Chapter 6: Practice Exam

1. B. Current interrupt (IRQ) assignments are contained in the file /proc/interrupts. Therefore, viewing the contents of the file with a command such as cat will work. There is no view command, thus making answer A incorrect. Likewise, there is no /dev/irq file, making answers C and D incorrect.
2. D. Configuration files for udev are found in /etc/udev, which makes answer D correct. The other options do not exist.
3. A. The modprobe command loads the module and its dependencies, if applicable. The lsmod command is used to list currently loaded modules, making answer B incorrect. The insmod command will load a given module but not its dependencies. Answer D, rmmod, is used to remove a module from memory.
4. A. The Shift key, if pressed when control has first been handed to GRUB, will cause the GRUB menu to be displayed.
5. D. The dmesg command displays the contents of the kernel ring buffer. On many Linux distributions, this log is also saved to /var/log/dmesg. The other options...