SG0-001 · Question #345
In logical volume management, which of the following is the HIGHEST level of abstraction?
The correct answer is A. Volume Group. In Logical Volume Management (LVM), the Volume Group represents the highest level of abstraction, acting as a pool for managing underlying physical storage and carving out logical volumes.
Question
In logical volume management, which of the following is the HIGHEST level of abstraction?
Options
- AVolume Group
- BPhysical Disk Drives
- CPhysical Volume
- DLogical Volume
How the community answered
(20 responses)- A90% (18)
- B5% (1)
- C5% (1)
Why each option
In Logical Volume Management (LVM), the Volume Group represents the highest level of abstraction, acting as a pool for managing underlying physical storage and carving out logical volumes.
A Volume Group (VG) is a collection of one or more Physical Volumes (PVs), which are raw disk partitions or whole disks. The VG provides a pool of storage from which Logical Volumes (LVs) are carved out, representing the top-level organizational unit in LVM.
Physical Disk Drives are the lowest level, representing the raw hardware, not an abstraction within LVM.
A Physical Volume (PV) is an abstraction of a physical disk or partition, but it's aggregated into a Volume Group, making it a lower level than the VG.
A Logical Volume (LV) is an abstraction created from a Volume Group and presented to the operating system, but the VG itself is a higher-level container for LVs.
Concept tested: LVM hierarchy and abstraction levels
Source: https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/9/html/configuring_and_managing_logical_volumes/getting-started-with-lvm_configuring-and-managing-logical-volumes
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