Apple Certified Support Professional (ACSP) Practice Exam 2026 – All-in-One Guide to Master Your Certification!

The Document File System (DFS) is not supported by Mac OS, which makes this choice the correct answer to the question. While Mac OS can read from NTFS, which is utilized primarily by Windows operating systems, it does not offer full support for writing to NTFS without third-party software.

Mac OS Extended (Journaled) is the standard file system used by macOS prior to the introduction of APFS (Apple File System). It is specifically designed for the macOS environment, providing features like journaling to enhance reliability.

The Unix File System (UFS) is also supported by macOS, providing compatibility with certain Unix-based systems. Therefore, both Mac OS Extended (Journaled) and UFS are integral and supported file systems.

In contrast, DFS does not have a presence or support within the macOS architecture, leading to its identification as the option that does not fit.