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    Question

    What is

    blockchain?
    A A type of database used for storing large amounts of unstructured data Correct Answer Incorrect Answer
    B A decentralized and distributed digital ledger that records transactions across multiple computers Correct Answer Incorrect Answer
    C A data structure used for organizing data in a hierarchical manner Correct Answer Incorrect Answer
    D A security protocol used for encrypting sensitive information Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    A decentralized and distributed digital ledger that records transactions across multiple computers

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