Linux Sysfs Questions & Answers – 2

This set of Linux / Unix questions and answers focuses on sysfs. This is set 2.

1. The directories of /sys directory
a) are created at system startup when the subsystems register themselves with kobject 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
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2. 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
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3. 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
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4. A device class describes the ____ type of device.
a) physical
b) stuctural
c) functional
d) none of the mentioned
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5. Which one of the following directory contains every physical device that has been discovered by the bus types registered with the kernel?
a) /sys/devices
b) /sys/bus/devices
c) /devices
d) none of the mentioned
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6. Which type of devices are peripheral devices?
a) platform devices
b) system devices
c) both system and platform devices
d) none of the mentioned
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7. Which one of the following is not a system device?
a) CPU
b) APIC
c) Timer
d) None of the mentioned
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8. Which one of the following is not a platform specific code?
a) x86 BIOS
b) EFI on ia64
c) both x86 BIOS and EFI on ia64
d) none of the mentioned
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9. In device driver model bus_type object contains the
a) name of the bus type
b) set of kobjects of the drivers
c) set of kobjects of the devices
d) all of the mentioned
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10. The file fs/sysfs/sysfs.h contains the
a) internal header files for sysfs
b) function definitions will not shared locally among the sysfs source
c) all of the mentioned
d) none of the mentioned
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