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  1. 1. What is a key requirement for a secure hash function:
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  2. 2. What is a characteristic of a centralized database architecture?
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  3. 3. What is a key feature of a decentralized database architecture?
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  4. 4. What is a defining characteristic of a distributed database system?
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  5. 5. What best describes a hash in the context of computer science and cryptography?
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  6. 6. Which component is responsible for maintaining a chronological and unchangeable record of transactions in a blockchain?
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  7. 7. What is a key differentiator between a blockchain and a traditional database?
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  8. 8. Where was blockchain technology first implemented?
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