Computer User Support - Chapter 12: Mobile Devices
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? A. Biometric authentication B. Trusted source C. Locator application D. Antivirus application
A. Biometric authentication
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? A. Mutual authentication B. Hotspot connection C. Tethering D. Virtual private network
A. Mutual authentication
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? (Select two.) A. GPS B. Accelerometer C. Geotracking D. Wi-Fi E. Gyroscope
B. Accelerometer E. Gyroscope
Joe, a frequent visitor to a branch office, attempts to connect his tablet to the office wireless network, but is unable to connect to the internet, even though he has verified that the SSID and password are correct. Joe attempts to connect to a coworker's hotspot, but is still unable to connect to the internet. Which of the following is the MOST likely cause of this issue? A. MAC filtering has been enabled on the branch office wireless access point. B. Airplane Mode has been set on his tablet. C. Joe's tablet has been configured with full device encryption. D. The connection between the branch office router and internet service provider is down.
B. Airplane Mode has been set on his tablet.
You have a notebook computer with a built-in wireless network card. One day, the network card stops working. Because the network card is integrated onto the motherboard, you do not want to replace the entire motherboard. What can you use to connect to the wireless network? (Select two.) A. Enable the Bluetooth adapter on the notebook. B. Insert an ExpressCard wireless network card. C. Install a PCI wireless network card. D. Insert a wireless USB network card. E. Enable the infrared port on the notebook.
B. Insert an ExpressCard wireless network card. D. Insert a wireless USB network card.
Which of the following is a disadvantage of using a Lithium Ion (Li-Ion) battery over a Nickel Metal Hydride (NiMH) battery? A. Li-Ion batteries take up more physical space than NiMH batteries. B. Li-Ion batteries have a shorter lifespan than NiMH batteries. C. Li-Ion batteries develop a memory, while NiMH batteries do not. D. Li-Ion batteries are more heat-sensitive than NiMH batteries.
B. Li-Ion batteries have a shorter lifespan than NiMH batteries.
Which of the following mobile device display components provides the required power for a mobile device's screen? A. Digitizer B. TN C. Inverter D. IPS
C. Inverter
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? A. VPN B. Infrared transmitters C. NFC chips D. Bluetooth transmitters
C. NFC chips
Which of the following protocols can encrypt emails on a mobile device? A. IMAP B. POP3 C. SSL D. SMTP
C. SSL
You are troubleshooting a malfunctioning laptop computer system. The customer has indicated that the screen is always dark and difficult to read, even while the system is plugged into a wall outlet. You checked the system and determine that the backlight isn't working. Which of the following is the MOST likely cause of this issue? A. The wrong AC adapter is being used with the system. B. The laptop video adapter is malfunctioning. C. The LCD cutoff switch is stuck in the Off position. D. The laptop battery is failing and needs to be replaced.
C. The LCD cutoff switch is stuck in the Off position.
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? A. USB-B connector B. USB-A connector C. USB-C connector D. Serial connector
C. USB-C connector
Which of the following are devices categorized as part of the Internet of Things (IoT)? (Select two.) A. Laptops B. Tablets C. Routers D. Medical sensors E. Smartwatches
D. Medical sensors E. Smartwatches
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? A. IPS B. TN C. VA D. OLED
D. OLED
Which of the following medical devices utilize Bluetooth or Wi-Fi technology to communicate with a mobile phone? (Select two.) A. Trackpad B. Fingertip EKG C. CGM D. USB-C E. MicroSD
B. Fingertip EKG C. CGM
Listen to exam instructions Which ACPI power state allows a system to start where it left off, but turns all other components off? A. Off B. Hibernate C. Working D. Standby
B. Hibernate
Which of the following are advantages of using an OEM replacement LCD display? (Select two.) A. The price of the LCD display replacement is equal to non-OEM parts. 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. The OEM LCD part is better quality than a non-OEM part. E. OEM parts are designed to be used as generic replacement parts.
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.
