
Cryptography DES Quiz

Quiz
•
Computers
•
University
•
Medium
Manila Auto
Used 2+ times
FREE Resource
9 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does DES stand for?
Data Encoding System
Dynamic Encryption Standard
Digital Encryption System
Data Encryption Standard
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the block size of DES?
64 bits
256 bits
128 bits
32 bits
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many rounds of encryption does DES use?
8
16
4
32
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the size of the key in DES?
56 bits
64 bits
128 bits
32 bits
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What type of encryption algorithm is DES?
Symmetric key encryption
Asymmetric key encryption
Public key encryption
Hashing algorithm
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many subkeys are generated in the key generation process of DES?
16
32
8
4
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the size of the input to the key generation process in DES?
64 bits
256 bits
32 bits
128 bits
8.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the size of the output from the key generation process in DES?
128 bits
64 bits
56 bits
48 bits
9.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of the permutation in the key generation process of DES?
To create a subkey for encryption and decryption
To compress the key
To increase the key length
To generate random numbers
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