EX342 Practice Exam

You will be able to

• Diagnose and repair 23 realistic faults on two machines inside four hours, covering all EX342 objective areas.
• Prove each repair with a measurable check, and keep every change persistent across a reboot.
• Use the marking sheet to find weak areas and return to the matching skill.

Lessons

1. 01Exam briefing, lab and marking sheetRules, the two-machine lab and its disks, how the faults are prepared, the task map with dependencies, and the sheet you mark yourself on.lab-check.shvirsh snapshot-revertlsblkfindmnt --verifysystemctl is-activeman -k0/2 exercises
2. 02Part A: Boot, storage and evidence (100 points)Eight tasks: emergency mode, boot arguments, kdump, web console and sos, a lost root password, damaged file systems, LVM and space.journalctlgrubbykdumpctlcockpitsos reportrd.break0/8 exercises
3. 03Part B: Software and applications (100 points)Eight tasks: a damaged package, a broken repository, signatures and rollback, a crash, a service that will not start, limits, strace, and one Ansible playbook.rpm -Vdnfrpm -Kcoredumpctlgdbsystemctl cat0/8 exercises
4. 04Part C: Network, security and logging (100 points)Seven tasks: a network path with four faults, a web service, central logging, AIDE, account policy, five users who cannot log in, and a PAM repair.ip route getgetentcurlnmclifirewall-cmdsemanage0/7 exercises