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.) A. Malware was installed as part of the download that targeted the backlight circuitry. B. The inverter in the LCD assembly has malfunctioned. C. The cold cathode fluorescent lamp (CCFL) has burned out and needs to be replaced. D. The extended download placed high demands on the system DC power, causing the BIOS to shut off the backlight. E. The wireless network card is emitting radio signals that interfere with the backlight, causing it to stop functioning.
B. The inverter in the LCD assembly has malfunctioned. C. The cold cathode fluorescent lamp (CCFL) has burned out and needs to be replaced.
Match each notebook fn key icon label on the left to the corresponding key on the right. Drag: A. Touchpad (on/off) B. Screen orientation C. Wireless (on/off) D. Bluetooth (on/off) E. Dual displays F. Play/pause media Drop: 1. Computer crossed out 2. Circular arrow 3. Cell tower 4. Bluetooth sign 5. Square in between two lines 6. Play/Pause Button
A-1 B-2 C-3 D-4 E-5 F-6
Match each battery type on the left with the battery characteristics on the right. (You can use each battery type more than once.) Drag: A. Nickel Cadmium (NiCad) B. Nickel Metal hydride (NiMH) C. Lithium Ion (Li-on) Drop: 1. Takes up the most physical space. 2. Takes up the least physical space. 3. The most expensive of Nickel batteries. 4. Cannot be overcharged. 5. Suffers from swelling and catching fire.
A-1 C-2 B-3 C-4 C-5
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. Drag: A. Hotspot B. Tethering C. Bluetooth D. NFC E. Mobile VPN Drop: 1. 2. 3. 4. 5.
A-1 D-2 E-3 B-4 C-5
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? A. USB cable B. Wi-Fi C. E Ink D. Bluetooth
D. Bluetooth
Which of the following components allows a tablet to provide a screen interface that recognizes multiple finger touches at the same time? A. OLED display B. Bluetooth C. E Ink D. Capacitive touchscreen
D. Capacitive touchscreen
You have recently purchased a gaming laptop and want to make sure that it is properly ventilated to avoid overheating. Which of the following is the BEST way to avoid overheating the laptop (especially when gaming for hours)? A. Purchase a special laptop cooling base. B. Configure Power Options to reduce power consumption. C. Set the laptop on a hard, solid surface. D. Keep all vents clear and unobstructed.
A. Purchase a special laptop cooling base.
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? A. Recalibrate the touchpad. B. Use a stylus on the touchpad. C. Replace the touchpad. D. Clean your fingers and try again.
A. Recalibrate the touchpad.
As a technician in a computer repair shop, you have determined that the processor in a laptop needs to be replaced with one with a faster processing speed. However, when you remove the keyboard to expose the processor, you notice that the processor is soldered onto the motherboard. Which of the following is the BEST solution for replacing the processor? A. Replace the motherboard with a faster processor. B. Upgrade the memory in the laptop. C. Replace the entire laptop with one that has the processor needed. D. Unsolder the processor and solder a new one into the motherboard.
A. Replace the motherboard with a faster processor.
A technician suspects that an app on a tablet device may be surreptitiously using the camera without permission. Which of the following would be the BEST way to troubleshoot this issue? A. Run an anti-malware scan. B. Check the results of a cell tower analyzer. C. Perform a soft reset on the device. D. Remove all Bluetooth pairings.
