B.2.1 CompTIA A+ 220-1101 (Core 1) Domain 1: Mobile Devices

When a user rotates a mobile device, the operating system changes the screen orientation so that the display remains upright for the user. Along with a Gyroscope, which of the following technologies detects this movement on a mobile device?

Accelerometer

You have removed the bezel from a notebook display that has stopped functioning. You see a DC-to-AC power inverter at the base of the screen. Which of the following BEST describes the type of display that you are working with?

An LCD display that uses CCFL backlighting.

You need to replace the hard disk in your laptop computer. Which of the following hard drive sizes should you choose for the laptop?

2.5"

A manufacturing company has customized a computer application that supervisors use to track line worker efficiency. Supervisors will interact with the application while walking within and between work areas and will also use the laptop while sitting at their desks. Which of the following laptop features will BEST minimize the awkward movement of carrying a bulky laptop with a hinged display while providing the flexibility to use the device at a desk?

A rotating or removable screen

In order to edit print server properties in Windows 11, which section do you need to select from the Settings menu?

Bluetooth & devices

You are in charge of putting together the display design for a new conference center at your organization. The conference center will be in a large auditorium with 500 or more seats. Which of the following technologies will provide a large display for such a group and also provide very high resolutions?

DLP projector

Which component is designed to let you use a notebook system as a desktop system by making it possible to connect a normal-sized external mouse, keyboard, monitor, and speakers?

Docking station

You are a trainer for your company and often teach courses in a classroom located on campus or in a hotel conference room. In your office, which is separate from the classroom, you have two external monitors connected to your laptop, and you are able to display different content on each monitor. However, when teaching, you only have your laptop and a projection unit. To make teaching easier, you want the same content to show on both the laptop monitor and the projection screen. Which of the following multiple display options would be BEST to select when you are teaching?

Duplicate these displays

You are putting together a gaming system and need to make sure that you find a display that meets your needs. The display needs to have a very good response time, and you would prefer that it be affordable and power-efficient. Which of the following display types will MOST likely meet these needs?

LCD display with TN panel.

Which of the following is true of modern LCD monitors in regards to backlighting?

LEDs are used to backlight the screen.

A new laptop was delivered to your home and left on the porch while you were at work. It is very cold outside, and you don't know how long it has been there. You unpack the laptop. You would like to know if it is working properly. Which of the following is the BEST action to take?

Let the laptop warm up to room temperature before turning it on.

Which of the following is a disadvantage of using a Lithium Ion (Li-Ion) battery over a Nickel Metal Hydride (NiMH) battery?

Li-Ion batteries have a shorter lifespan than NiMH batteries.

You have recently purchased a new, foldable smart phone. Which of the following types of mobile device display technologies is MOST likely being used for the foldable display?

OLED

While using the touchpad on a laptop computer, you notice that the mouse is not responding very well, making it difficult to move the mouse around the screen. Which of the following actions would MOST likely fix this problem?

Recalibrate the touchpad.

You are a technician for a company. Additional funds have been allocated to the sales department, and they have asked you to upgrade the memory modules in each employee's notebook computer. Which of the following are the MOST common methods to access these memory slots?

Remove the keyboard OR open a panel on the bottom of the notebook.

Your older notebook LCD display often goes dim or sometimes blank. Which of the following would be the BEST first step to resolve this issue?

Replace the CCFL inverter.

You are troubleshooting a malfunctioning notebook computer system. The user has indicated that the LCD screen suddenly became dark and difficult to read while they were downloading a large file through the wireless network while the system was plugged in at their desk. You have checked the system and determined that the backlight has stopped working. Which of the following are the MOST likely causes?

The cold cathode fluorescent lamp (CCFL) has burned out and needs to be replaced OR the inverter in the LCD assembly has malfunctioned.

You have recently been given an older laptop to use for performing basic tasks such as sending emails and editing documents. However, when the display changes from one color to another, you notice that there is some distortion in the image. Which of the following LCD technology types is MOST likely being used for the LCD display?

Vertical alignment (VA)