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ACE Practice Question: You need persistent shared file storage for a…
This ACE practice question tests your understanding of you need persistent shared file storage for a…. 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.
You need persistent shared file storage for a legacy application running on multiple Compute Engine VMs that requires POSIX-compliant file system access (NFS). The workload is I/O intensive with files up to 100 GB. Which GCP storage service should you use?
Answer choices
Why each option matters
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
A
Best answer
Cloud Filestore (NFS)
Filestore is a fully managed NFS service with POSIX compliance. Multiple VMs can mount the same Filestore instance simultaneously, providing true shared read/write file access with high performance.
B
Distractor review
Cloud Storage FUSE mounted on each VM
Cloud Storage FUSE provides file-system-like access but is not POSIX-compliant — it doesn't support file locking, accurate directory metadata, or consistent latency required by many legacy applications.
C
Distractor review
Persistent Disk attached in ReadWriteMany mode to all VMs
Standard Persistent Disks are ReadWriteOnce. Multi-writer PDs exist but have significant restrictions (no ext4, Linux filesystem only, limited to 2 VMs). Filestore is the appropriate shared POSIX storage solution.
D
Distractor review
Local SSD on each VM with rsync synchronization between VMs
Local SSDs are VM-local, not shared. rsync synchronization is asynchronous and doesn't provide the consistent shared view of a real NFS mount.
Common exam trap
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Technical deep dive
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- 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.
Related practice questions
Related ACE practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
More questions from this exam
Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.
Question 1
What is the correct order of the Google Cloud resource hierarchy from highest to lowest level?
Question 2
A compliance archive stores legal documents accessed at most once per quarter. Which Cloud Storage class minimizes storage cost while meeting that access pattern?
Question 3
Which gcloud command creates a Compute Engine VM named 'web-01' using the e2-medium machine type in zone us-central1-a?
Question 4
A team wants to receive an email alert when the average CPU utilization of VMs in a managed instance group exceeds 80% for more than 5 minutes. What should they create in Cloud Monitoring?
Question 5
A junior developer needs read-only access to all GCP resources in a project. Which IAM role grants the minimum permissions required?
Question 6
A startup creates its first Google Cloud project. Before deploying any paid resources, what must be linked to the project?
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FAQ
Questions learners often ask
What does this ACE question test?
Read the scenario before looking for a memorised answer.
What is the correct answer to this question?
The correct answer is: Cloud Filestore (NFS) — Cloud Filestore provides managed NFS (Network File System) storage with POSIX compliance, shared access across multiple VMs, and high-performance SSD or HDD tiers. It is purpose-built for use cases requiring shared file system access from multiple Compute Engine instances simultaneously. Cloud Storage does not provide POSIX file system semantics (no true directory structure, no file locking). Persistent Disks can only be mounted ReadWriteMany with limited support (multi-writer PDs are a separate feature).
What should I do if I get this ACE question wrong?
Identify which ACE exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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This ACE practice question is part of Courseiva's free Google Cloud 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 ACE exam.