CHAPTER 10: Computer Peripherals

Question 1

All components comprising a computer system except for the ________ , are considered peripherals.

a) CPU
b) CPU and memory
c) CPU, memory, and power source
d) CPU, memory, disk drives and power source

Answer 1

c) CPU, memory, and power source

Question 2

Storage not immediately available to the CPU is referred to as

a) cloud storage.
b) off-line storage.
c) network storage.
d) secondary storage.

Answer 2

d) secondary storage.

Question 3

Most of the access time specified for secondary storage devices consists of

a) seek time.
b) latency time.
c) transfer time.
d) rotational delay.

Answer 3

a) seek time.

Question 4

In technical specifications for flash memory, the read/write block is called a

a) page.
b) lump.
c) chunk.
d) paragraph.

Answer 4

a) page.

Question 5

On a modern hard disk, what is the typical size of a block of data?

a) 64 bytes
b) 128 bytes
c) 512 bytes
d) 1024 bytes

Answer 5

c) 512 bytes

Question 6

With the hard drive read/write head in a fixed position, it traces out a circle on the disk surface as the disk rotates; this circle is known as a

a) page.
b) block.
c) track.
d) cluster.

Answer 6

c) track.

Question 7

When a disk drive has multiple platters, the heads on each surface all line up. The set of tracks for all the surfaces form a geometric shape similar to a

a) bottle.
b) ellipse.
c) sphere.
d) cylinder.

Answer 7

d) cylinder.

Question 8

In a disk drive where the drive motor turns at constant angular velocity, which is true of the linear velocity?

a) inner tracks move the fastest
b) outer racks move the fastest
c) middle tracks move the fastest
d) all tracks move at the same speed

Answer 8

b) outer racks move the fastest

Question 9

The time it takes for the hard-disk read/write head to move from one track to another is called

a) latency. .
b) seek time.
c) flight time.
d) arrival time.

Answer 9

b) seek time.

Question 10

Once the hard-disk read/write head is located over the desired track, the read/write operation must wait for the disk to rotate to the beginning of the correct sector. This time is called

a) seek time.
b) arrival time.
c) transfer time.
d) rotational latency time.

Answer 10

d) rotational latency time.

Question 11

The time required to transfer one block of data is called as the

a) seek time.
b) arrival time.
c) transfer time.
d) rotational latency time.

Answer 11

c) transfer time.

Question 12

What system performance attribute is most increased by using a redundant array of independent disks (RAID)?

a) System reliability
b) System accessibility
c) System serviceability
d) System maintainability

Answer 12

a) System reliability

Question 13

In a mirrored array with 4 disks, each of the disks stores exactly the same data. The access time for a multiblock read is reduced by a factor of about ______.

a) two
b) four
c) eight
d) sixteen

Answer 13

b) four

Question 14

A special fault-tolerant computer system uses an array of 3 disks. The following logic is used to detect errors: If the data from all three disks is identical, then it is safe to assume that the integrity of the data is acceptable. If the data from one disk differs from the other two, then accept the data where both match and flag the other as an error. This logic is known as

a) disk logic.
b) majority logic.
c) difference logic.
d) greater-part logic.

Answer 14

b) majority logic.

Question 15

A mirrored array requires a minimum of _________ disk drives.

a) two
b) three
c) four
d) five

Answer 15

a) two

Question 16

The technique used for storage and retrieval in an LTO formatted data cartridge is called

a) data torrent.
b) LTO tasking.
c) data continuity.
d) data streaming.

Answer 16

d) data streaming.

Question 17

In terms of the ability to see detail in a display, a more interesting measure of resolution is the

a) pixel count.
b) pixel density.
c) pixel intensity.
d) pixel concentration.

Answer 17

b) pixel density.

Question 18

Displays that use 256 (Red) × 256 (Green) × 256 (Blue) different colors on the screen is sometimes described as a

a) true color system.
b) virtual color system.
c) ultra high density system.
d) high density color system.

Answer 18

a) true color system.

Question 19

The number of bits used to represent colors in an image is known as

a) color depth.
b) color length.
c) color strength.
d) color intensity.

Answer 19

a) color depth.

Question 20

A proprietary standard, developed by Microsoft to render 2-D and 3-D objects is known as

a) OpenGL.
b) DirectX.
c) ActiveX.
d) OpenSource.

