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CompTIA A+ > Video and Audio > Flashcards

Video and Audio Flashcards

1
Q

What is the data transfer rate for PCI?

A

133 MB/s or 266 MB/s

White color.

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2
Q

What is the data transfer rate for AGP?

A

256 MB/s - 2GB/s

Brown color.

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3
Q

What is the data transfer rate for PCIe?

A

250 MB/s - 1GB/s per lane

Black color.

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4
Q

How many pins are in the VGA connector?

A

15 pins

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5
Q

DVI connector:

A

High quality connection used with LCD displays. Partially compatible with HDMI.

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6
Q

The different types of DVI are:

A 
DVI-D: digital only
DVI-A: analog only
DVI-I: digital and analog
DVI-DL: Dual Link
M1-DA: digital, analog, and USB
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7
Q

HDMI connector:

A

Used mainly or high definition television. Can carry audio and video signals.

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8
Q

The difference types of HDMI are:

A

Type A: Supports all HD modes, compatible with DVI-D connectors

Type B: Double-video bandwidth, supports higher resolutions

Type C: Mini-HDMI, used in portable devices

Type D: Micro-HDMI, smallest connector, also uses in portable devices

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9
Q

DisplayPort connector:

A

Royalty free interface similar to HDMI.

Used packet transmission similar to Ethernet.

Connector looks similar to USB.

Not as common as DVI and HDMI.

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10
Q

S-Video connector:

A

Used for standard definition video, no audio signal. Uses a mini-DIN 4, 6, 7, or 9 pin connector.

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11
Q

Component/RGB connector:

A

Used to send analog or digital signal over three wires: red, green, and blue.

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12
Q

How many pins are on the power connectors for PCIe cards?

A

6 or 8 pins

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13
Q

Steps for troubleshooting video issues:

A
  1. Check connections.
  2. Power cycle the computer, display, and any power protection equipment.
  3. Check for an onboard video setting in the BIOS me make sure it is disabled if installing a new card.
  4. Resolution setting.
  5. Check the driver.
  6. Check the version of DirectX. Use the dxdiag tool.
  7. Check the temperature threshold of the video card.
  8. Use software to check and repair stuck or dead pixels.
  9. Calibrate the monitor
  10. Check for newly installed applications.
  11. Check inside the computer.
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13
Q

What is a flat panel display that consists of two sheets of polarizing material surrounding a layer of liquid crystal solution?

A

LCD.

They are TFT active matrix displays.

They use a cold cathode fluorescent lamp (CCFL) as the lighting source.

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14
Q

What is the best way to clean an LCD?

A

Spray isopropyl alcohol and water mixture onto a lint free cloth and then clean the screen.

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15
Q

What monitor uses light emitting diodes to display images?

A

LED.

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16
Q

What monitor uses organic light emitting diodes?

A

OLED.

The main advantage of OLED over LED is the cost.

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17
Q

What display is rarely used as a monitor but mostly in TVs that uses plasma?

A

Plasma.

They are known for brightness and low luminance black level. It is a higher energy consumer than LCDs.

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18
Q

What older type of monitor uses a cathode ray tube?

A

CRT.

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19
Q

What can be plugged into a computer’s external video port to project the computer’s video display to a projection screen?

A

Video projector.

It is measured in lumens.

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20
Q

What are programs that enable the operating system to communicate with the actual device?

A

Device drivers

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21
Q

Two rules for video driver issues are:

A

Use the manufacturer’s driver. Access the manufacturer’s website and download the latest driver.

Watch out for new operating systems. Verify that the device is compatible with the new operating system.

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22
Q

To work with video drivers:

A

Open Device Manager, expand Display Adapters category. Right clicks the device and select Properties, then select the Driver tab.

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23
Q

If a driver fails and the system does not display anything on the screen:

A

Press F8 during startup and boot into Enable Low Resolution Video or Enable VGA Mode, or boot into Safe Mode.

