220-1102 Mobile OS Features and Tools Practice Test 2 — 15 Questions

Question 1

A company deploys a fleet of Android tablets that need to be configured so that only pre-approved apps can be installed, and the Google Play Store must be hidden from users. The tablets are not enrolled in an MDM. Which Android feature can be used to achieve this without third-party software?

Accepted Answer

Use a free kiosk app that utilizes Android's Lock Task Mode to pin approved apps and hide the launcher.. Android's 'Kiosk Mode' or 'Lock Task Mode' (via a Device Policy Controller app) can restrict the device to a set of approved apps and hide the launcher. However, without an MDM, the technician must manually set up a managed configuration using Android's built-in 'Set up a Kiosk' feature (available in some Android versions) or use a free app like 'Kiosk Browser Lockdown'. Guest Mode does not restrict app installation, and Safe Mode is for troubleshooting. The correct answer here is using a dedicated kiosk app that leverages Android's 'Lock Task Mode' API.

Answer

Enable Guest Mode and restrict app installation via parental controls.

Answer

Boot the device into Safe Mode and disable the Play Store from there.

Answer

Remove the Google account from the device and disable the Play Store via Settings > Apps.

Question 2

A user reports that their iPhone 13 is not receiving text messages from Android users, but iMessage conversations with other iPhone users work fine. After checking that the user is not blocked, which step should you take to resolve this issue?

Accepted Answer

Disable iMessage in Settings > Messages.. This is a classic symptom of iMessage being stuck on the user's phone number. When an iPhone user switches to Android or if iMessage activation fails, messages from Android users may not arrive. The fix is to turn off iMessage, which forces the phone to use SMS/MMS for all messages. Resetting network settings or toggling Airplane Mode are not targeted solutions.

Answer

Reset Network Settings from General > Reset.

Answer

Toggle Airplane Mode on and off.

Answer

Sign out of iCloud and sign back in.

Question 3

A user's iPhone is running iOS 16 and they cannot update to the latest iOS 17 because the 'Software Update' section in Settings shows 'Unable to Check for Update'. The device is connected to Wi-Fi and has sufficient storage. Which advanced troubleshooting step should you take to resolve this update issue?

Accepted Answer

Use a computer with Finder (macOS) or iTunes (Windows) to download and install the update.. The error 'Unable to Check for Update' on iOS often indicates a corrupted software update cache or a DNS resolution issue. The most effective step is to use a computer (Mac or PC) to force the update via Finder or iTunes, which bypasses the device's own update mechanism. Restarting the device or resetting network settings may not clear the underlying cache issue, and an iCloud restore would be too destructive.

Answer

Reset All Settings from General > Reset.

Answer

Restore the iPhone using an iCloud backup.

Answer

Disable iCloud Private Relay in iCloud settings.

Question 4

An iOS user complains that their iPhone will not connect to a known Wi-Fi network, but other devices on the same network work fine. Which iOS-specific troubleshooting step should you perform first to resolve this issue without erasing any personal data?

Accepted Answer

Use the 'Reset Network Settings' option in Settings > General > Reset.. The correct step is to use the 'Reset Network Settings' option in iOS, which clears saved Wi-Fi networks, VPN configurations, and other network-related settings without affecting personal data like photos or contacts. This often resolves stubborn Wi-Fi connection issues. A full factory reset or iCloud restore would be excessive and data-destructive.

Answer

Reset All Settings from the General > Reset menu.

Answer

Erase All Content and Settings to start fresh.

Answer

Restore the iPhone from an iCloud backup.

Question 5

An iOS user is concerned about a lost iPhone and wants to ensure that if the device is erased, it cannot be reactivated without their Apple ID and password. Which iOS security feature provides this protection?

Accepted Answer

Activation Lock, enabled by Find My iPhone.. Activation Lock is an iOS security feature that is automatically enabled when Find My iPhone is turned on. It ties the device to the owner's Apple ID, preventing anyone from reactivating the device after it is erased or restored without entering the correct Apple ID and password. Find My iPhone locates the device, but Activation Lock provides the anti-theft protection. iCloud Keychain is for passwords, and Lost Mode locks the device but does not prevent reactivation after a wipe.

Answer

Find My iPhone location tracking.

Answer

iCloud Keychain with two-factor authentication.

Answer

Lost Mode in the Find My app.

Question 6

During a software deployment, a technician needs to ensure that a company-issued Android device automatically connects to the corporate Wi-Fi network and disables the camera for security. Which mobile OS tool should be used to enforce these policies?

Accepted Answer

Deploy a Mobile Device Management (MDM) profile. Mobile Device Management (MDM) solutions allow administrators to push configuration profiles and restrictions, such as Wi-Fi settings and camera disablement. This is the standard enterprise tool for managing multiple devices centrally.

Answer

Use the Android Debug Bridge (ADB) to manually set Wi-Fi and camera permissions

Answer

Configure the device's built-in Guest Mode

Answer

Install a third-party camera-blocking app from the Play Store

Question 7

A technician is configuring a shared Android tablet for a retail kiosk. The tablet should only run a single point-of-sale app and prevent users from accessing settings or other apps. Which Android feature should be used?

