ACT Technical Support & Troubleshooting 3 — Questions and Answers
Question 1: A Mac boots to a folder icon with a flashing question mark. What does this indicate?
- The display cable is loose
- macOS cannot find a valid startup disk (Correct answer)
- The firmware password is enabled
- FileVault encryption failed
Correct answer: macOS cannot find a valid startup disk
A flashing folder with a question mark means the Mac's firmware cannot locate a bootable macOS installation.
Question 2: After enabling FileVault on a Mac, a user forgets their password and has no recovery key. What is the outcome?
- Data can be recovered using Apple Configurator 2
- The data on the drive is permanently inaccessible (Correct answer)
- Disk Utility can decrypt the volume without credentials
- Safe Mode bypasses FileVault encryption
Correct answer: The data on the drive is permanently inaccessible
FileVault uses AES-128 or AES-256 encryption, and without the password or recovery key, encrypted data cannot be recovered.
Question 3: A trainer is troubleshooting an iPhone that shows 'No SIM Card Installed' after a drop. After reseating the SIM tray, the error persists. What is the NEXT step?
- Update iOS
- Test with a known-good SIM card in the same tray slot (Correct answer)
- Reset network settings
- Toggle Airplane Mode
Correct answer: Test with a known-good SIM card in the same tray slot
Testing with a known-good SIM isolates whether the issue is the SIM itself or the device's SIM reader hardware.
Question 4: Which macOS startup modifier key combination boots a Mac into Safe Mode to help isolate software conflicts?
- Command + R
- Shift (held during startup) (Correct answer)
- Option + Command + P + R
- Command + S
Correct answer: Shift (held during startup)
Holding Shift during startup boots macOS into Safe Mode, which disables third-party kernel extensions and login items.
Question 5: A user reports Bluetooth audio dropouts on their Mac. Other Bluetooth devices nearby work fine. What is a common cause specific to this scenario?
- Wi-Fi and Bluetooth interference on the 2.4 GHz band (Correct answer)
- Faulty Bluetooth antenna requiring hardware replacement
- macOS Bluetooth framework corruption
- USB-C hub interfering with wireless signals
Correct answer: Wi-Fi and Bluetooth interference on the 2.4 GHz band
Wi-Fi operating on the 2.4 GHz band can interfere with Bluetooth, causing audio dropouts, especially in congested wireless environments.
Question 6: After migrating data with Migration Assistant, a user's apps from the old Mac are not functioning on the new Mac with Apple silicon. What is the MOST likely cause?
- Migration Assistant does not transfer applications
- The apps are Intel-only and lack Universal binary or Rosetta support (Correct answer)
- The user's account permissions were not transferred
- System Preferences need to be reconfigured manually
Correct answer: The apps are Intel-only and lack Universal binary or Rosetta support
Intel-only (x86_64) apps require Rosetta 2 to run on Apple silicon Macs, and some older apps may not function even with Rosetta.
Question 7: A user's Mac displays 'Your startup disk is almost full' warning. Which built-in macOS feature should the trainer direct them to first?
- Time Machine
- Storage Management (About This Mac > Storage > Manage) (Correct answer)
- Disk Utility
- iCloud Drive settings
Correct answer: Storage Management (About This Mac > Storage > Manage)
Storage Management in macOS provides recommendations for reducing disk usage, including optimizing storage, emptying trash automatically, and identifying large files.
ACT Technical Support & Troubleshooting 3
A Mac boots to a folder icon with a flashing question mark.
What does this indicate?