Which utility is used for checking the health of an HDFS file system?

The correct answer is A. fsck.

fsck is a utility used to check the integrity of a file system. It can be used to repair any errors that are found. fsck is typically run on a regular basis to ensure that the file system is healthy.

B. fchk is not a valid command.

C. fsch is not a valid command.

D. fcks is not a valid command.