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25. Guided course · Preview access

    Monitoring concepts and configurations in a Linux system

    • CompTIA Linux+ · XK0-006 · V8
    • Objective 5.1 · Troubleshooting

    Concepts: top · free · iostat · journalctl

    Open lesson →Course details
26. Guided course · Preview access

    Analyze and troubleshoot hardware, storage, and Linux OS issues

    • CompTIA Linux+ · XK0-006 · V8
    • Objective 5.2 · Troubleshooting

    Concepts: Filesystem check · SMART data · Out-of-memory killer · Initramfs rebuild

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27. Guided course · Preview access

    Analyze and troubleshoot networking issues on a Linux system

    • CompTIA Linux+ · XK0-006 · V8
    • Objective 5.3 · Troubleshooting

    Concepts: DNS resolution failure · Routing failure · Firewall rule failure · Service port failure

    Open lesson →Course details
28. Guided course · Preview access

    Analyze and troubleshoot security issues on a Linux system

    • CompTIA Linux+ · XK0-006 · V8
    • Objective 5.4 · Troubleshooting

    Concepts: SELinux denial · Unix permission failure · Expired account · Unpatched vulnerability

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29. Guided course · Preview access

    Analyze and troubleshoot performance issues

    • CompTIA Linux+ · XK0-006 · V8
    • Objective 5.5 · Troubleshooting

    Concepts: Load average · I/O wait · Swap pressure · Thermal throttling

    Open lesson →Course details

Topics and concept names from the seven current certification courses. IT basics and resource-only routes are available separately.