Red Hat EX342 Dumps (V8.02) Are Available to Help You Test Your Ability: Start with EX342 Free Dumps (Part 1, Q1-Q40) First

1. You accidentally deleted an LVM logical volume.

How can you attempt recovery?

2. You need to identify services that cause slow boot times.

What built-in tool do you use and how?

3. How do you list all encryption slots in a LUKS volume and identify which ones are in use?

4. A logical volume is not mounting due to “unknown filesystem type.” How do you determine the correct type and fix it?

5. During boot, the screen displays “device not found” errors for encrypted LUKS volumes.

How do you troubleshoot and recover access?

6. An LVM volume group fails to activate at boot.

How do you troubleshoot and recover this VG?

7. Your NIC is not functioning because the required module is not autoloaded.

How do you find the matching module and enable it?

8. You want to identify what kernel version your system is running and compare it against the latest available from Red Hat.

What steps will you follow?

9. A module requires a parameter (debug=1) to be set at load time.

How do you set this during boot?

10. An engineer needs to consult Red Hat's official documentation to check kernel tuning parameters.

How do you locate and verify this information online and offline?

11. The boot process fails with a message about a missing initramfs.

How do you regenerate the initramfs image for the default kernel?

12. You are preparing a troubleshooting report.

How can you generate a complete summary of the RHEL system’s hardware, software, network, and log data using one built-in tool?

13. You need to verify the integrity of all RPM packages to detect corruption after a hardware failure.

How do you do this?

14. The system fails to boot and reports a corrupted root file system.

How do you recover it using fsck?

15. You suspect a failing power supply due to spontaneous shutdowns.

How can you confirm using logs or utilities?

16. A BIOS-level time error is causing system time drift and log mismatch.

How do you synchronize system time and configure timekeeping?

17. You need to find all services that failed during the previous boot.

What is the correct method?

18. A misconfigured fstab entry causes the system to hang at boot.

How do you regain access and fix it?

19. You need to regenerate the bootloader configuration.

What steps are required for BIOS and UEFI systems?

20. One of the LVM PVs is missing after a disk replacement.

How do you re-integrate or replace it in the VG?

21. You suspect metadata corruption in your VG.

How do you diagnose and fix this?

22. An LVM volume fails to mount and reports “bad superblock.” How do you recover it using backup superblocks?

23. A system fails to boot into graphical.target and remains in emergency mode. You suspect a service failure is responsible.

How do you identify and fix the failing service?

24. A unit file is failing to start with “Unit not found.” How do you verify its installation and fix the systemd unit path?

25. You need to disable the usb-storage module to prevent USB mass storage devices.

How do you block it from loading?

26. You are asked to load a custom kernel module named mydriver.ko for a hardware device.

How do you load it manually and verify that it's functioning?

27. You want a kernel module (loop) to load automatically at boot.

How do you configure this?

28. The system reports a "kernel panic - not syncing" message.

How do you troubleshoot and recover from this?

29. You removed a service but it still attempts to start at boot.

How do you completely clean up the remnants?

30. The system fails to boot because /etc/fstab refers to a non-existent LVM LV.

How do you correct this?

31. You need to change the crashkernel parameter in the GRUB configuration to enable kdump.

How do you do this safely and persistently?

32. You need to resize an existing LVM volume and its file system.

How do you safely increase the size?

33. A PV shows as “unknown” during pvscan.

How can you recover it?

34. Your system is crashing due to a known buggy kernel module.

How do you unload it temporarily without rebooting?

35. How do you verify if a failed mount unit is causing emergency mode and resolve it?

36. A server fails POST checks with beeping and does not reach the OS loader.

What steps can you take to identify the hardware fault?

37. You want to ensure that a critical service always restarts if it fails after boot.

How can you enforce this?

38. You suspect a recent software update might have introduced a bug.

How can you find all packages updated in the last 7 days and their history?

39. You replaced a failed disk in a RAID array.

How do you check RAID status and re-add the new disk?

40. You want to get detailed information about all currently loaded kernel modules for documentation.

What command do you use and how do you format it?