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24
Q

What is the term used to describe the amount of bits that represent color?

A

Color depth

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25
Q

List of Color Depths used in Windows:

A

8 bit: 256 colors
16 bit: 65,536 colors
24 bit: 16,777,216 colors
32 bit: 4,294,967,296 colors

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26
Q

How do you modify color depth in Windows 7, Vista, and XP?

A

Windows 7: Right click the desktop and select Screen Resolution. Click the monitor, and click Advanced Settings. Select Adapter tab, and click List All Modes.

Vista: Right click the desktop and select Personalize. The click Display Settings. A drop down menu for color depth is displayed.

XP: Right click the desktop and select Properties. Then click Settings tab. A drop down menu for color depth is displayed.

27
Q

What is the amount of pixels on a screen called?

A

Resolution

It is referred to as pixel dimensions.

28
Q

List of Resolutions used in Windows:

A 
VGA: 640x480
SVGA: 800x600
XGA: 1024x768
WXGA: 1280x800
SXGA+: 1400x1050
UXGA: 1600x1200
WSXGA+: 1680x1050
WUXGA: 1920x1080
HD 1080p and 1080i: 1920x1080
29
Q

What is the widescreen format that most laptop’s use by default?

A

16:9

30
Q

How do you modify screen resolution in Windows 7, Vista, and XP?

A

Windows 7: Right click the desktop and select Screen Resolution.

Windows Vista: Right click the desktop and select Personalize. Click Display Settings. Drag Resolution slider to desired resolution.

XP: Right click the desktop and select Properties. Click the Settings tab. Drag Resolution slider to the desired resolution.

31
Q

What is known as the amount of times a display is “painted” per second?

A

Refresh rate

32
Q

What is the default refresh rate for most systems?

A

60 Hz

33
Q

How do you modify the refresh rate in Windows 7, Vista, and XP?

A

Windows 7: Right click the desktop and select Screen Resolution. Click the monitor and then Advanced Settings. Select the Adapter tab and click List All Modes.

Vista: Right click the desktop and select Personalize. Click Display Settings. Click Advanced Settings and then the Monitor tab. Select the Screen refresh rate.

XP: Right click the desktop and select Properties. Click the Settings tab. Click the Advanced button and then the Monitor tab. Select the Screen Refresh rate.

34
Q

What is the process used in CRTs to decrease an unwanted magnetic field?

A

Degaussing.

35
Q

What is the Windows feature that allows you to either duplicate the display onto other monitors or extend the desktop across multiple displays?

A

Multiple Monitor (also referred as Dual View)

On a laptop it is limited to two monitors so it is called DualView.

36
Q

How do you access Multiple Monitor in Windows 7, Vista, and XP?

A

Windows 7: Right click the desktop and select Screen Resolution.

Vista: Right click the desktop and select Personalize. Then select Display Settings.

XP: Right click the desktop and select Properties. Select Settings tab.

37
Q

Which expansion bus slot is typically white in color?

A. PCIe
B. AGP
C. PCI
D. LCD

A

C. PCI

38
Q

Which of the following supports digital only connections?

A. DVI-A
B. DVI-D
C. DVI-I
D. VGA

A

B. DVI-D

39
Q

When installing a video card, what should you do before inserting the card into the slot?

A. Connect cables
B. Install drivers
C. Test
D. Prepare the slot.

A

D. Prepare the slot.

40
Q

Which of the following uses a TFT active matrix display? (Select all that apply)

A. LCD
B. CRT
C. Projector
D. Laptop

A

A and D.

41
Q

Where is the best place to get the latest driver for a video card?

A. Microsoft
B. CD-ROM
C. A friend
D. Manufacturer’s website

A

D. Manufacturer’s website

42
Q

How many colors are there if the color depth in Windows is set to 24 bit?

A. 16
B. 65,536
C. 16,777;216
D. 24

A

C. 16,777,216

43
Q

A computer is set to 1280x1024 resolution. Which standard is it using?

