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ComptiA+ > 3. Mobile Devices > Flashcards

3. Mobile Devices Flashcards

1
Q

What is the difference between IMAP and POP3?

A

IMAP synchronizes email with the server, while POP3 downloads email and removes it from the server.

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2
Q

What is an MDM solution?

A

Mobile Device Management software used to secure and manage mobile devices in an organization.

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3
Q

What is the purpose of tethering?

A

Sharing a mobile device’s internet connection with other devices via USB, Wi-Fi, or Bluetooth.

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4
Q

What is NFC, and how is it used?

A

Near Field Communication; used for contactless payments and quick data transfer between devices.

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5
Q

What are the two main types of mobile operating systems?

A

Android and iOS.

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6
Q

What is the function of a digitizer in a touchscreen?

A

Converts touch input into digital signals for the device to process.

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7
Q

What type of display technology is commonly used in smartphones?

A

OLED or AMOLED for high-quality visuals and better energy efficiency.

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8
Q

What is the purpose of an IMEI number?

A

The International Mobile Equipment Identity uniquely identifies a mobile device on a network.

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9
Q

What is the difference between Wi-Fi and cellular data?

A

Wi-Fi connects to local wireless networks, while cellular data uses mobile networks for internet access.

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10
Q

What is the primary role of a SIM card?

A

Stores subscriber information and allows access to the cellular network.

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11
Q

What is Airplane Mode?

A

A feature that disables all wireless communication, including Wi-Fi, Bluetooth, and cellular networks.

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12
Q

What is the function of a mobile hotspot?

A

Allows a mobile device to share its internet connection with other devices via Wi-Fi.

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13
Q

What is the purpose of NFC (Near Field Communication)?

A

Enables short-range communication between devices, often used for mobile payments or file sharing.

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14
Q

What is tethering?

A

Sharing a mobile device’s internet connection with another device via USB, Bluetooth, or Wi-Fi.

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15
Q

What is the primary difference between USB-C and Lightning cables?

A

USB-C is a universal standard, while Lightning is proprietary to Apple devices.

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16
Q

What is the function of MDM (Mobile Device Management) software?

A

Allows IT administrators to monitor, manage, and secure mobile devices used in an organization.

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17
Q

What is a common reason for a swollen mobile device battery?

A

Overcharging, physical damage, or a manufacturing defect.

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18
Q

What is the difference between GPS and AGPS?

A

GPS uses satellite signals for location tracking, while AGPS uses network assistance for faster and more accurate positioning.

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19
Q

What is a jailbreak on iOS devices?

A

The process of removing software restrictions imposed by Apple to allow unauthorized apps and customizations.

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20
Q

What is the purpose of a device’s accelerometer?

A

Detects changes in orientation and movement, used in screen rotation and fitness apps.

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21
Q

What is the difference between an unlocked and locked mobile phone?

A

Unlocked phones can work with any carrier, while locked phones are restricted to a specific carrier.

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22
Q

What is the role of Bluetooth in mobile devices?

A

Enables short-range wireless communication for devices like headphones, speakers, and wearables.

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23
Q

What are the differences between Android APK files and iOS IPA files?

A

APK files are Android app packages, while IPA files are iOS app packages.

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24
Q

What is the purpose of a mobile device’s IR blaster?

A

Allows the device to act as a remote control for TVs or other IR-enabled devices.

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25
Q

What is a QR code, and how is it used on mobile devices?

A

A scannable code that stores data like URLs, often used for payments, authentication, or information sharing.

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26
Q

What is the function of a VPN app on mobile devices?

A

Encrypts internet traffic, providing privacy and secure access to restricted networks.

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27
Q

What is the difference between factory reset and hard reset?

A

A factory reset erases all user data and restores default settings, while a hard reset is a forced restart to recover a frozen device.

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28
Q

What is the main purpose of biometric authentication on mobile devices?

A

Uses fingerprints, facial recognition, or other physical traits to enhance security.

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29
Q

What is the difference between an LCD and an OLED screen?

A

LCD uses a backlight for display, while OLED has self-illuminating pixels, offering better contrast and energy efficiency.

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30
Q

What is a mobile device’s gyroscope used for?

A

Measures the rotation of the device to detect changes in orientation and support functions like screen rotation and motion-based games.

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31
Q

What is the purpose of a device’s proximity sensor?

A

Detects the presence of objects near the device, often used to turn off the screen during calls to prevent accidental touches.

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32
Q

What is the role of a mobile device’s compass?

A

Helps determine the device’s orientation relative to the Earth’s magnetic field, commonly used in navigation apps.

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33
Q

What is the difference between 3G, 4G, and 5G networks?

A

3G offers basic mobile data speeds, 4G provides faster internet, and 5G offers ultra-fast speeds with low latency for advanced applications.

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34
Q

What is the difference between a soft reset and a hard reset on a mobile device?

