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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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