Terms and QuesAnswers Chap008

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Computing Essentials 2008

Chapter 8: Secondary Storage

Key TermsKey Term Definition

access speed (214)Measures the amount of time required by the storage

device to retrieve data and programs.

Blu-Ray (BD) (222) different optical format than either the !"! or the #!

!"! and have a capacity of 2$ to $0 gigabytes%

CD (compact disc) (220) &ne of the most 'idely used optical formats.

CD-R (CD-recordable) (220) C! that can be 'ritten to only once.CD-ROM (compact discread

only memory) (220) C! that cannot be 'ritten on or erased by the user.

CD-ROM u!ebo" (22#)(rovide automatic access to a large collection or library of

optical dis)s.

CD-R$ (compact discre%ritable) (221)

C! that can be 'ritten to many times. *See also

erasable optical disc+

cylinder (21&) part of a hard dis) that runs through each trac) of a

stac) of platters.

density (21')#o' tightly the bits *electromagnetic charges+ can be

pac)ed ne,t to one another on a dis)ette.

direct access (22&)-he type of storage and retrieval system used by magnetic

and optical discs.

dis! cacin (21*)

hard dis) performance enhancement that improves

processing by acting as a temporary highspeed holding

area bet'een a secondary storage device and the C(/.

D+D (diital ,ersatile disc ordiital ,ideo disc) (221)

a ne'er optical format that has replaced C!s as the

standard similar to C!s e,cept that more data can be

pac)ed into the same amount of space.

D+D player (221) !"! 1&M drive

D+D R (D+D recordable) (221) type of !"! 'riteonce format

D+D -R (D+D recordable) (221) type of !"! 'riteonce format

D+D-R.M (D+D random-accessmemory) (221) type of !"! re'riteable format

D+D-ROM (D+Dread onlymemory) (221)

!"! format that the user cannot 'rite to

D+D-ROM u!ebo" (22#)(rovide automatic access to a large collection or library of

optical dis)s.D+D R$ (D+D re%ritable)

(221) type of !"! re'riteable format

D+D -R$ (D+D re%ritable)(221)

type of !"! re'riteable format

enterprise storae system(22/)

type of system that large organiations use to promote

efficient and safe use of data across the net'or)s 'ithin

their organiations.

erasable optical disc (221) C! that can be 'ritten to many times. *See also CD-R$(compact disc re%ritable)+

le compression (21*)

hard dis) performance enhancement that increases

storage capacity by reducing the amount of space required

to store data and programs.

le decompression (21*) 1ebuilding a file that has been compressed

le ser,er (22#) dedicated computer 'ith very large storage capacity that

provides users access to fast storage and retrieval of data.

as memory card (22)Credit card3sied solidstate storage devices 'idely used

in noteboo) computers.

4ey -erms (age 5 of 6


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oppy dis! (214)

portable or removable storage medium that uses flat

circular pieces of Mylar plastic that have been coated 'ith

a magnetic material.

oppy-dis! cartride (2143 21')

(ortable storage devices that are able to store more

information% and are thic)er than a dis)ette. *see also high

capacity dis)+

oppy dis! dri,e (DD) (214)Stores data and programs by altering the electromagneticcharges on the dis)7s surface to represent 5s and 0s

ard dis! (21&)

device that saves files by altering the magnetic charges

of the dis)7s surface% has greater capacity than a dis)ette%

and faster access time.

ard-dis! cartride (21/)Easy to remove cassettes 'hose capacity is only limited by

the number of cartridges.

ard-dis! pac! (21#)1emovable storage device used to store massive amounts

of information.

5D D+D (i-denition D+D)(222)

-his format is very similar to !"! e,cept that its storage

capacity is much greater.

ead cras (21&)

hen a hard dis)7s read9'rite head ma)es contact 'ith the

hard dis)7s surface or 'ith particles on its surface resulting

in a catastrophic loss of data.

i de6 (i denition) (222) -he ne,t generation of optical disc

i-capacity dis! (21')

(ortable storage devices that are able to store more

information% and are thic)er than a dis)ette. *see also

floppy dis) cartridge+

internal ard dis! (21&) magnetic secondary storage device that is located insidethe system unit.

