John works as a Network Administrator for Perfect Solutions Inc. The company has a Linux-based
network. John is working as a root user on the Linux operating system. Which of the following
commands will John use to display information about all mounted file systems?
Each correct answer represents a complete solution. Choose all that apply.

A.
df

B.
du

C.
ls

D.
df -m

Explanation:

According to the scenario, John can use any of these two commands. The df command will

display information about all mounted file systems in KB while the df -m command will display
information in MB.