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210-255 · Question #169
210-255 Question #169: Real Exam Question with Answer & Explanation
The correct answer is A: EXT4. EXT4 is the only Linux filesystem listed that supports both journaling and an unlimited number of subdirectories, making it the most capable of the ext family.
Host-Based Analysis
Question
Which Linux tile system supports journaling and an unlimited number of sub directories?
Options
- AEXT4
- BEXT2
- CEXT3
- DTFS
Explanation
EXT4 is the only Linux filesystem listed that supports both journaling and an unlimited number of subdirectories, making it the most capable of the ext family.
Common mistakes.
- B. EXT2 does not support journaling at all, which makes it vulnerable to data corruption after unclean shutdowns.
- C. EXT3 added journaling over EXT2 but retained the 31,998 subdirectory limit per directory, so it does not support unlimited subdirectories.
- D. TFS is not a recognized standard Linux filesystem; no such filesystem exists in mainstream Linux use.
Concept tested. Linux EXT4 filesystem journaling and directory limits
Reference. https://www.kernel.org/doc/html/latest/filesystems/ext4/index.html
Topics
#EXT4#Linux file systems#journaling#host forensics
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