Comprehensive and Detailed Explanation From Exact Extract:
The ext4 (Fourth Extended Filesystem) is the most widely used default filesystem in modern Linux distributions. It is designed for high performance, scalability, and reliability, and is supported by all mainstream Linux kernels.
A. exFAT is used for cross-platform external drives, not native Linux systems.
B. APFS is Apple's proprietary filesystem for macOS and iOS.
D. NTFS is the default filesystem for Windows, not Linux.
[Reference:, CompTIA A+ 220-1102 Objective 1.9: Identify common features and tools of the Linux client/desktop OS., Study Guide Section: Filesystem types in Linux — ext3, ext4, and their characteristics, ]
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