Multiple choice technology operating systems

From the below which one is not a file system in unix ?

  1. iso9660

  2. proc

  3. FFS

  4. MFS

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

iso9660 is the CD-ROM file system, proc is the process information filesystem, and FFS is the Unix Fast File System. MFS typically refers to the Macintosh File System, which is not native to Unix, though some Unix systems have a Memory File System with the same abbreviation.