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201.3 - Kernel runtime management and troubleshooting

Weight: 4

Description: Candidates should be able to manage and/or query a 2.6.x, 3.x or 4.x kernel and its loadable modules. Candidates should be able to identify and correct comm-on boot and run time issues. Candidates should understand device detection and management using udev. This objective includes troubleshooting udev rules.

Key Knowledge Areas:

  • Use command-line utilities to get information about the currently running kernel and kernel modules
  • Manually load and unload kernel modules
  • Determine when modules can be unloaded
  • Determine what parameters a module accepts
  • Configure the system to load modules by names other than their file name.
  • /proc filesystem
  • Content of /, /boot/ , and /lib/modules/
  • Tools and utilities to analyze information about the available hardware
  • udev rules

Terms and Utilities:

  • /lib/modules/kernel-version/modules.dep
  • module configuration files in /etc/
  • /proc/sys/kernel/
  • /sbin/depmod
  • /sbin/rmmod
  • /sbin/modinfo
  • /bin/dmesg
  • /sbin/lspci
  • /usr/bin/lsdev
  • /sbin/lsmod
  • /sbin/modprobe
  • /sbin/insmod
  • /bin/uname
  • /usr/bin/lsusb
  • /etc/sysctl.conf, /etc/sysctl.d/
  • /sbin/sysctl
  • udevmonitor
  • udevadm monitor
  • /etc/udev/

Piste : • 202.3 - Alternate Bootloaders • 201.2 - Compiling a kernel • 200.1 - Measure and Troubleshoot Resource Usage • 202.2 - System Recovery • 205.3 - Troubleshooting Network Issues • 205.1 - Basic networking configuration • 203.2 - Maintaining a Linux filesystem​ • 204.2 - Adjusting Storage Device Access • 201.1 - Kernel Components • 201.3 - Kernel runtime management and troubleshooting

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