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

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? (Select two.) The cold cathode fluorescent lamp (CCFL) has burned out and needs to be replaced. The extended download placed high demands on the system DC power, causing the BIOS to shut off the backlight. The wireless network card is emitting radio signals that interfere with the backlight, causing it to stop functioning. Malware was installed as part of the download that targeted the backlight circuitry. The inverter in the LCD assembly has malfunctioned.

1 and 5

Which feature makes it possible to close some notebook computers and still use the touchscreen?

180-degree rotating touchscreen

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 technician is tasked with replacing a Wi-Fi antenna in a laptop computer. Which of the following places is the antenna MOST likely to be located in?

Around the laptop's bezel

Which of the following are advantages of using an OEM replacement LCD display? A - The OEM LCD part is better quality than a non-OEM part. B - The LCD display is the same quality as the screen you are replacing. C - The LCD display is guaranteed to work as a replacement. D - OEM parts are designed to be used as generic replacement parts. E - The price of the LCD display replacement is equal to non-OEM parts.

B and C

Which of the following devices authenticates users based on their physical features?

Biometric scanner

You want to be able to use a high-quality, noise-cancelling headset with your mobile phone to make conference calls and to listen to music. However, your new mobile phone does not have an earphone jack. Which of the following technologies allows you to wirelessly connect your headset to your new phone?

Bluetooth

Which of the following medical devices utilize Bluetooth or Wi-Fi technology to communicate with a mobile phone? (Select two.) CGM USB-C MicroSD Trackpad Fingertip EKG

CGM and fingertip EKG

Which of the following components allows a tablet to provide a screen interface that recognizes multiple finger touches at the same time?

Capacitive touchscreen

You need to replace the video card in a laptop. Which of the following is the first step?

Find a service manual with correct disassembly procedures.

Mobile devices can connect to the internet and other devices using a variety of connection types. Drag each connection type on the left to the appropriate description on the right. Used to obtain wireless internet access using a WLAN. Used to emulate cryptographic smart card functionalities. Provides mobile devices with access to network resources and software applications on a home network. Allows you to share a phone's internet connection with a laptop. A wireless technology standard for exchanging data over short distances.

Hotspot NFC Mobile VPN Tethering Bluetooth

Which of the following display technologies require backlighting?

LED and LCD

Which of the following battery types is the MOST expensive?

Lithium Ion (Li-Ion)

Which of the following help to improve the security of sensitive information on your mobile device if it is lost or stolen? Remote backup Locator applications A firewall A screen lock Remote wipe Up-to-date OS updates and patches Anti-malware software

Locator applications, a screen lock, and remote wipe

Drag each computer function on the left with its associated hardware component on the right. Hard Disk Keyboard Speakers DVD-RW Printer CPU RAM Microphone

Long-term storage Input Output Long-term storage Output Processing Processing Input

Which type of interface is typically used for internal wireless networking cards in laptops?

Mini-PCI

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

Shorter lifespan

Which peripheral device is best for capturing a customer's signature when they check out at a convenience store or supermarket?

Signature pad

You need to replace a broken monitor on a desktop system. You decide to replace it with a spare monitor that wasn't being used. Even though the monitor is made by a different manufacturer than the desktop computer, it still works with the computer. Which computer design concept makes this possible?

Standardization

A user opens a help desk ticket to replace a laptop keyboard. The user reports that the cursor randomly moves when typing, causing them to make frequent typing corrections. The problem does not occur when the laptop is attached to a docking station and an external keyboard is used. You want to find a more affordable solution than replacing the keyboard. Which of the following actions BEST mitigates this problem?

Use the special function key to disable the touchpad when the laptop keyboard is used.

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)

Match each LCD type with the corresponding benefit or characteristic. The least expensive, thinnest, and most widely used type of LCD. Superior accuracy (most expensive type of backlighting technology). Able to dim specific regions of the screen. Produces better colors than WLED (consumes more energy).

WLED RGB-LED Full-array WLED CCFL

The human resources department wants to give gifts away at the company's summer party. They would like to have an assortment of fitness tracker wristbands, smartwatches, smart glasses, and virtual reality headsets. They have been trying to locate these on the internet, but have been unsuccessful. Which of the following types of mobile devices should you tell them to search for?

Wearable devices

Which of the following laptop features is specifically designed to facilitate online meetings, take still pictures, and record videos?

