This EX200 practice question tests your understanding of configure local storage. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which TWO of the following are valid reasons to use LVM in a Red Hat Enterprise Linux environment?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Ability to resize logical volumes without repartitioning
Option B is correct because LVM allows you to resize logical volumes (LVs) online or offline without needing to repartition the underlying disk, which is a key advantage over traditional partitions. Option C is correct because LVM provides snapshot functionality, which creates a point-in-time copy of a logical volume for consistent backups or testing, without requiring additional backup software.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Improved disk I/O performance over direct partitions
Why it's wrong here
LVM adds overhead; performance is not improved.
✓
Ability to resize logical volumes without repartitioning
Why this is correct
LVM allows online resizing of logical volumes, which is a major advantage.
Related concept
Read the scenario before looking for a memorised answer.
✓
Support for snapshots for backup purposes
Why this is correct
LVM provides thin and thick snapshot capabilities for consistent backups.
Related concept
Read the scenario before looking for a memorised answer.
✗
Simplification of disk partitioning by removing the need for partitions
Why it's wrong here
LVM still requires partitions or whole disks as physical volumes; partitions are still needed.
✗
Ability to create RAID arrays without mdadm
Why it's wrong here
LVM can provide RAID-like functionality (e.g., mirroring) but mdadm is separate; LVM is not a replacement.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse LVM's flexibility features (like resizing and snapshots) with performance improvements or RAID capabilities, leading them to select options A or E, which are not inherent LVM benefits.
Detailed technical explanation
How to think about this question
LVM uses a three-layer architecture: Physical Volumes (PVs), Volume Groups (VGs), and Logical Volumes (LVs). The ability to resize LVs relies on the kernel device-mapper, which can remap extents without touching the underlying partition table, and the `lvextend` and `lvreduce` commands handle this. Snapshots in LVM use copy-on-write (CoW) technology, where only changed blocks are stored in the snapshot, making them space-efficient but requiring careful monitoring of snapshot size to avoid invalidation.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the EX200 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Configure local storage — This question tests Configure local storage — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Ability to resize logical volumes without repartitioning — Option B is correct because LVM allows you to resize logical volumes (LVs) online or offline without needing to repartition the underlying disk, which is a key advantage over traditional partitions. Option C is correct because LVM provides snapshot functionality, which creates a point-in-time copy of a logical volume for consistent backups or testing, without requiring additional backup software.
What should I do if I get this EX200 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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