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In multiple-granularity, locks are acquired ___ and locked down ¬___, respectively

19. In multiple-granularity, locks are acquired ___ and locked down ¬___, respectively.

1. Top-down, Bottom-up
2. Bottom-up, Top-down
3. Top-down
4. Bottom-up

Answer: A) Top-down, Bottom-up

Explanation:

In multiple-granularity, locks are acquired top-down and locked down bottom-up, respectively.