CompTIA A+ Domain 1: Mobile devices Welcome to your CompTIA A+ Domain 1: Mobile devices 1. CompTIA A+: Mobile devices What is the primary purpose of an accelerometer in mobile devices? A. To measure atmospheric pressure B. To detect the device's orientation C. To enhance sound quality D. To increase screen brightness automatically None 2. CompTIA A+: Mobile devices In mobile device security, what does a 'sandbox' environment refer to? A. A storage space for deleted files B. An isolated area where apps run separately from the main operating system C. A tool for enhancing Wi-Fi connectivity D. A feature for tracking device location None 3. CompTIA A+: Mobile devices Which technology is primarily used for short-range wireless communication between mobile devices and peripheral accessories? A. NFC B. Wi-Fi C. LTE D. Bluetooth None 4. CompTIA A+: Mobile devices What is the primary function of an IMEI number in mobile devices? A. To track the device's location B. To identify the device on a cellular network C. To secure the device with a password D. To enhance the device's processing power None 5. CompTIA A+: Mobile devices Which of the following best describes the term 'tethering' in the context of mobile devices? A. Connecting a mobile device to a computer to share internet access B. Locking the device with a security code C. Synchronizing data between a mobile device and a cloud service D. Upgrading the device's operating system None 6. CompTIA A+: Mobile devices What is the primary purpose of a VPN on a mobile device? A. To increase the processing speed B. To enhance audio quality during calls C. To provide secure, encrypted internet connectivity D. To improve GPS accuracy None 7. CompTIA A+: Mobile devices In mobile devices, what does the term 'jailbreaking' refer to? A. Removing manufacturer or carrier restrictions from the device B. Installing additional memory in the device C. Reporting a stolen device to the authorities D. Enhancing the device's battery life None 8. CompTIA A+: Mobile devices Which mobile device component is responsible for converting digital data into analog sound signals? A. GPU B. DAC (Digital-to-Analog Converter) C. NFC module D. Accelerometer None 9. CompTIA A+: Mobile devices What is the main function of Gorilla Glass in mobile devices? A. To enhance touch sensitivity B. To protect the screen from scratches and breakage C. To improve display resolution D. To reduce battery consumption None 10. CompTIA A+: Mobile devices Which of the following components is essential for enabling facial recognition technology in mobile devices? A. Barometer B. Infrared camera C. Accelerometer D. AMOLED display None 11. CompTIA A+: Mobile devices Which feature in mobile devices adjusts the screen's brightness based on ambient light conditions? A. Adaptive Brightness B. Night Mode C. Blue Light Filter D. Power Saving Mode None 12. CompTIA A+: Mobile devices In the context of mobile devices, what is the primary function of an OLED display? A. To increase battery life B. To provide a flexible screen C. To deliver higher contrast and deeper blacks D. To protect the screen from physical damage None 13. CompTIA A+: Mobile devices What does the term 'rooting' refer to in Android mobile devices? A. Installing a custom operating system B. Gaining administrative privileges C. Backing up the device data D. Encrypting the device storage None 14. CompTIA A+: Mobile devices Which component is crucial for a mobile device's GPS functionality? A. NFC chip B. Gyroscope C. GPS receiver D. DAC None 15. CompTIA A+: Mobile devices What is the main purpose of a mobile device's gyroscope sensor? A. To measure the device's acceleration B. To detect changes in orientation and rotation C. To adjust the screen brightness D. To enhance sound quality None 16. CompTIA A+: Mobile devices In mobile devices, what technology is primarily used for contactless payment systems? A. Bluetooth B. Wi-Fi C. NFC (Near Field Communication) D. LTE None 17. CompTIA A+: Mobile devices Which technology in mobile devices enables wireless charging? A. Inductive charging B. Solar charging C. Kinetic charging D. Turbo charging None 18. CompTIA A+: Mobile devices What is the primary function of a mobile device's proximity sensor? A. To detect the presence of nearby objects without physical contact B. To measure environmental temperature C. To monitor the user's heart rate D. To enhance GPS accuracy None 19. CompTIA A+: Mobile devices In mobile devices, what is the purpose of a pico projector? A. To enhance the device's audio output B. To project the device's display onto a larger screen C. To improve cellular signal strength D. To scan QR codes and barcodes None 20. CompTIA A+: Mobile devices What does the term 'hotspot' refer to in the context of mobile devices? A. A feature that allows the device to act as a Wi-Fi access point B. An area on the screen with increased touch sensitivity C. A component that overheats frequently D. A region with strong cellular reception None 1 out of 20 Time is Up! Time's up
