Linux Sysfs Question: Download Linux Sysfs PDF

What is sysfs?
a) it is a virtual filesystem
b) users use it to get the information about the running kernel
c) it is used for exporting kernel objects.
d) all of the mentioned

d) all of the mentioned

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sysfs is based on: a) rootfs b) ramfs c) initramfs d) none of the mentioned	The directories of /sys directory: a) are created at system startup when the subsystems register themselves with object core b) are created when any device is connects with the system c) are created at the time of kernel compilation d) none of the mentioned