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1. What is a qubit?
A normal byte stored in RAM
A quantum unit of information that can exist in superposition
A compressed password
A firewall rule used by quantum networks
2. What is post-quantum cryptography?
Cryptography that only works inside quantum processors
A faster version of classical compression
A method for hiding passwords in images
Cryptography designed to resist attacks from future quantum computers
3. What is the purpose of a digital signature on software?
To hide the source code completely
To prove authenticity and detect tampering
To make the program run faster
To remove all antivirus warnings forever
4. Why publish a SHA-256 hash for a downloadable file?
To let users verify that the file was not altered
To replace encryption
To make the file smaller
To automatically install the file
5. What does 'harvest now, decrypt later' mean?
Encrypting files today so they expire later
Compressing files before sending them
Deleting old encryption keys after download
Collecting encrypted data today to decrypt it in the future with stronger technology
6. What does Grover's algorithm mainly reduce?
The speed of internet connections
The cost of brute-force search against symmetric keys and hashes
The need for digital certificates
The size of encrypted files
7. What is quantum entanglement?
A classical backup method
A relationship where quantum particles share correlated measurement outcomes
A type of malware protection
A way to compress executable files
8. What does quantum superposition mean?
A file is encrypted twice with the same key
A quantum system can represent multiple possible states before measurement
A password is stored in two databases
A program runs automatically after download
9. What is the main mission of quantum-safe software?
To remove the need for cybersecurity
To replace all websites with blockchain systems
To make every computer a quantum computer
To protect data against both current and future quantum-era threats
10. Which quantum algorithm is famous for threatening RSA and elliptic-curve cryptography?
Shor's algorithm
Dijkstra's algorithm
Grover's algorithm
Bellman's algorithm
11. Which post-quantum standard is based on CRYSTALS-Kyber?
ML-KEM
RSA-2048
DES
SHA-1
12. Which post-quantum standard is based on CRYSTALS-Dilithium?
RC4
ML-DSA
AES-GCM
MD5
13. Why is AES-256 considered useful in a quantum-aware security strategy?
Because it is based on RSA
Because it is immune to all attacks forever
Because it does not use keys
Because Grover's algorithm still leaves it with a large security margin
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