Explanation:Rotational speeds of disks today range from 5400 rotations per minute (90 rotations per second) up to 15,000 rotations per minute (250 rotations per second), or, equivalently, 4 milliseconds to 11.1 milliseconds per rotation. 9. In Flash memory, the erase operation can be performed on a number of pages, called an _______, at once, and takes about 1 to 2 milliseconds.
A. Delete block
B. Erase block
C. Flash block
D. Read block
Answer:A
Explanation:Rotational speeds of disks today range from 5400 rotations per minute (90 rotations per second) up to 15,000 rotations per minute (250 rotations per second), or, equivalently, 4 milliseconds to 11.1 milliseconds per rotation. 9. In Flash memory, the erase operation can be performed on a number of pages, called an _______, at once, and takes about 1 to 2 milliseconds.
A. Delete block B. Erase block C. Flash block D. Read block
Explanation:The size of an erase block (often referred to as just “block” in flash literature) is usually significantly larger than the block size of the storage system. 10. Hybrid disk drives are hard-disk systems that combine magnetic storage with a smaller amount of flash memory, which is used as a cache for frequently accessed data.