Webcam

A user wants to use a laptop to display a presentation on a large TV monitor that has an HDMI connection. Which of the following laptop ports or connections can they use to add this display device? (Select two.) DisplayPort using a DisplayPort-to-HDMI cable. USB port using a USB-to-RJ45 dongle. USB port using a USB-to-HDMI adapter. Expresscard connection using a Expresscard Ethernet adapter. USB port using a USB-to-wireless dongle.

1 and 3

Which of the following statements about cleaning LCD monitors and display devices is true? A - You should power off your monitor and clean it with a lint-free dry cloth. B - An LCD monitor is best cleaned using a lint rag and glass cleaner. C - Most new monitors are self-cleaning and should not be cleaned using external methods. D - Monitors are best cleaned while powered on in order to observe the effectiveness of your cleaning.

A

A sales person typically carries a laptop computer to several off-site customer meetings each day, but needs the flexibility to quickly attach other peripherals and charge the laptop battery while at their office desk. Which of the following laptop feature BEST meets these requirements?

A laptop docking station

Ida, one of the employees in the sales department, needs a way to display her PowerPoint sales presentation to a large group of potential customers. She has asked you to set up the conference room in preparation for her presentation. You will need to purchase a display system for the conference room. Which of the following display systems would be the BEST to purchase?

A large screen and a projector

You are a technician tasked with replacing the processor in a client's laptop. The laptop has been experiencing overheating issues and the client suspects the processor might be the cause. After opening the laptop, you notice that the processor is soldered onto the motherboard. What which of the following would be the BEST next step?

Advise the client to purchase a new laptop.

Which of the following devices would you add to a computer if you needed to take inventory at a retail store by scanning the UPC symbols on products?

Bar code reader

A user has configured their mobile device to unlock with facial recognition. Which of the following methods for securing the mobile device is being used?

Biometric authentication

You have just purchased a smart watch to track your fitness statistics and health. To change the interface or update the firmware, you need to use an app on your smartphone. Which of the following connection technologies will you MOST likely use to communicate between your watch and the app?

Bluetooth

You have just set up a food truck business, and you need to find a device that allows you to accept credit card and debit card payments through your smartphone. Which of the following devices do you need?

Credit card reader

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 of the following input devices uses a stylus? Digitizer Trackpoint Touchscreen Touchpad

Digitizer

You have a mobile device that provides a touchscreen, but does not have touchscreen technology embedded into the display. Which of the following mobile device display components provides the touchscreen functionality?

Digitizer

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 have recently been hired by a course development company to develop online simulations, and you have been given permission to work at home. The company has given you a laptop computer, two external displays, and a wireless mouse and keyboard. However, you also want to connect several of your own personal devices to the laptop, including a printer, headset, webcam, a third external display, and a drawing pad. You also want to be able to boot your laptop with all these devices without opening up the laptop. Which of the following items should you request from your company to help connect all these devices in the EASIEST and most EFFECTIVE way possible?

Docking station

Match each type of mobile device on the left with the description on the right. (You can use a mobile device type more than once.) This type of mobile device provides a high-contrast display, making it ideal for reading electronic newspapers in direct sunlight. This type of mobile device includes virtual reality headsets. This type of mobile device most likely uses a 4G, 5G, or LTE connection. This type of mobile device often includes a stylus for precise drawing and control. This type of mobile devices uses E Ink technology.

E-reader Wearable device Smartphone Tablet E-reader

Which function is commonly associated with the following icon?

GPS

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

Gyroscope and accelerometer

While traveling in a car, a user who has an unlimited data plan on a smartphone opens a wireless connection to share the internet with other passengers. Which of the following connection types is the user MOST likely using?

Hotspot

Which of the following MOST accurately describes a touch pen? Does not contain electronics. Works well for high-quality digital drawings. Includes a soft rubber tip at the end. Includes features such as tilt and pressure sensitivity.

Includes features such as tilt and pressure sensitivity.

Which of the following mobile device display components provides the required power for a mobile device's screen?

Inverter

Which of the following are considered input devices? (Select three.) Keyboard Printer RAM Monitor Microphone Scanner

Keyboard, microphone, and scanner

You are putting together a system for a graphic artist and need to make sure that you find a display that meets their needs. The display needs to have very good color reproduction quality and viewing angles. The display also needs to have proper cooling and be power-efficient. Which of the following display types will MOST likely meet these needs?

