T F 1. Magnetic disks are the foundation of external memory on virtually
all computer systems.
T F 2. During a read or write operation, the head rotates while the
platter beneath it stays stationary.
T F 3. The width of a track is double that of the head.
T F 4. There are typically hundreds of sectors per track and they may be
either fixed or variable lengths.
T F 5. A bit near the center of a rotating disk travels past a fixed point
slower than a bit on the outside.
T F 6. The disadvantage of using CAV is that individual blocks of data can
only be directly addressed by track and sector.
T F 7. A removable disk can be removed and replaced with another disk.
T F 8. The head must generate or sense an electromagnetic field of
sufficient magnitude to write and read properly.
T F 9. The transfer time to or from the disk does not depend on the
rotation speed of the disk.
T F 10. RAID is a set of physical disk drives viewed by the operating
system as a single logical drive.
T F 11. RAID level 0 is not a true member of the RAID family because it
does not include redundancy to improve performance.
T F 12. Because data are striped in very small strips, RAID 3 cannot
achieve very high data transfer rates.
T F 13. The SSDs now on the market use a type of semiconductor memory
referred to as flash memory.
T F 14. SSD performance has a tendency to speed up as the device is used.
T F 15. Flash memory becomes unusable after a certain number of writes.
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