Question No : 1
An iSCSI target login fails due to CHAP authentication errors.
How do you fix and reattempt the login?
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Question No : 2
Your system fails to connect to an iSCSI target at boot.
How do you verify and fix the iSCSI session?
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Question No : 3
You must back up data from a LUKS-encrypted device without mounting it.
How do you do a sector-level backup?
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Question No : 4
The system fails to unlock a LUKS partition on boot.
How do you debug the problem?
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Question No : 5
How do you list all encryption slots in a LUKS volume and identify which ones are in use?
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Question No : 6
You want to change the passphrase of a LUKS-encrypted partition.
How do you do this safely?
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Question No : 7
Your encrypted home partition won’t mount.
How do you verify its integrity and fix it?
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Question No : 8
You’ve lost the LUKS passphrase but have a backup key file.
How do you unlock the volume using it?
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Question No : 9
You need to recover the header of a damaged LUKS volume from a backup.
How can you restore the LUKS header safely?
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Question No : 10
An encrypted LUKS volume no longer auto-mounts at boot.
How do you manually decrypt and mount it for data recovery?
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Question No : 11
How do you clone an LVM-based system to another disk for recovery or backup purposes?
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Question No : 12
A PV shows as “unknown” during pvscan.
How can you recover it?
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Question No : 13
You’re unable to extend an LV due to missing free PE.
How do you add another PV and extend the LV?
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Question No : 14
A VG reports “partial mode” after one PV was removed.
How do you correct this?
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Question No : 15
You’ve restored a VG from backup but missing one LV.
How can you try to recover it?
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