B a substitution based cipher which uses fixed substitution over entire message C a transposition based cipher which uses multiple substitution at different positions D a transposition based cipher which uses fixed substitution over entire message
Question 4 Explanation:
Poly alphabetic cipher is a type of substitution cipher. It uses multiple substitution at different positions in order to cipher the plain text.

 Question 5 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following is not a type of poly alphabetic cipher?
 A Rotor cipher B Hill cipher C One time pad cipher D Multiplicative cipher
Question 5 Explanation:
In poly alphabetic cipher each symbol of plain text is replaced by a different cipher text regardless of its occurrence. Out of the given options only multiplicative cipher is not a poly alphabetic cipher.

There are 5 questions to complete.