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CV0-004 Migrating a legacy application to the cloud Practice Question
A company is migrating a legacy application to the cloud. The application requires low-latency access to a shared filesystem that must be accessible from multiple virtual machines simultaneously. Which storage solution should the cloud architect recommend?
⚠ Common exam trap
Many exam-takers confuse object storage's high durability and accessibility with the low-latency, shared filesystem capabilities of block storage, overlooking that object storage lacks the block-level locking and POSIX compliance needed for concurrent VM access.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Block storage
Block storage (C) is correct because it provides a shared filesystem that can be mounted by multiple virtual machines simultaneously with low-latency access. Services like Amazon EBS with multi-attach or Azure Managed Disks support concurrent read/write operations from multiple instances, meeting the legacy application's requirement for a shared, low-latency filesystem.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Cold archive storage
Why it's wrong here
Cold archive storage is for long-term backup, not active filesystem use.
- ✗
Local instance store
Why it's wrong here
Local instance store is ephemeral and tied to a single VM, cannot be shared.
- ✓
Block storage
Why this is correct
Block storage can be attached to multiple VMs using a cluster filesystem, providing shared low-latency access.
- ✗
Object storage
Why it's wrong here
Object storage is not suitable for shared filesystem use cases; it provides HTTP-based access and lacks filesystem semantics.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CV0-004 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the CV0-004 exam.