A. Run an anti-malware scan.
A company is considering providing smartphones to their employees and is investigating the interaction of the phones with iTunes, Google Drive, Dropbox, and OneDrive. Which of the following data synchronization methods is the company considering? A. Synchronization to the cloud B. Mutual authentication for multiple services C. Synchronization connection types D. Synchronization to the desktop
A. Synchronization to the cloud
Mobile device applications fall into two categories. Some are reviewed, approved, and signed with a certificate by the app service, while others are not. Which category do apps fall into if they have been reviewed, approved, and signed with a certificate? A. _______ What category do apps fall into if they have not been reviewed, approved, and signed with a certificate? B. _____
A. Trusted B. Untrusted
You just purchased an iPad tablet device. You want to synchronize your photos, music, email, and contacts from your Windows 11 PC to the device. Which of the following can you use to connect the device to your PC? (Select two.) A. Wi-Fi wireless connection B. Serial cable C. FireWire cable D. USB cable E. Ethernet wired connection
A. Wi-Fi wireless connection D. USB cable
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? A. Twisted nematic (TN) B. Vertical alignment (VA) C. Organic light-emitting diode (OLED) D. In-plane switching (IPS)
B. Vertical alignment (VA)
From your Windows laptop, you have been working on a large project that has required you to open a lot of items (programs, files, etc.). It is time to leave the office and make the two-hour journey home. You will be working on this project a bit more when you arrive at home. Your computer's battery is failing and only has a very short life span (about one hour) before your computer loses power. When you arrive home and open the laptop lid, nothing happens. After plugging in your computer and powering it on, you find that all of your programs and files have been closed. To troubleshoot, you open Control Panel and navigate to the settings that control what your computer will do when the laptop lid is closed. Which of the following power settings MUST you choose to prevent the same problem in the future? A. When I close the lid: Sleep/Suspend B. When I close the lid: Hibernate C. When I close the lid: Shut down D. When I close the lid: Standby
B. When I close the lid: Hibernate
Which of the following mobile connection types can enable other mobile devices to connect to the internet? A. Bluetooth B. NFC C. Hotspot D. USB
C. Hotspot
Which of the following help to improve the security of sensitive information on your mobile device if it is lost or stolen? (Select three.) A. A firewall B. Up-to-date OS updates and patches C. Remote wipe D. Anti-malware software E. Locator applications F. Remote backup G. A screen lock
C. Remote wipe E. Locator applications G. A screen lock
You have ordered and are about to replace an LCD screen on a laptop device. You have already placed the laptop on a static mat, attached a static wristband, and unplugged the laptop. What is your next step in replacing the LCD screen? A. Remove the bezel. B. Remove the screen. C. Remove the battery. D. Remove the video ribbon.
C. Remove the battery.
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? A. Tighten down the bezel screws. B. Replace the LCD screen display. C. Replace the CCFL inverter. D. Reconnect the video ribbon.
C. 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? A. Check the battery again in a few days. B. Remove the battery and cool it down. C. Replace the battery. D. Check the battery's voltage.
C. Replace the battery.
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? A. Increase the screen resolution so that mouse movements are more granular. B. Decrease the operating system's mouse speed setting. C. Use the special function key to disable the touchpad when the laptop keyboard is used. D. Lower the screen resolution so that mouse movements are less granular.
C. Use the special function key to disable the touchpad when the laptop keyboard is used.
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? A. E-readers B. Smartphones C. Wearable devices D. Tablets
C. Wearable devices
You currently use the Exchange email client on your desktop PC. You use the Exchange email client to connect to an email server, which utilizes the IMAP and SMTP protocols. You recently purchased an iPad, and you want to configure its Mail app to connect to your email server. Which of the following BEST describes whether you can accomplish this task? A. You can only connect the Mail app to email services such as Gmail or Yahoo! Mail. B. You cannot use the IMAP protocol for the Mail app. You must use POP3 instead. C. You can configure the Mail app on an iPad to connect to an email server using the IMAP and SMTP protocols. D. You must use SSL to secure the Mail app.
C. You can configure the Mail app on an iPad to connect to an email server using the IMAP and SMTP protocols.
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. Special function keys B. A touchscreen display C. A laptop docking station D. A rotating or removable screen
D. A rotating or removable screen
One of your users suspects that the battery in their laptop computer is failing. You test it by using a known good power adapter long enough to receive a full charge. The battery reads that it is fully charged in Windows. You then disconnect the laptop from its power source and wait to see how long the battery lasts. The battery dies after only about 15 minutes. Which of the following actions will MOST likely fix this problem? A. Configure the Power Scheme settings to minimize battery usage. B. Put the battery in another laptop to verify that it is, in fact, the battery that is failing. C. Calibrate the battery to synchronize the power meter to the actual charge capacity of the battery. D. Assume that the battery is failing and replace it.
