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Quantum Computing and Its Impact on Cryptography - Quiz
Contributed by: Singh
  • 1. What is a qubit?
A) A classical bit used in regular computing.
B) A type of encryption algorithm.
C) A basic unit of quantum information.
D) A software language for quantum programming.
  • 2. How does quantum superposition differ from classical superposition?
A) Classical superposition is more stable.
B) Quantum superposition allows qubits to be in multiple states simultaneously.
C) Quantum superposition only applies to photon states.
D) Classical superposition involves physical waves.
  • 3. Which classical public-key encryption algorithm is vulnerable to quantum attacks?
A) RSA
B) AES
C) SHA-256
D) Diffie-Hellman
  • 4. What is post-quantum cryptography?
A) Cryptography that only quantum computers can decrypt.
B) Cryptography used after a successful quantum encryption.
C) Cryptography that runs on quantum networks.
D) Cryptography designed to be secure against quantum attacks.
  • 5. What is the theoretical advantage of quantum computers over classical ones in terms of solving certain problems?
A) Exponential speedup for some algorithms.
B) Faster at processing large datasets.
C) Linear speedup for all algorithms.
D) Better at solving purely mathematical problems.
  • 6. Which quantum algorithm is used for searching unsorted databases faster than classical algorithms?
A) Deutsch's algorithm
B) Grover's algorithm
C) Bernstein-Vazirani algorithm
D) Shor's algorithm
  • 7. What is the term for a quantum computer's ability to perform many calculations simultaneously?
A) Quantum parallelism
B) Quantum interference
C) Quantum superposition
D) Quantum entanglement
  • 8. How does quantum key distribution (QKD) ensure secure communication?
A) By using classical encryption algorithms with quantum networks.
B) By continuously changing encryption keys at a fast pace.
C) By relying on hardware-based encryption solutions.
D) By leveraging the principles of quantum mechanics for key exchange.
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