Which file type is commonly used to store a disk image of an optical disc?

Which file type is commonly used to store a disk image of an optical disc?

• A. ISO Image
• B. IMG File
• C. BIN
• D. DMG

Answer: (A)

The main idea is that optical disc images are typically stored as ISO images because ISO is the standard format that captures the entire disc content, including the filesystem, into a single file. This makes it easy to distribute, mount as a virtual drive on Windows, macOS, or Linux, or burn to a real disc to recreate the original disc. ISO images are widely supported and can represent CDs, DVDs, and Blu-rays, including bootable discs. Other formats like IMG or BIN are generic raw images without a standardized optical-disc structure, which can cause compatibility issues. DMG is a macOS-specific disk image format often used for distributing software on macOS and is not the conventional choice for optical-disc images.

The main idea is that optical disc images are typically stored as ISO images because ISO is the standard format that captures the entire disc content, including the filesystem, into a single file. This makes it easy to distribute, mount as a virtual drive on Windows, macOS, or Linux, or burn to a real disc to recreate the original disc. ISO images are widely supported and can represent CDs, DVDs, and Blu-rays, including bootable discs. Other formats like IMG or BIN are generic raw images without a standardized optical-disc structure, which can cause compatibility issues. DMG is a macOS-specific disk image format often used for distributing software on macOS and is not the conventional choice for optical-disc images.