CompTIA A+ Cert Master Mobile Devices 1.2 Study

A few users report that their tablets no longer seem to respond to touch. What component of the display may be malfunctioning?

Digitizer A touch screen can also be referred to as a digitizer because of the way it converts analog touch input to digital instructions. The digitizer is sandwiched between a layer of protective glass and the display panel.

An IT department needs to order a few tablets to allow for their in-house design team to draw on them. What component of displays should the tablets include?

Digitizer A touch screen can also be referred to as a digitizer because of the way it converts analog touch input to digital instructions. The digitizer is sandwiched between a layer of protective glass and the display panel.

A grocery store is looking to replace the old deli paper-based ticketing system for its queue. They are looking to set up a tablet that customers can use to select a number for the deli. What component would be necessary to allow customers to touch and tap the screen?

Digitizer A touch screen can also be referred to as a digitizer because of the way it converts analog touch input to digital software instructions.

A network engineer at a company is installing wireless access points in the office. There will be only one Wi-Fi option available, as the building is far enough away from others. What should the engineer do to ensure there are no dead zones in the office? CORRECT ANSWER:

Equipment placement

Users in a small portion of the office are reporting that Wi-Fi connectivity seems very spotty. There is only one Wi-Fi option available. What issue are they running into?

Equipment placement

A user is trying to buy a monitor and is told that the crystals in the screen rotate rather than twist or tilt. What kind of technology does the monitor use?

IPS In-plane switching (IPS) uses crystals that rotate rather than twist.

A video gamer is looking to buy a monitor that has great response time and video quality. What monitor technology would best fit this need?

IPS In-plane switching (IPS) uses crystals that rotate rather than twist.

An electrician needs to convert DC power to AC power. What should the electrician use to complete this task?

Inverter An inverter is a component used to convert DC power to AC power

A user received a brand-new laptop, but a recent update prevents audio from being recorded during Teams calls. What should a support technician look at?

Microphone

A user with a desktop cannot speak during a meeting because there is no recording equipment built into the computer. What should the user purchase to make audio-only calls?

Microphone

An IT department is looking to purchase TVs for their conference room. The main requirements are that they have good contrast ratios, are thinner and lighter, and consume less power. What kind of TV should they buy for the conference rooms?

OLED In an organic LED (OLED) display, a separate LED generates each pixel. OLED allows much better contrast ratios and allows the display to be thinner, lighter, and consume less power

An IT department purchased a few thin and light TVs for their conference rooms, but set up a static screen while not in use. After a while, users report the screen seems to have burnt in, distorting their presentations. What kind of TVs did they purchase?

OLED In an organic LED (OLED) display, a separate LED generates each pixel. OLED allows much better contrast ratios and allows the display to be thinner, lighter, and consume less power

A company is looking to buy budget monitors. A sales representative mentioned that a specific model would work best for them because it uses a technology that is less common but was one of the original types of LCD technologies. What kind of monitor technology is the salesperson referring to?

TN Twisted nematic (TN) crystals twist or untwist in response to the voltage level. TN is the earliest type of TFT technology, and users may still find it in budget displays.

A customer brought back a TV with the complaint that while the color contrast was great, the viewing angle was terrible and would not work with their living room set up. What kind of LCD technology does this TV have?

VA Vertical alignment (VA) uses crystals that tilt rather than twist or rotate. This technology supports a wide color gamut and the best contrast-ratio performance.

A user reports a blacked-out camera when using Microsoft Teams, even though it is working. What should the support technician look at?

Webcam

A user reports that when using Microsoft Teams, others cannot see their face, even though it should be enabled. What should the support technician look at?

Webcam