Linux Sysfs Question: Download Linux Sysfs PDF

Which one of the following is not true?
a) any file of the sysfs can not be edited
b) some files of the sysfs are writable for configuration of devices
c) both (a) and (b)
d) none of the mentioned

b) some files of the sysfs are writable for configuration of devices

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The files of sysfs contains the information about: a) devices and drivers b) memory mapping c) ports d) none of the mentioned	In linux sysfs is always mounted at: a) /sys b) /proc/sys c) /proc/mounts d) none of the mentioned