LX0-103 · Question #2
What can the Logical Volume Manager (LVM) be used for? (Choose THREE correct answers.)
The correct answer is B. To dynamically change the size of logical volumes. D. To create snapshots. E. To dynamically create or delete logical volumes.. LVM supports dynamic resizing of logical volumes, snapshot creation, and dynamic creation or deletion of logical volumes. It does not natively provide RAID 9 (which does not exist) or built-in encryption.
Question
What can the Logical Volume Manager (LVM) be used for? (Choose THREE correct answers.)
Options
- ATo create RAID 9 arrays.
- BTo dynamically change the size of logical volumes.
- CTo encrypt logical volumes.
- DTo create snapshots.
- ETo dynamically create or delete logical volumes.
How the community answered
(25 responses)- A8% (2)
- B88% (22)
- C4% (1)
Why each option
LVM supports dynamic resizing of logical volumes, snapshot creation, and dynamic creation or deletion of logical volumes. It does not natively provide RAID 9 (which does not exist) or built-in encryption.
RAID 9 is not a defined RAID level - it does not exist, so LVM cannot create it.
LVM allows online resizing of logical volumes using `lvresize` or `lvextend`/`lvreduce`, enabling administrators to grow or shrink volumes without unmounting in many cases.
LVM does not natively encrypt logical volumes; encryption is handled by a separate layer such as LUKS using `dm-crypt`.
LVM supports copy-on-write snapshots via `lvcreate -s`, allowing point-in-time copies of a logical volume for backups or testing.
Logical volumes can be dynamically created with `lvcreate` and deleted with `lvremove` without requiring system downtime or repartitioning the underlying disk.
Concept tested: LVM capabilities - resize, snapshots, dynamic volumes
Source: https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/9/html/configuring_and_managing_logical_volumes/index
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