Cryptography and Network Security
Cryptography and Network Security Quiz
Test your knowledge on cryptography and network security with this engaging quiz! Dive into various aspects of cryptographic algorithms, encryption techniques, and security principles.
Whether you're a student, a professional, or just a curious learner, this quiz will challenge your understanding and help you learn more about:
- Brute force attacks
- Symmetric and asymmetric encryption
- Algorithms like AES, DES, and RC5
1. In brute force attack, on average half of all possible keys must be tried to achieve success.
A) True
B) False
2. The estimated computations required to crack a password of 6 characters from the 26 letter alphabet is-
A) 308915776
B) 11881376
C) 456976
D) 8031810176
3. . Use Caesar’s Cipher to decipher "HQFUBSWHG WHAW"
A) ABANDONED LOCK
B) ENCRYPTED TEXT
c) ABANDONED TEXT
D) ENCRYPTED LOCK
4. The Index of Coincidence for English language is approximately
A) 0.068
B) 0.038
C) 0.065
D) 0.048
5. A symmetric cipher system has an IC of 0.041. What is the length of the key ‘m’?
A) 1
b) 3
C) 2
d) 5
6. Which of the following is true for the RC5 algorithm?
i) Has variable number of rounds
ii) Has fixed Key length
iii) High memory Requirements
iv) Uses only primitive computational operations commonly found on microprocessors
A) i) and iv)
B) i) ii) and iv)
C) iv)
D) i) ii) and iii)
7. The number of rounds in RC5 can range from 0 to _____________
A) 127
B) 63
C) 255
D) 31
8. Blowfish algorithm uses the Feistel Structure.
A) True
B) False
9. How many rounds does the AES-192 perform?
A) 10
B) 12
C) 14
D) 16
10. In the DES algorithm the Round Input is 32 bits, which is expanded to 48 bits via ____________
A) Scaling of the existing bits
B) Duplication of the existing bits
C) Addition of zeros
D) Addition of ones
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