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    Question

    Distributed transactions typically use which protocol

    for atomicity?
    A Two-Phase Commit (2PC) Correct Answer Incorrect Answer
    B Three-Way Handshake Correct Answer Incorrect Answer
    C Paxos Consensus Correct Answer Incorrect Answer
    D Leader Election Correct Answer Incorrect Answer
    E Raft Correct Answer Incorrect Answer

    Solution

    2PC ensures all nodes agree to commit or abort. Paxos/Raft are for consensus, not ACID atomicity.

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