D. Assume that the battery is failing and replace it.
Joe has been issued a company-owned tablet. He finds that the performance decreases after a few hours of use. After he power-cycles the tablet, performance returns, but the tablet begins to slow again after an hour of use. Which of the following is the BEST action to troubleshoot the problem? A. Replace the tablet battery. B. Reset the tablet to factory defaults. C. Disable wireless networking. D. Check the number of apps that are running.
D. Check the number of apps that are running.
Which of the following is the surest way to prevent the loss of important information on your mobile device if it is lost, stolen, destroyed, or there is a natural disaster? A. Only use apps, such as email apps, that store data on the app provider's servers. B. Don't put important information on your mobile device. C. Configure your device to back up important data to your personal computer. D. Configure your device to remotely back up important data to the cloud.
D. Configure your device to remotely back up important data to the cloud.
You need to replace the video card in a laptop. Which of the following is the first step? A. Remove the bezel. B. Remove the access panel at the bottom of the laptop. C. Remove the keyboard. D. Find a service manual with correct disassembly procedures. E. Remove the display wires if the video card is integrated into the motherboard.
D. Find a service manual with correct disassembly procedures.
You have just purchased a used laptop, and you want to configure it to hibernate when you press the power button. You edit the Power Options settings and enable hibernation. Then you configure the power button to trigger hibernation. Everything works fine for several weeks. One day, when you press the power button, the laptop does not hibernate. Which of the following will BEST resolve this issue? A. Enable ACPI support in the BIOS. B. Configure the laptop to use the Max Battery power scheme. C. Charge the battery before pressing the power button. D. Free up disk space.
D. Free up disk space.
Which of the following BEST describes the purpose of the USB Selective Suspend feature? A. The USB Selective Suspend feature monitors and logs how long USB devices are powered on. B. If a USB device is not in use, the USB Selective Suspend feature lets you selectively suspend power to a port. C. The USB Selective Suspend feature suspends power to any attached USB devices when the system hibernates. D. If a USB device is not in use, the USB Selective Suspend feature stops providing power to the port.
D. If a USB device is not in use, the USB Selective Suspend feature stops providing power to the port.
Which of the following MOST accurately describes a touch pen? A. Does not contain electronics. B. Includes a soft rubber tip at the end. C. Works well for high-quality digital drawings. D. Includes features such as tilt and pressure sensitivity.
D. Includes features such as tilt and pressure sensitivity.
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? A. Replace the wireless network card. B. Use a wireless network adapter that plugs into a USB port. C. Reconnect the laptop battery. D. Reconnect the antenna connections.
D. Reconnect the antenna connections.
Your laptop's LCD screen is beginning to flicker and dim. You have checked the brightness setting to make sure that it is configured correctly. Which of the following is the MOST likely cause of your screen issue? A. The LCD screen is failing. B. The system is configured to use an external display port. C. The video ribbon cable to the screen is disconnected. D. The LCD screen inverter is failing.
D. The LCD screen inverter is failing.
Maria, a smartphone user, has recently installed a new app. She now experiences a weak signal and sometimes a complete signal loss at locations where she used to have a good cellular signal. Her phone battery is fully charged. Which of the following actions would BEST address this issue? A. Use a cell tower analyzer to determine normal signal strength. B. Force stop the new app. C. Reset to factory defaults. D. Uninstall the new app and scan for malware.
D. Uninstall the new app and scan for malware.
An employee in the sales department cannot get his laptop to display through a projector. He sees the screen output on the built-in laptop display, but the video is not being displayed through the projector. Which of the following steps would be BEST to try first? A. Check the backlight setting. B. Replace the video card. C. Replace the display. D. Use the fn key to redirect display to the external video port. E. Add video RAM.
D. Use the fn key to redirect display to the external video port.
Which of the following mobile device components are often installed under the bezel of a mobile device display? (Select three.) A. Touchscreen digitizer B. OLED C. OEM D. Wi-Fi antenna wires E. Microphone F. Webcam G. Inverter
D. Wi-Fi antenna wires E. Microphone F. Webcam
You have purchased a refurbished Windows laptop and have just plugged the power adapter into the wall socket to begin charging the battery. However, after several hours of charging, the laptop does not turn on. What is the MOST likely cause of the power issue A. The Windows operating system is faulty and needs to be re-installed. B. One of the memory modules needs to be replaced. C. The hard drive needs to be replaced. D. You have been given the incorrect adapter.