A

A soft reset restarts the device without erasing data, while a hard reset restores the device to its factory settings, erasing all data.

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35
Q

What is the purpose of a mobile device’s ambient light sensor?

A

Adjusts the screen brightness automatically based on the surrounding light conditions to save battery and improve visibility.

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36
Q

What is the role of the kernel in a mobile operating system?

A

The kernel is the core part of the OS, managing hardware resources and providing an interface between the hardware and software.

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37
Q

What is the difference between an app and a web app?

A

An app is installed on a mobile device, while a web app runs in a web browser and requires an internet connection.

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38
Q

What is the function of a mobile device’s NFC antenna?

A

Allows short-range communication for features like contactless payments and device pairing.

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39
Q

What is the purpose of a mobile device’s fingerprint sensor?

A

Provides biometric authentication for secure device unlocking and app access.

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40
Q

What is the role of the mobile device’s RAM?

A

Temporary storage for data and instructions needed by the device’s processor to run applications and perform tasks.

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41
Q

What is the function of a mobile device’s eSIM?

A

A digital SIM card that allows users to switch carriers or plans without needing a physical SIM card.

42
Q

What is the difference between an Android phone and an iPhone?

A

Android phones run on the Android OS, while iPhones run on Apple’s iOS, with different ecosystems and app stores.

43
Q

What is a mobile device’s system update?

A

A software update that provides bug fixes, new features, or security patches to improve the device’s performance and security.

44
Q

What is the purpose of a mobile device’s storage?

A

Stores data such as apps, media, and system files required for the device to function.

45
Q

What is the function of the “Do Not Disturb” mode on mobile devices?

A

Temporarily silences notifications, calls, and alerts to minimize distractions.

46
Q

What is the role of a mobile device’s app store?

A

A marketplace for downloading, purchasing, and updating apps on mobile devices, such as Google Play Store or Apple App Store.

47
Q

What is the purpose of the app permission system in mobile devices?

A

Allows users to control which features and data an app can access, enhancing privacy and security.

48
Q

What is the difference between Wi-Fi calling and regular cellular calling?

A

Wi-Fi calling uses a Wi-Fi network to make calls, while cellular calling uses a mobile network.

49
Q

What is the purpose of a mobile device’s secure enclave?

A

A dedicated processor that stores sensitive information like passwords and encryption keys, ensuring high security.

50
Q

What is the difference between a standard SIM card and a micro SIM card?

A

Micro SIM cards are smaller than standard SIM cards but serve the same purpose of connecting the mobile device to a cellular network.

51
Q

What is the role of the operating system in a mobile device?

A

Manages hardware resources, runs applications, and provides user interface elements and services on the device.

52
Q

What is the purpose of a mobile device’s accelerometer?

A

Detects changes in movement and orientation, often used for screen rotation and fitness tracking.

53
Q

What is the primary difference between Android and iOS operating systems?

A

Android is open-source and used on a variety of devices, while iOS is proprietary to Apple devices.

54
Q

What is the purpose of a mobile hotspot feature?

A

Allows a mobile device to share its cellular data connection with other devices via Wi-Fi.

55
Q

What is the function of an infrared (IR) blaster in mobile devices?

A

Enables the device to control other devices, such as TVs or air conditioners, using infrared signals.

56
Q

What is the purpose of mobile device encryption?

A

Protects the data stored on the device by making it unreadable to unauthorized users.

57
Q

What is a mobile device’s IMEI number used for?

A

Uniquely identifies a mobile device on a network, often used for tracking and security purposes.

58
Q

What is the role of a mobile device’s gyroscope?

A

Measures the rotation of the device, used in navigation, gaming, and augmented reality (AR) applications.

59
Q

What is a common use for a mobile device�s gyroscope?

A

It is commonly used in gaming, navigation apps, and virtual reality (VR) apps to track orientation and movement.

60
Q

What is the difference between mobile data and Wi-Fi?

A

Mobile data uses cellular networks to access the internet, while Wi-Fi uses a local wireless network.

61
Q

What is the purpose of two-factor authentication (2FA) on mobile devices?

A

Adds an extra layer of security by requiring two forms of identification (e.g., password and a one-time code).

62
Q

What is a mobile device’s proximity sensor used for?

A

Detects when the device is near a user’s face, typically used to turn off the screen during calls.

63
Q

What is a QR code, and how is it used on mobile devices?

A

A scannable code that can store information like URLs or payment details, commonly used for quick access to websites or information.

64
Q

What is the purpose of Airplane Mode on mobile devices?

A

Disables all wireless communication (Wi-Fi, Bluetooth, cellular) to prevent interference with aircraft systems.

65
Q

What is the function of the screen protector on a mobile device?

A

Protects the device’s screen from scratches, cracks, and damage.

66
Q

What is the purpose of an Android app’s permissions system?

A

Allows users to control which features (e.g., camera, contacts, location) an app can access.

67
Q

What is the role of a mobile device�s RAM?

