Practice Test GeeksACMT - Apple Certified Macintosh Technician Practice Test
← All ACMT Flashcard Decks

Storage & Memory Flashcards

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

Read the first 6 Storage & Memory flashcards as text

  1. A Mac Pro supports which type of upgradeable RAM modules?

    Answer: ECC DDR4 RDIMM modules in specific slot configurations

    The Mac Pro uses standard ECC DDR4 RDIMM modules installed in a specific slot configuration, making it one of the few current Macs with user-upgradeable RAM.

  2. What is the purpose of the 'Startup Security Utility' available in macOS Recovery on Apple Silicon Macs?

    Answer: To configure security policies for booting macOS and allow installation of third-party kernel extensions

    Startup Security Utility lets administrators set security policies including Full Security, Reduced Security, and Permissive Security, controlling which software can boot on the Mac.

  3. Which condition would cause macOS to automatically delete Time Machine local snapshots?

    Answer: The startup disk is getting full and macOS reclaims space by removing older snapshots

    macOS automatically deletes older local Time Machine snapshots when the startup disk is running low on free space to reclaim storage.

  4. A technician replaces the SSD in an Intel MacBook Pro. After reinstalling macOS, the customer's apps require re-authorization. Why?

    Answer: The new SSD has a different serial number that changes the hardware fingerprint used by app licensing

    Some apps tie their licenses to the hardware configuration including storage identifiers; replacing the SSD may change the hardware fingerprint, requiring the customer to re-enter or reactivate licenses.

  5. What does 'Erase Volume Group' in Disk Utility do on an APFS volume?

    Answer: Erases all volumes in the APFS container including the Data and System volumes

    'Erase Volume Group' removes all APFS volumes within the container including the paired System and Data volumes, fully wiping the drive for a clean macOS installation.

  6. Why is defragmentation unnecessary on Mac SSDs running APFS?

    Answer: SSDs have no moving parts and APFS manages free space without fragmentation penalties, making defrag harmful rather than helpful

    SSDs access all locations equally fast (no seek time), and unnecessary writes from defragmentation reduce SSD lifespan; APFS's architecture avoids fragmentation issues by design.