201.1 Kernel Components (weight: 2) LPIC-2 Practice Questions (Page 4)

Questions 16–20

1. 16foundation · easy

   What is a key characteristic of loadable kernel modules?

   • AThey are permanently compiled into the kernel image.
   • BThey are only used during the boot process and then discarded.
   • CThey run in user space and communicate with the kernel via system calls.
   • DThey can be added or removed from the running kernel without rebooting.
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2. 17application · medium

   An administrator needs to unload a kernel module that is currently in use. The module has a dependency that is also loaded. What is the correct approach?

   • AUnload the dependent module first, then unload the target module.
   • BUnload the target module first, then the dependent module.
   • CReboot the system to clear all modules.
   • DUse rmmod -f to force unload the module.
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4. 18expert · hard

   After a kernel update, a server fails to boot with a kernel panic. The administrator needs to restore the system to a working state quickly. The previous kernel is still installed. What is the fastest and safest recovery action?

   • ASelect the previous kernel from the bootloader menu at boot.
   • BEdit the bootloader configuration to remove the new kernel entry.
   • CReinstall the kernel package from the installation media.
   • DUse a live CD to chroot into the system and remove the new kernel.
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5. 19expert · hard

   An administrator is compiling a custom kernel for a production server. They need to minimize the kernel size and boot time, but also need to support a variety of hardware that may be attached later. Which configuration strategy best balances these requirements?

   • AUse a generic distribution kernel instead of a custom one.
   • BCompile all drivers into the kernel to avoid module loading overhead.
   • CCompile only the drivers for currently attached hardware into the kernel, and build all other drivers as modules.
   • DCompile all drivers as modules and load them all at boot.
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6. 20foundation · easy

   Which of the following best describes the role of the core (or kernel proper) in the Linux kernel architecture?

   • AIt contains the essential kernel services that are always resident in memory.
   • BIt is a compressed archive of device drivers and filesystem support used during early boot.
   • CIt is a separate program that loads and unloads kernel modules on demand.
   • DIt is the set of user-space libraries that provide an interface to kernel services.
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