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    Question

    What is a

    blockchain?
    A A single server hosting a database Correct Answer Incorrect Answer
    B A distributed ledger technology Correct Answer Incorrect Answer
    C A cloud-based file storage system Correct Answer Incorrect Answer
    D An algorithm for encryption Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    A blockchain is a distributed and decentralized digital ledger technology. It is a chain of blocks that store data in a secure, transparent, and tamper-resistant manner across a network of computers.

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