A

Temporarily stores data that the device�s processor needs to access quickly while running apps and processes.

68
Q

What is the difference between LTE and 5G networks?

A

LTE (4G) provides high-speed internet, while 5G offers even faster speeds and lower latency for advanced applications.

69
Q

What is a mobile device’s VPN app used for?

A

Encrypts internet traffic to secure the device’s connection to the internet and protect privacy.

70
Q

What is the function of a device’s fingerprint scanner?

A

Provides biometric authentication to unlock the device or access secure apps.

71
Q

What is the role of the SIM card in a mobile device?

A

Stores information about the user�s account and connects the device to the mobile network.

72
Q

What is the difference between Wi-Fi and Bluetooth?

A

Wi-Fi is used for high-speed internet access, while Bluetooth is used for short-range wireless communication between devices.

73
Q

What is the purpose of the device’s NFC functionality?

A

Allows for contactless communication with other devices or payment systems, such as in mobile payments.

74
Q

What is the purpose of mobile device management (MDM) software?

A

Allows administrators to remotely manage, secure, and configure mobile devices within an organization.

75
Q

What is a factory reset on a mobile device?

A

Restores the device to its original factory settings, erasing all user data, apps, and settings.

76
Q

What is the difference between Android APK files and iOS IPA files?

A

APK files are Android app packages, while IPA files are iOS app packages.

77
Q

What is the primary function of a mobile hotspot?

A

Allows a mobile device to share its cellular data connection with other devices via Wi-Fi.

78
Q

What is a SIM card’s primary role in a mobile device?

A

Provides the device with an identifier on the cellular network, enabling communication and data usage.

79
Q

What does “rooting” an Android device mean?

A

Gaining administrative access to the device�s system files, allowing for customizations and installation of apps outside the official app store.

80
Q

What is a mobile device’s accelerometer used for?

A

Detects the movement and orientation of the device, used for tasks like screen rotation and gaming.

81
Q

What is the purpose of mobile device encryption?

A

Protects the data stored on the device by making it unreadable to unauthorized users.

82
Q

What is the role of a mobile device’s system update?

A

Provides bug fixes, security patches, and new features to improve the device’s performance and functionality.

83
Q

What is the function of the device’s memory card slot?

A

Allows for external storage expansion, enabling the user to store more data, such as photos, apps, and media files.

84
Q

What is a common use of the device’s camera on a mobile device?

A

Capturing photos and videos, scanning QR codes, and using augmented reality (AR) applications.

85
Q

What is the purpose of the mobile device’s gyroscope?

A

Detects rotation and orientation of the device, often used in gaming and navigation applications.

86
Q

What is a mobile device’s “Do Not Disturb” feature used for?

A

Silences calls, notifications, and alerts to avoid disturbances, typically used during meetings or while sleeping.

87
Q

What is a mobile device’s ambient light sensor used for?

A

Adjusts the screen brightness automatically based on the surrounding light conditions to conserve battery.

88
Q

What is the function of a mobile device’s screen protector?

A

Guards against scratches, cracks, and other damage to the screen.

89
Q

What is the role of Bluetooth in mobile devices?

A

Enables short-range wireless communication, used for connecting accessories like headphones, speakers, and wearables.

90
Q

What is the primary difference between an unlocked and a locked mobile phone?

A

An unlocked phone can be used with any carrier, while a locked phone is restricted to one carrier.

91
Q

What is the difference between a mobile device�s hard reset and soft reset?

A

A hard reset restores the device to factory settings, while a soft reset simply restarts the device.

92
Q

What is the purpose of a mobile device’s RAM?

A

Temporary storage for data and instructions needed by the device�s processor to run applications and perform tasks.

93
Q

What is the role of a mobile device’s GPU?

A

Handles graphics rendering, providing smooth visuals for apps, games, and video playback.

94
Q

What is the purpose of the “Find My Device” feature?

A

Helps locate a lost or stolen device and remotely lock or erase its data for security purposes.

95
Q

What is the function of mobile device management (MDM) software?

A

Allows IT administrators to remotely manage, secure, and configure mobile devices within an organization.

96
Q

What is the difference between a mobile device’s internal storage and external storage?

A

Internal storage is built into the device for the operating system and apps, while external storage is used for extra data, such as media files.

97
Q

What is the function of a mobile device’s compass?

A

Measures the orientation of the device relative to the Earth’s magnetic field, used for navigation and location-based apps.

98
Q

What is the role of the mobile device’s vibration motor?

A

Provides haptic feedback by vibrating the device for notifications, calls, or interactive elements in apps.

99
Q

What is a common reason for poor mobile device battery performance?

A

Excessive background apps, high screen brightness, or outdated software can drain the battery faster.

100
Q

What is the difference between a mobile app and a web app?

A

A mobile app is installed directly on the device, while a web app runs within a browser and requires an internet connection.

ComptiA+ (7 decks)

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