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Name:    Homework Seven Study Guide

True/False Indicate whether the sentence or statement is true or false.
T F	1.	RAID duplicates data, instructions, and information to improve data reliability.
T F	2.	A typical CD-ROM holds about 650 MB of data, instructions, and information.
T F	3.	With a CD-R, all of the disc must be written on at the same time.
T F	4.	Using a CD-RW disc, it is easy to backup large files from a hard disk.
T F	5.	Not only is the storage capacity of a DVD-ROM less than a CD-ROM, a DVD-ROM’s quality also is far inferior to that of a CD-ROM.
T F	6.	Although the size and shape are different, a DVD-ROM stores data, instructions, and information in the same manner as a CD-ROM and thus has the same storage capacity.
Multiple Choice Identify the letter of the choice that best completes the statement or answers the question.
A B C D	7.	Examples of storage media are all of the following except __________. a. floppy disks c. compact disks b. expansion cards d. tape
A B C D	8.	Storage devices access items in __________. a. billionths of a second (nanoseconds) c. thousandths of a second (milliseconds) b. millionths of a second (megaseconds) d. hundredths of a second (centiseconds)
A B C D	9.	In the early 1970s, __________ introduced the floppy disk as a new type of storage. a. Intel c. IBM b. AT&T d. Microsoft
A B C D	10.	The average time it takes a current floppy disk drive to locate an item on a disk is __________ of a second. a. 500 milliseconds or 1/2 c. 167 milliseconds or 1/6 b. 250 milliseconds or 1/4 d. 84 milliseconds or 1/12
A B C D	11.	As shown in the accompanying figure, a disk’s storage locations consist of pie-shaped sections, which break the tracks into small arcs called __________. a. backups c. shutters b. clusters d. sectors
A B C D	12.	A floppy disk’s write-protect notch affects the floppy disk drive’s capability of __________. a. writing on the disk b. reading from the disk c. writing on the disk and reading from the disk d. neither writing on the disk nor reading from the disk
A B C D	13.	Hard disks provide for __________ access times than floppy disks. a. lesser storage capacities and much slower b. greater storage capacities but much slower c. lesser storage capacities but much faster d. greater storage capacities and much faster
A B C D	14.	Most manufacturers guarantee their hard disks to last somewhere between __________ years. a. one and three c. five and eight b. three and five d. eight and ten
A B C D	15.	The contents of __________ only can be read; that is, the contents cannot be erased or modified. a. CD-ROMs c. CD-RWs b. CD-Rs d. all of the above
A B C D	16.	A 48X CD-ROM drive has a data transfer rate of __________. a. 48 (48 x 1) KB per second or .04 MB per second b. 2,400 (48 x 50) KB per second or 2.4 MB per second c. 4,800 (48 x 100) KB per second or 4.8 MB per second d. 7,200 (48 x 150) KB per second or 7.2 MB per second
A B C D	17.	A DVD-RW is similar to a __________, except it has storage capacities up to 4.7 GB. a. CD-R c. CD-RW b. floppy disk d. hard disk
A B C D	18.	On larger computers, tape cartridges are mounted in a separate cabinet called a __________. a. tape depository c. tape library b. tape dispenser d. tape repository
A B C D	19.	Many digital cameras and other handheld devices use __________. a. 35 millimeter film c. network interface cards b. memory cards d. smart cards
A B C D	20.	__________ store microscopic images of documents on roll or sheet film. a. Microfilm and microfiche c. CD-ROMs and DVD-ROMs b. Floppy disks and hard disks d. Smart cards and memory cards