CompTIA · Linux+ XK0-006
Boot, kernel, and devices
Linux+ XK0-006 · Lesson 2 of 28 · 10:37
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In this lesson
Prepare for the Linux+ XK0-006 exam (CompTIA Linux+ V8). In this lesson: the boot process from UEFI or BIOS to systemd, GRUB 2 and kernel parameters, kernel modules (lsmod, modprobe, depmod), the initrd and dracut, PXE network boot, hardware tools (lspci, lsusb, lshw, dmidecode), embedded systems, and GPUs, with Pinecrest Media, a fictional video streaming company, as the running example. Includes three original practice questions.
Preview the topics
- An administrator added a kernel parameter to /etc/default/grub on a Rocky Linux server and rebooted, but /proc/cmdline does not show it. What step was missed?
- The encoding server’s root disk now sits behind the new storage controller, and the server stops at boot: it cannot find the root filesystem. The driver package is installed. What should the administrator do?
- A Pinecrest encoding job runs slowly, and the team suspects that it uses the processors instead of the GPU. Which tool shows the load and memory of each GPU, with the processes that use it?