CEA CHAPTER 6

Magnetic disks are the foundation of external memory on virtually all computer systems.

• True

• False

Flash memory becomes unusable after a certain number of writes.

• True

• False

Adjacent tracks are separated by _________.

• Sectors

• Gaps

• Pits

• Heads

In most contemporary systems fixed-length sectors are used, with _________ bytes being the nearly universal sector size.

• 64

• 128

• 256

• 512

A __________ disk is permanently mounted in the disk drive, such as the hard disk in a personal computer.

• Nonremovable

• Movable-head

• Double sided

• Removable

__________ is the standardized scheme for multiple-disk database design.

• RAID

• CAV

• CLV

• SSD

RAID level ________ has the highest disk overhead of all RAID types.

• 0

• 1

• 3

• 5

The areas between pits are called _________.

• Lands

• Sectors

• Cylinders

• Strips

Data are transferred to and from the disk in __________.

• Tracks

• Gaps

• Sectors

• Pits

Because data are striped in very small strips, RAID 3 cannot achieve very high data transfer rates.

• True

• False