Final answer:
The filesystem standard for CDROMs is ISO 9660, not Ext2 or Ext3 which are used for Linux hard drives.
Step-by-step explanation:
The filesystem used for CDROM is ISO 9660.
ISO 9660 is a standard file system for optical discs, including CD-ROMs. It is a read-only filesystem that is designed to be compatible with different operating systems such as Windows, macOS, and Linux.
ISO 9660 uses a hierarchical structure to organize files and directories on the CDROM, similar to the way files are organized in folders on a computer's hard drive.