Câu 8: C2090-614: DB2 10.1 Advanced DBA for Linux UNIX and Windows

What advantage do block-based buffer pools offer compared to regular buffer pools?

1. A. They improve the performance of sequential prefetching by reading contiguous pages from disk and writing them into contiguous pages in a buffer pool. — đáp án hiện tại
2. B. They improve the performance of random I/O by reading non-contiguous pages from disk and writing them into near-contiguous free space in a buffer pool.
3. C. They improve the performance of vectored reads by retrieving non-contiguous pages from disk, combining them into extent-sized blocks, and writing the blocks into contiguous pages in a buffer pool.
4. D. They improve the performance of scattered writes by retrieving non-contiguous pages from a buffer pool, combining them into extent-sized blocks, and writing