A. XGA
B. SXGA
C. UXGA
D. WXGA

A

B. SXGA

44
Q

What resolution does Windows use when started in Safe Mode?

A. 800x600
B. 1024x768
C. 640x480
D. 1280x800

A

C. 640x480

45
Q

What is a common refresh rate for an LCD?

A. 30 Hz
B. 60 Hz
C. 200 Hz
D. 60 MHz

A

60 Hz

46
Q

What is the maximum amount of monitors Windows allows in a Multiple Monitor environment?

A. 10
B. 2
C. 4
D. 1

A

A. 10

47
Q

A user set the resolution in Windows too high resulting in a scrambled distorted display? What should you do?

A. Upgrade the driver
B. Boot into low resolution mode.
C. Boot into the recovery console.
D. Check the video connections.

A

B. Boot into low resolution mode.

48
Q

You are troubleshooting a video issue. Which utility should you use?

A. Regedit
B. Msconfig
C. Dxdiag
D. Task Manager

A

C. Dxdiag

49
Q

You receive a computer that has a broken on-board DVI connector. What should you attempt first?

A. Replace the motherboard.
B. Replace the DVI connector.
C. Install a video card.
D. Use an adapter.

A

C. Install a video card.

50
Q

You just replaced a video card in a PC with another card from a different manufacturer. However, the driver installation does not complete. What should you do first?

A. Install the driver again.
B. Locate the latest version of the driver.
C. Roll back the driver.
D. Install the original video card.

A

C. Roll back the driver.

Then you would locate the latest driver version.

51
Q

What color is the line input audio port?

A

Light blue

52
Q

What color is the microphone input audio port?

A

Pink

53
Q

What color is the main output for stereo speakers or headphones audio port?

A

Lime green

54
Q

What color is the output for surround sound speakers audio port?

A

Black

55
Q

What color is the output for additional two speakers audio port?

A

Silver/Brown

56
Q

What color is the output for center speaker and subwoofer audio port?

A

Orange

57
Q

What is the port that delivers high quality sound over fiber optic cable?

A

S/PDIF

58
Q

What is the difference between Audio CDs, DVD-Audio, and compressed audio like MP3s and WMA files?

A

Audio CD
Sampling rate: 44 kHZ
Bit depth: 16 bit
Data rate: 1411 kbps

DVD-Audio
Sampling rate: 192 kHZ max
Bit depth: 24 bit max
Data rate: 9.6 Mbps

MP3
Data rate: 128 - 320 kbps

WMA
Data rate: 48 - 192 kbps

59
Q

What types of cables are used to connect speakers/audio devices to a sound card? (Select all that apply.)

A. 1/8 inch mini jacks
B. DVI
C. S/PDIF
D. RCA

A

A and C.

60
Q

Which of the following are commonly used expansion buses for sound cards? (Select all that apply.)

A. AGP
B. PCI
C. PCIe
D. AMR

A

B and C.

61
Q

What standard is followed by most sound card manufacturers for the colors of the 1/8 mini jacks?

A. PCI
B. PC 99
C. PC 100
D. PCIe

A

B. PC99

62
Q

What is the total data rate of an audio CD?

A. 320 kbps
B. 160 kbps
C. 1411 kbps
D. 9.6 Mbps

A

C. 1411 kbps

63
Q

A customer has a PC with a sound card that is emitting a red light out of one port. What is happening?

A. The sound card is about to fail.
B. The sound card is defective.
C. The optical cable is not connected to the sound card.
D. That is the normal sound card LED.

A

C. The optical cable is not connected to the sound card.

64
Q

A user complains that speakers are connected to the PC but are not playing audio. What should you do first?

A. Move the speaker cable to another jack on the sound card.
B. Move the speaker cable to the headphone jack on the optical drive.
C. Reinstall the sound drivers.
D. Install a new sound card.

A

A. Move the speaker cable to another jack on the sound card.

CompTIA A+ (18 decks)

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