D. You have been given the incorrect adapter.
Listen to exam instructions 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? A. The bezel is not designed to be removed. B. The bezel is glued in place. C. You have been using a metal tool to pry up the bezel. D. You missed a screw.
D. You missed a screw.
Listen to exam instructions 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? A. Digitizer B. OLED C. Inverter D. LCD
A. Digitizer
You are comparing methods for securing your mobile device. Which of the following is the BEST method to secure your device's storage? A. Full device encryption B. Locator applications C. Biometric authentication D. Remote backup applications
A. Full device encryption
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? A. Hotspot B. Lightning C. NFC D. MicroUSB
A. Hotspot
Which of the following LCD display technologies is the BEST choice for use on touchscreen displays? A. In-plane switching (IPS) B. Vertical alignment (VA) C. Touch screen digitizer (TSD) D. Twisted nematic (TN)
A. In-plane switching (IPS)
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? A. Weak or dropped cellular signal B. Unintended Wi-Fi connections C. Leaked personal files D. Unauthorized location tracking
B. Unintended Wi-Fi connections
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? A. Built-in Bluetooth B. USB ports C. FireWire ports D. Infrared wireless E. Docking station
E. Docking station
You are troubleshooting a laptop system that uses a digitizer pad and stylus for user input. The user has complained that tapping the stylus on the digitizer pad taps about one inch to the right of where the taps actually occur. Which of the following actions would MOST likely fix this issue? A. Remove any scratches from the digitizer pad. B. Replace the stylus. C. Hold the stylus at an increased angle. D. Replace the digitizer pad. E. Recalibrate the digitizer pad.
E. Recalibrate the digitizer pad.
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? A. Docking station B. Bluetooth accessibility C. Port replicator D. CGM device
A. Docking station
A landscaping company's employees receive payment for their services using a credit card reader that physically attaches to an Apple mobile device. Which of the following connection types is being used? A. Lightning B. NFC C. Bluetooth D. IR
A. Lightning
Which of the following battery types offers the greatest storage capacity in the smallest amount of space? A. Lithium Ion (Li-Ion) B. Nickel Metal Hydride (NiMH) C. Carbon D. Nickel Cadmium (NiCad)
A. Lithium Ion (Li-Ion)
A technician is tasked with configuring a mobile device to connect securely to the company network when the device is used at off-site locations where only internet connectivity is available. Which of the following should the technician configure? A. VPN B. Bluetooth C. Hotspot D. IMAP
A. VPN
After entering a user ID and password, an online banking user must enter a PIN that was sent as a text message to their mobile phone. Which of the following digital security methods is being used A. Smart card B. Multifactor authentication C. Firewall D. DLP
B. Multifactor authentication
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? A. IMAP B. S/MIME C. IMEI D. POP3
B. S/MIME
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? A. MicroSD B. USB C. Bluetooth D. Docking station
C. Bluetooth
Lately, your laptop shuts down before it reaches the 5% set in your Windows Power Scheme. You suspect that the power meter is incorrectly reporting the battery power level. You want to calibrate the battery to synchronize the power meter to the actual battery charge capacity. However, the laptop system does not include a calibration tool. You decide to perform a manual calibration. Which of the following is the first step you need to take when manually calibrating the battery? A. Change the power settings to prevent an automatic shutdown. B. Unplug the laptop and run it until it reaches a level below 3%. C. Charge the battery to 100%. D. Replace the battery with a known good battery.
C. Charge the battery to 100%.
You want to use hibernation on your Windows notebook. What does it need to have for this to work? A. A minimum of 1 GB of RAM B. 1 gigahertz (GHz) or faster processor C. Enough free hard disk space D. A UPS
C. Enough free hard disk space
Joe, a mobile device user, is allowed to connect his personally owned tablet to a company's network. Which of the following policies defines how company data is protected on Joe's tablet? A. Remote Backup Policy B. Trusted Sources Policy C. Device Encryption Policy D. BYOD Policy
D. BYOD Policy