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