COMPTIA A+ Practice Exam

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Ace your COMPTIA A+ certification with our practice exam. Engage with a variety of questions including multiple choice and performance-based, complete with hints and detailed explanations. Prepare effectively and boost your confidence for the big day!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

ext4 is backward-compatible with which file systems?

HFS+ and FAT32
NTFS and HFS+
ext2 and ext3
exFAT and FAT16

The correct answer is: ext2 and ext3

The correct choice highlights the backward compatibility of the ext4 file system with ext2 and ext3. This means that an ext4 file system can read and write data from ext2 and ext3 file systems without requiring data conversion or loss. This compatibility is important for users who may want to upgrade their file system from ext3 to ext4 while maintaining access to existing data. Ext4 maintains the same underlying storage structure as ext2 and ext3, allowing for an easier transition. Users can also mount ext3 and ext2 partitions in read/write mode on an ext4 system, ensuring seamless data access across different versions of the ext file system. This feature facilitates system upgrades and enhances data integrity over time by allowing users to retain older filesystems alongside newer ones. Other choices involve file systems that do not share this backward compatibility with ext4, primarily because they belong to different families or have differing architectures. For instance, HFS+, NTFS, exFAT, and FAT16 are primarily used in different operating environments and not designed to support ext file systems, which is why they are not relevant to this question about ext4’s compatibility.