Linux Sysfs Question:

In sysfs every subsystem has:
a) a shared attribute structure
b) its own attribute structure
c) both (a) and (b)
d) none of the mentioned

b) its own attribute structure

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Which one of the following is a notification to user space from the kernel that something has changed in the system's configuration? a) hotplug event b) module event c) attach event d) none of the mentioned	Sysfs internally stores the pointer to the ____ that implements the directory in the file system. a) kobjects b) kstructures c) kinodes d) none of the mentioned