75. A customer wants to format an external hard drive to work on both Windows and macOS. Which of the following filesystems is the best to use?

Answer: B

Explanation:

exFAT is the best filesystem to use for compatibility between Windows and macOS.

exFAT is specifically designed to be compatible with both Windows and macOS, making it the ideal choice for formatting an external hard drive to work seamlessly across both operating systems.

A) NTFS

NTFS is primarily used by Windows operating systems and while macOS can read NTFS drives, it cannot write to them without third-party software. This limits the functionality of an external hard drive when shared between the two systems.

B) exFAT

exFAT is optimized for flash drives and external hard drives, providing full read and write access on both Windows and macOS without any restrictions. This makes it the most suitable choice for cross-platform compatibility.

C) APFS

APFS (Apple File System) is designed exclusively for macOS and is not compatible with Windows. Formatting a drive with APFS would prevent Windows users from accessing the drive, making it an unsuitable option for the customer's needs.

D) XFS

XFS is a high-performance filesystem primarily used in Linux environments. It does not support Windows or macOS natively, making it an impractical choice for a drive that needs to be shared between these two operating systems.

Conclusion

exFAT is the definitive choice for formatting an external hard drive intended for use on both Windows and macOS due to its broad compatibility and ease of use. Other options either limit functionality or are not supported by one of the operating systems, making them unsuitable for the customer's requirements.