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    Question

    In indexing, which tree is most commonly used for

    disk-based indexing because it minimizes disk seeks and keeps nodes dense?
    A AVL tree Correct Answer Incorrect Answer
    B Binary search tree Correct Answer Incorrect Answer
    C B+ tree Correct Answer Incorrect Answer
    D Red-black tree Correct Answer Incorrect Answer
    E Skip list Correct Answer Incorrect Answer

    Solution

    B+ trees are balanced, have high branching factor, and store keys in leaves enabling efficient disk-block utilization and range queries.

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