CS627 Quiz 1 Set 2

Q1. Which type of cipher uses a keyword to encrypt plaintext?

1. Caesar cipher
2. Vigenere cipher
3. Rail fence cipher
4. One-time pad cipher

Correct answer: Vigenere cipher

Q2. What is the main purpose of password hashing?

1. Protecting passwords from unauthorized access
2. Generating complex passwords
3. Making passwords difficult to remember
4. Storing passwords in plaintext format

Correct answer: Protecting passwords from unauthorized access

Q3. The reversibility of the Feistel Network allows for:

1. Protection against brute-force attacks
2. Efficient encryption and decryption
3. High-speed data transmission
4. Easy key generation

Correct answer: Efficient encryption and decryption

Q4. What is the minimum key length required for RSA encryption?

1. 1024 bits
2. 56 bits
3. 128 bits
4. 512 bits

Correct answer: 1024 bits

Q5. What is the purpose of cryptography?

1. To provide a way to communicate without encryption
2. To provide entertainment to people
3. To provide secure communications in the presence of an adversary/attacker
4. To provide a way to store data without encryption

Correct answer: To provide secure communications in the presence of an adversary/attacker

Q6. What does RBAC stand for?

1. Resource-Based Access Control
2. Role-Based Authorization Control
3. Role-Based Access Control
4. Restricted-Budget Access Control

Correct answer: Role-Based Access Control

Q7. AAA stands for:

1. Access and Accounting Audit
2. Authentication, Authorization, and Accounting
3. Authentication, Audit, and Access control
4. Access and Authorization Audit

Correct answer: Authentication, Authorization, and Accounting

Q8. Which type of cipher replaces each letter with another letter based on a fixed shift value?

1. Caesar cipher
2. Vigenere cipher
3. Rail fence cipher
4. One-time pad cipher

Correct answer: Caesar cipher

Q9. Which of the following processes verifiy the identity of a user?

1. Access control
2. Authentication
3. Accounting
4. Authorization

Correct answer: Authentication

Q10. Which type of encryption uses the same key for both encryption and decryption?

1. Steganography
2. Hashing
3. Symmetric encryption
4. Asymmetric encryption

Correct answer: Symmetric encryption