Quantum Computing and Its Impact on Cryptography

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

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