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Technical Support & Troubleshooting Flashcards

7 cards from real ACT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Technical Support & Troubleshooting flashcards as text

  1. A user reports their Mac's audio output has no sound after connecting and disconnecting an HDMI display. What is the likely cause?

    Answer: macOS switched audio output to HDMI and did not revert

    macOS can automatically switch audio output to HDMI when a display is connected, and the selection may persist after disconnection.

  2. Which Apple tool is used to perform hardware diagnostics on a Mac to check for memory or logic board issues?

    Answer: Apple Diagnostics (hold D at startup)

    Apple Diagnostics runs hardware tests on Mac components and can identify issues with memory, storage, and other hardware by holding D at startup.

  3. A trainer needs to remotely help a student troubleshoot their Mac screen. Which built-in macOS feature supports screen sharing without third-party software?

    Answer: Screen Sharing (via Finder > Go > Network or FaceTime screen share)

    macOS includes a built-in Screen Sharing feature accessible through Finder's network view or enabled via System Settings for remote support.

  4. An iPhone app purchased from the App Store repeatedly crashes on launch after an iOS update. What should the trainer recommend FIRST?

    Answer: Delete and reinstall the app

    Deleting and reinstalling the app clears corrupted cached data and installs a fresh copy, resolving most post-update launch crashes.

  5. A user's MacBook displays image artifacts and horizontal lines on the screen. What should a trainer suspect first?

    Answer: Failing GPU or display cable connection issue

    Visual artifacts and horizontal lines typically indicate a hardware issue such as a failing GPU, VRAM, or a loose display cable.

  6. A user enables Low Power Mode on their Mac but reports it reverts after restarting. What should the trainer clarify?

    Answer: Low Power Mode on Mac does not persist across restarts by default on some models

    On certain Mac models, Low Power Mode may not persist across restarts and must be re-enabled manually or set within Battery preferences.

  7. A user cannot open a PDF in Preview and receives a 'damaged file' error. The file opens correctly on another Mac. What is the BEST first troubleshooting step?

    Answer: Re-download or re-transfer the file to rule out a corrupted local copy

    A 'damaged file' error often results from a corrupted transfer; re-downloading or re-copying the file is the fastest and safest first step.