LCD display with IPS panel

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.

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? Place the laptop next to a heater set to High. Visually inspect the LCD screen for cracks before turning the laptop on. Let the laptop warm up to room temperature before turning it on. Blow compressed air into the cooling ports before turning the laptop on. Turn on the laptop and run self-diagnostic tests.

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

You have subscribed to a cloud-based service to synchronize data between your mobile device and your PC. Before allowing the data to be synchronized, this service uses a process where the cloud service and the client on the mobile device verify each other's security certificates. What is this process called?

Mutual authentication

You have recently issued new mobile phones to the sales team in your company. Each phone has the ability to store and transmit encrypted information for such things as making payments at a checkout counter. Which of the following technologies is being used in these phones?

NFC chips

Which of the following battery types has the greatest need to be completely drained before being recharged?

Nickel Cadmium (NiCad)

A company is purchasing new laptops for their graphic artist division. Which of the following display technologies provides better contrast and deeper blacks, resulting in better picture quality?

OLED

Lloyd works for a graphic design company. His monitor recently failed, and you have been asked to purchase a new one for him. Lloyd would like a monitor with a fast pixel refresh rate, low energy consumption, and accurate color representation. Which of the following types of display devices will BEST meet the requested requirements?

OLED

Which of the following is an extra button or knob on a laptop keyboard that moves the mouse cursor?

Pointing stick

A user wants to utilize her laptop to give a presentation on a video projector. She has called, asking you how to switch the display to the external monitor port on her laptop. Which of the following should you tell her? Increase the screen brightness until the display appears on the video projector. The laptop should have automatically detected the external display and redirected video output to it. This cannot be done. A special adapter must be installed in a USB slot on the laptop. Press and hold the fn key. Then press the monitor function key (with an image of a monitor on it).

Press and hold the fn key. Then press the monitor function key (with an image of a monitor on it).

Which of the following are considered computer hardware? (Select two.) Printer Correct Answer: Motherboard Drivers Operating system Microsoft Office

Printer and motherboard

You recently replaced a malfunctioning video card on your laptop. After you reassemble the laptop, everything works well except for the wireless network connection. The wireless adapter functioned correctly before you replaced the video card. Which action can MOST likely resolve this problem?

Reconnect the antenna connections.

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 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

While servicing your laptop, you notice that your Lithium Ion battery is swelling. What is the BEST action you can take to resolve the situation?

Replace the battery.

You are a computer technician. A user reports that an older laptop is having trouble connecting with newer wireless networks. Which of the following actions should you consider as an alternative to replacing the laptop?

Replace the internal wireless card.

Which of the following connects the internal laptop keyboard to the laptop's system board?

Ribbon cable

A technician is tasked with adding a valid certificate to a mobile device so that encrypted emails can be opened. Which of the following email protocols is best for the technician to use? S/MIME IMEI POP3 IMAP

S/MIME

Which of the following protocols can encrypt emails on a mobile device?

SSL

A company is considering providing smartphones to their employees and is investigating the interaction of the phones with iCloud, Google Drive, Dropbox, and OneDrive. Which of the following data synchronization methods is the company considering?

Synchronization to the cloud

A technician is tasked with replacing an internal laptop hard drive. Which of the following hard drive standards is of MOST concern when selecting a replacement that is compatible with the laptop?

The hard drive's storage capacity

When a presenter at a conference connects a laptop to a projector, the projector mirrors the laptop's display. The presenter wants to extend the laptop's desktop instead. Which of the following options is the QUICKEST way to make the change?

Toggle the dual display function key on the laptop.

You've just purchased an Ethernet adapter for your Android tablet. Which of the following USB connector types would you MOST likely use to plug in to the adapter?

USB-C connector

You are walking through a shopping mall. Your smartphone frequently displays a message that additional information is needed to log in. Which of the following is the MOST likely cause of this message?

Unintended Wi-Fi connections

After replacing a laptop touchpad, a technician finds that the touchpad does not move the cursor. However, the attached USB mouse does. Which of the following actions should the technician perform before opening the laptop case to re-check the connection?

Unplug the USB mouse and re-check touchpad movements.

You are removing the bezel from a laptop's LCD display screen. After several attempts to pry up the bezel and remove it, you have not separated the bezel from the case. Which of the following is the MOST likely reason for your inability to remove the bezel?

You missed a screw