7nternet ard dri,e (22&)Special service sites on the eb provide users 'ithstorage.

label (21')/sually on the front of a dis)ette and provides users 'ith

an area to 'rite or document the contents of the dis).land (220) lat areas that optical discs use to represent 5s and 0s.

manetic tape (22&)

rites data and programs by altering the electromagnetic

charges on a recording surface and uses a sequential access

method to store and retrieve it.

manetic tape reel (22/)

-ype of tape that 'as used by mainframes and is typically

592 inch 'ide and 5592 miles long and provides massive

storage capacity.

manetic tape streamer (22/)-he type of magnetic tape technology used by mainframes

today.

mass storae (22/)-he tremendous amount of secondary storage required by

large organiations.

mass storae de,ices (22/)Specialied highcapacity secondary storage devicesdesigned to meet storage requirements of large

organiations.

media (214) n actual physical material that holds data and programs.

optical disc (220) storage device that uses a laser beam to alter the surface

of a plastic or metallic disc to represent data

optical disc dri,e (220) device 'ith a laser that pro;ects a tiny beam of light on a

disc to reflect the light to determine a pit or land.

orani8ational 7nternet storae(22#)

#ighspeed


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9C Card ard dis! (21/)

Credit cardsie harddis) cartridges available for

noteboo) computers 'ith typical capacities

up to $ gigabytes.

pit (220)-he bumpy areas that optical discs use to represent 5s and

0s.

primary storae (214)

1M or memory% 'here data is stored before being

processed.

R.7D system (22#)

system that enhances organiational security by

constantly ma)ing bac)up copies of files moving across

the organiation7s net'or)s.

redundant array o6 ine"pensi,edis!s (R.7D) (21*)

improve performance by e,panding e,ternal storage%

improving access speed% and providing reliable storage.

secondary storae (214) (rovides permanent or nonvolatile storage

secondary storae de,ice (214)#ard'are 'here data and programs can be retained after

the computer has been shut off. *see also storage device+

sector (21') 'edgeshaped sections of a trac)% part of ho' files are

stored and organied on a fle,ible dis)

se:uential access (22&)-he type of storage and retrieval system used by magnetic

tape.

sutter (21')(art of a dis)ette that slides to the side to e,pose the

recording surface.

so6t%are enineer (22#) computer professional 'ho analyes users7 needs and

creates application soft'are.

solid-state storae (22) Storage devices have no moving parts.

storae de,ice (214)

#ard'are 'here data and programs can be retained after

the computer has been shut off. *see also secondary

storage device+

tape cartride (22/)-he type of magnetic tape technology used by mainframes

today

tape library (22#) device that provides automatic access to data archivedon a large collection or library of tapes.

trac! (21')1ings of concentric circles 'ithout visible grooves% part of

ho' files are stored and organied on a fle,ible dis)

;=.

%rite-protection notc (21') slide on a dis)ette that opens and closes. hen closed%

files can be saved to the dis). hen open% files cannot.

4ey -erms (age ? of 6


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Crossword Puzzle Answers:

AcrossNum. Clue Answer

$ 7mpro,es ard-dis! per6ormance by anticipatindata needs=

Disk caching

6 $eb-based storae= Internet drie

@ 7n,isible %ede-saped di,ision o6 a trac!= !ector

8 9ortable and remo,able storae de,ice= "lo##y

50 Runs trou eac trac! o6 a stac! o6 platters= Cylinder

55 5o% titly te bits can be pac!ed ne"t to eacoter=

Density

DownNum. Clue Answer

5 Rin o6 concentric circles %itout ,isible roo,es= Track

2 >rouped dis! dri,es treated as one ard dis! by

te computer system=

$AID

? Measures te amount o6 time re:uired to retrie,edata=

Access time

A Represent 1s and 0s= Pits and lands

B Dis! %it '00 times te storae as a standardoppy=

%i#

Num &ulti#le Choice

Answers

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Terms and QuesAnswers Chap008