Chapter 5 (Unit 3)

Front 1

Dynamic RAM requires frequent __________ to maintain its data content.

Back 1

refresh cycles

Front 2

The __________ rate is the speed at which data can be moved to or from a storage device over acommunication channel.

Back 2

data transfer

Front 3

Three standard optical storage media that are written only during manufacture are called __________ and__________.

Back 3

CD-ROM, DVD-ROM, BD

Front 4

__________, __________, ___________, and __________ are competing standards for rewritable DVDdiscs.

Back 4

DVD-RW, DVD+RW, DVD+RW DL, and DVD-RW DL

Front 5

The __________ of a hard disk drive generate or respond to a magnetic field.

Back 5

read/write heads

Front 6

Data stored on magnetic media for long periods of time might be lost because of _________ and__________.

Back 6

magnetic leakage, magnetic decay

Front 7

The contents of most forms of RAM are __________, making them unsuitable for long-term data storage.

Back 7

volatile

Front 8

__________ and __________ are promising new technologies for implementing NVM that promisesignificant increases in longevity.

Back 8

magnetoresistive RAM (MRAM), phase-change memory (PCM)

Front 9

__________ is a flash RAM technology that provides higher capacity than traditional 2D/planarflash RAM technology

Back 9

vertical flash RAM

Front 10

. __________ is typically stated in milliseconds for secondary storage devices and nanoseconds for primarystorage devices

Back 10

Access time

Front 11

The three components that are summed to calculate average access time for a disk drive are __________,__________, and __________.

Back 11

head-to-head switching time, track-to-track seek time, rotational delay

Front 12

In a magnetic or optical disk drive, a read/write head is mounted on the end of a(n) __________.

Back 12

access arm

Front 13

A(n) __________ mimics the behavior and physical size of a magnetic disk drive but has no moving parts.

Back 13

solid-state drive

Front 14

A(n) __________ is a series of sectors stored along one concentric circle on a platter.

Back 14

Track

Front 15

. The data transfer rate of a magnetic or optical disk drive can be calculated by dividing 1 by the drive’saccess time and multiplying the result by the __________.

Back 15

data transfer unit size

Front 16

__________, __________, and __________ are storage formats originally designed for music or videorecording that have been applied to computer data storage.

Back 16

CD-DA, DVD, BD

Front 17

Average access time can usually be improved by __________ files stored on a disk.

Back 17

defragmenting

Front 18

Modern desktop and laptop computers generally use memory packaged on small standardized circuitboards called __________.

Back 18

SIMMs or DIMMs

Front 19

The __________ of a magnetic or optical storage medium is the ratio of bits stored to a unit of the medium’s surface area

Back 19

areal density (or recording density or bit density)

Front 20

For most disk drives, the unit of data access and transfer is a(n) __________ or __________.

Back 20

block, sector

Front 21

Software programs stored permanently in ROM are called __________.

Back 21

firmware