Cryptography CYS 1
Authored by Udhayakumar Shanmugam
Computers
University
Used 1+ times
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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
This is an electro-mechanical device used by British cryptologists to help decipher encrypted secret messages during World War
Bombe machine
Enigma machine
Lorenz ciphers machine
Turing Machine
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Substitution cipher is a type of .............
Symmetric key Encryption
Asymmetric key Encryption
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
High-throughput applications and Wireless communications uses........................................
Stream Ciphers
Block Ciphers
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is the NOT correct example encryption algorithm
AES--> Symmetric Encryption
RSA --> Asymmetric Encryption
DES--> Symmetric Encryption
Diffie Hellman --> Asymmetric Encryption
3DES--> Symmetric Encryption
ECC --> Asymmetric Encryption
Diffie Hellman--> Symmetric Encryption
RC4 --> Asymmetric Encryption
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Plain text : STOP GLOBAL WARMING
Cipher text : RSNO FKNAZK VZQLHMF
What is the Key if the plain text is encrypted using caeser cipher
1
2
23
20
6.
FILL IN THE BLANKS QUESTION
1 min • 1 pt
Decode the Rail fence cipher
ATBAN5MIAYENTO22RCRI0
key height is 3
(a)
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Plain text: cryptography
identify the key size if the cipher text is: CPGPRTRHYOAY
3
5
4
2
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