Accepted Answer

Use Screen Pinning from the Overview (Recent Apps) menu. Android's Screen Pinning allows locking the device to a single app, requiring a PIN to exit. This is ideal for kiosk scenarios. Other options like Guest Mode or Safe Mode do not provide the same level of restriction.

Answer

Enable Guest Mode

Answer

Boot the device into Safe Mode

Answer

Install a launcher replacement app

Question 8

A customer complains that their iOS device's screen orientation is stuck in portrait mode and will not rotate to landscape when they turn the phone sideways. What is the most likely cause and solution?

Accepted Answer

Toggle the Rotation Lock in Control Center. iOS has a Portrait Orientation Lock in Control Center that prevents screen rotation. Toggling this off restores auto-rotation. Other settings like Display Zoom or Accessibility options do not lock orientation in this manner.

Answer

Enable Display Zoom in Settings

Answer

Restart the device

Answer

Adjust the text size in Accessibility

Question 9

During a security audit, a technician discovers that a company Android device has an app that can read SMS messages and access contacts without the user's knowledge. The app was sideloaded. What built-in Android security feature could have prevented this?

Accepted Answer

Google Play Protect. Google Play Protect scans apps for harmful behavior, even sideloaded ones, and can block or warn about dangerous permissions. However, it is not foolproof. The technician should also check 'Install unknown apps' permissions.

Answer

Samsung Knox

Answer

Android Device Manager

Answer

Verified Boot

Question 10

A user on a corporate iOS device complains that they cannot install a required business app from the App Store because the device is 'supervised' and shows a message that installation is blocked. What is the most likely reason and solution?

Accepted Answer

The device has a configuration profile that disables App Store installs; update the MDM policy. Supervised iOS devices can have restrictions enforced via MDM, including blocking app installations. The technician must check the MDM policy to allow app installs or whitelist the specific app.

Answer

The user needs to sign out of iCloud and sign back in

Answer

Perform a factory reset to remove supervision

Answer

Enable 'Allow Untrusted Shortcuts' in Settings

Question 11

A technician is troubleshooting an Android device that cannot receive SMS messages, though data and calls work fine. The user recently installed a messaging app from an unknown source. Which mobile OS feature should be checked first?

Accepted Answer

Check the 'Default SMS app' setting in Apps & Notifications. Android's default SMS app setting determines which app handles SMS. If a third-party app is set as default but malfunctioning, messages may not be received. Checking this setting is the first logical step.

Answer

Verify that the device is not in Airplane Mode

Answer

Clear the cache of the Phone app

Answer

Disable Google Play Protect

Question 12

A user reports that their iPhone's battery drains quickly and the phone feels warm. After checking, you find that several apps are using Location Services in the background. What is the most efficient way to manage this without disabling location for all apps?

Accepted Answer

Set each app's location permission to 'While Using the App'. iOS allows per-app location permissions, including setting to 'While Using the App' to prevent background usage. This reduces battery drain while maintaining functionality. Disabling all location services or resetting settings is too drastic.

Answer

Turn off Location Services entirely in Privacy settings

Answer

Enable Low Power Mode

Answer

Reset all settings on the iPhone

Question 13

A user reports that their Android phone automatically switches from Wi-Fi to cellular data when the Wi-Fi signal is weak, even though they want to stay on Wi-Fi. Which setting should you configure to prevent this behavior?

Accepted Answer

Disable 'Switch to mobile data' in Wi-Fi settings. The 'Switch to mobile data' or 'Smart Network Switch' option in Android Wi-Fi settings automatically transitions to cellular when Wi-Fi is weak. Disabling this keeps the device connected to Wi-Fi, addressing the user's complaint. This is a common mobile OS feature for network management.

Answer

Turn off Bluetooth

Answer

Disable 'Mobile data always active' in Developer Options

Answer

Enable Airplane Mode

Question 14

A user's iPhone is experiencing random restarts and app crashes after installing a new configuration profile for email. The technician needs to remove the profile but cannot find it in Settings. What should the technician check?

Accepted Answer

Check Settings > General > VPN & Device Management. Configuration profiles are managed under Settings > General > VPN & Device Management. If the profile is not there, it may be installed via MDM or be a supervised profile. The technician should verify MDM enrollment.

Answer

Reset the iPhone's network settings

Answer

Use iTunes to restore the iPhone from a backup

Answer

Disable iCloud Keychain

Question 15

A user's iOS device is running out of storage, and they want to offload unused apps without deleting documents and data. Which iOS feature should be recommended, and where is it configured?

Accepted Answer

Use 'Offload Unused Apps' in Settings > General > iPhone Storage. iOS's 'Offload Unused Apps' feature automatically removes app binaries but keeps documents and data. It is found in Settings > General > iPhone Storage. This is distinct from manual deletion or iCloud storage management.

Answer

Enable 'Optimize iPhone Storage' in Photos settings

Answer

Manually delete apps from the Home Screen

Answer

Configure iCloud Storage to offload app data