XK0-005 Question #109: Real Exam Question with Answer & Explanation

Question

A Linux administrator opens a ticket to have an external hard drive mounted. As a security policy, external storage kernel modules are disabled. Which of the following is the BEST command for adding the proper kernel module to enable external storage modules?

Options

• Armmod /lib/modules/3.6.12-100-generic/kernel/drivers/usb/storage/usb- storage.ko
• Bmodinfo /lib/modules/3.6.12-100-generic/kernel/drivers/usb/storage/usb- storage.ko
• Cdepmod /lib/modules/3.6.12-100-generic/kernel/drivers/usb/storage/usb- storage.ko
• Dinsmod /lib/modules/3.6.12-100-generic/kernel/drivers/usb/storage/usb- storage.ko

Explanation

To enable external storage modules after they have been disabled, the insmod command is used to manually insert the specific kernel module responsible for USB storage.

Common mistakes.

• A. rmmod (remove module) is used to unload a kernel module from the kernel, which is the opposite of what is needed to enable external storage.
• B. modinfo displays information about a kernel module, such as its description, author, and dependencies, but it does not load or unload the module.
• C. depmod is used to generate a list of module dependencies and map files, which helps modprobe load modules efficiently, but it does not load modules itself.

Concept tested. Linux kernel module management (insmod)

Reference. https://man7.org/linux/manpages/man8/insmod.8.html

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