CompTIA A+ Core 1 1.2

Question 1

What does LCD stand for?

Answer 1

Liquid Crystal Display

Question 2

What are the advantages of an LCD display?

Answer 2

• Lightweight
• Low power usage
• Relatively inexpensive

Question 3

What is a major disadvantage of LCD displays?

Answer 3

Difficulty in achieving true black

Question 4

What types of backlights can be used in LCD displays?

Answer 4

• Fluorescent
• LED
• Other types of light

Question 5

What is TN LCD?

Answer 5

Twisted Nematic LCD, known for good response times but poor viewing angles

Question 6

What does IPS stand for, and what are its benefits?

Answer 6

In-Plane Switching, providing very good color representation

Question 7

What is a VA display?

Answer 7

Vertical Alignment LCD, offering decent color representation with slower response times than TN

Question 8

What does OLED stand for?

Answer 8

Organic Light Emitting Diode

Question 9

How does an OLED display work?

Answer 9

The organic material emits light when provided with a current

Question 10

What is the advantage of OLED displays?

Answer 10

• Very thin
• Great color representation
• Lightweight

Question 11

What role does the laptop display play in wireless networking?

Answer 11

Houses wireless antennas for 802.11 and Bluetooth

Question 12

What components need to be connected when replacing a laptop display?

Answer 12

• Video components
• Antenna wires

Question 13

What is typically integrated into the laptop display for video calls?

Answer 13

Webcam and microphone

Question 14

What type of backlight might older laptops use?

Answer 14

CCFL (Cold Cathode Fluorescent Lamp)

Question 15

What is the difference in power requirements between CCFL and LED backlights?

Answer 15

CCFL requires more power than LED lights

Question 16

What does the term ‘LED display’ often refer to?

Answer 16

LED backlit LCD

Question 17

What is the purpose of inverters in older laptops with CCFL backlights?

Answer 17

Convert DC power to AC power for the CCFL backlight

Question 18

How can you identify if a backlight has failed?

Answer 18

Shine a flashlight at the screen; if information is visible, the backlight may be the issue

Question 19

What is a digitizer in a display?

Answer 19

Converts analog input into digital signals

Question 20

What types of input can a touchscreen digitizer handle?

Answer 20

• Stylus input
• Finger input

Question 21

Fill in the blank: A laptop display often includes a ______ for video capture.

Answer 21

webcam

Question 22

True or False: IPS displays are typically less expensive than TN displays.

Answer 22

False

Question 23

What happens if the backlight fails in an older laptop?

Answer 23

You may need to replace the inverters or the entire display