Linux Sysfs Question: Download Linux Sysfs PDF

In sysfs, each represented bus type has two directories named as:
a) attributes and kobjects
b) devices and drivers
c) devices and kobjects
d) none of the mentioned

b) devices and drivers

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The directory /sys/block contains: a) sub-directories for each block device b) symbolic link for each block device only c) device file for each block device only d) none of the mentioned	A device class describes the ____ type of device. a) physical b) stuctural c) functional d) none of the mentioned