Which four statements correctly describe the contents of the sysfs filesystem?

Which four statements correctly describe the contents of the sysfs filesystem?

Which four statements correctly describe the contents of the sysfs filesystem?

A.
It contains kernel parameter files.

B.
It contains metadata on all block devices.

C.
It contains metadata on firmware.

D.
It contains metadata on all loaded modules in the kernel.

E.
It contains metadata on device classes.

F.
It contains metadata on system uptime.

Explanation:
Reference: https://www.kernel.org/pub/linux/kernel/people/mochel/doc/papers/ols-2005/mochel.pdf



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Answer: BCDE

Reason:

Virtual directories under the /sys directory hierarchy:

block : Contains subdirectories for block devices
class : Contains subdirectories for every class of device that is registered with the kernel.
firmware : Contains subdirectories for firmware objects.
module : Contains subdirectories for each module loaded into the kernel.