Answer 20

b) DirectX.

Question 21

An International standard maintained by a non-profit consortium to render 2-D and 3-D objects is known as

a) OpenGL.
b) DirectX.
c) ActiveX.
d) OpenSource.

Answer 21

a) OpenGL.

Question 22

A key to the efficient operation of a GPU is the ability to dispatch instructions to the CPU cores in rapid succession, a process commonly called

a) flowing.
b) cramming.
c) smoothing.
d) streaming.

Answer 22

d) streaming.

Question 23

_________ is a standard GPU programming interface for general-purpose parallel programming that is implemented on a number of GPUs from different vendors.

a) OpenX
b) DirectX
c) OpenCL
d) ActiveX

Answer 23

c) OpenCL

Question 24

With the exception of the Cell Engine, current GPUs are generally based on maximizing the number of operations that can take place at the same time, or ______________.

a) serialization
b) concurrency
c) parallelization
d) synchronization

Answer 24

c) parallelization

Question 25

One of the main disadvantages of active matrix LCDs is that they

a) consume a lot of power.
b) have poor viewing angles.
c) are expensive and difficult to manufacture.
d) are lower quality than a passive matrix display.

Answer 25

c) are expensive and difficult to manufacture.

Question 26

Which display technology consists of a thin display panel that contains red, green, and blue LEDs for each pixel with transistors for each LED that generate electrical current to light the LED?

a) CRT
b) LCD
c) FED
d) OLED

Answer 26

d) OLED

Question 27

Which of the following printing technologies was derived from xerography?

a) LED printers
b) Laser printers
c) Ink-jet printers
d) Impact printers

Answer 27

b) Laser printers

Question 28

Which of the following printing technologies boils ink in a nozzle to spray a tiny droplet onto the paper?

a) LED printers
b) Laser printers
c) Ink-jet printers
d) Impact printers

Answer 28

c) Ink-jet printers

Question 29

When a key is pressed on the keyboard, a binary code called a(n) ______ is sent to the controller.

a) octal code
b) scan code
c) check code
d) ASCII code

Answer 29

b) scan code

Question 30

What kind of data is represented by a bar code?

a) BCD
b) Numeric
c) Alphabetic
d) Alphanumeric

Answer 30

d) Alphanumeric

Question 31

How does Quick Response software isolate the Quick Response (QR) code from other parts of an image?

a) QR software compares images to a list of known images.
b) QR software uses 2D mapping technology to read the QR code.
c) QR software requires the image capture device be perpendicular to the QR code.
d) QR software positions and sizes the image with the aid of large squares in three corners and a smaller square set in from the fourth corner.

Answer 31

d) QR software positions and sizes the image with the aid of large squares in three corners and a smaller square set in from the fourth corner.

Question 32

With voice input data, the translation process requires the conversion of voice data into sound patterns known as

a) phonemes.
b) sound bytes.
c) sound slices.
d) part-of-speech.

Answer 32

a) phonemes.

Question 33

The technology necessary to interpret audio data as voice input and to translate the data into alphanumeric form has improved in recent years. The translation process is aided by

a) Pulse Code Modulation (PCM) techniques that replace less precise analog modulation.
b) Improvements in digitizing audio data that arose from advances in recorded music.
c) Having the user pause between words to eliminate problems of continuous speech.
d) Pronunciation rules, grammar rules, and a dictionary of a particular language.

Answer 33

d) Pronunciation rules, grammar rules, and a dictionary of a particular language.

Question 34

The capability of Smartphones to communicate with low power radio-frequency magnetic fields in close proximity with similar components is called

a) local field communications.
b) near field communications.
c) narrow field communications
d) close proximity communications.

Answer 34

b) near field communications.

Question 35

It is impossible to overemphasize the fact that, from the perspective of a computer, a network is

a) simply another I/O device.
b) just another hardware component.
c) the only device without a controller.
d) handled differently than all other I/O devices.

Answer 35

a) simply another I/O device.

Question 36

Protocols that describe a computer’s communication with the physical layer network are called

a) LAN access control protocols
b) shared access control protocols
c) medium access control protocols
d) medium admission control protocols

Answer 36

c) medium access control protocols