Google PCA Manage implementation of cloud architecture Practice Question
This PCA practice question tests your understanding of manage implementation of cloud architecture. 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.
A company wants to deploy a containerized application on Google Cloud and needs persistent storage that can be accessed by multiple pods in a GKE cluster concurrently. Which storage solution should they use?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Filestore
Filestore is the correct choice because it provides a managed NFS file server that supports the ReadWriteMany (RWX) access mode, allowing multiple pods in a GKE cluster to concurrently read from and write to the same persistent storage volume. This is essential for workloads like content management systems or shared data processing that require simultaneous access from multiple pods.
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.
✗
Persistent Disk with ReadWriteMany access mode
Why it's wrong here
Persistent Disk only supports ReadWriteOnce; not shared across pods.
✗
Cloud Storage via Storage FUSE
Why it's wrong here
Possible but not designed for high-performance concurrent access; more for object storage.
✗
Compute Engine persistent disk attached to each node
Why it's wrong here
Attaching to node doesn't provide shared access; each pod on the same node could use hostPath but not multi-node.
✓
Filestore
Why this is correct
Filestore provides a managed NFS server that supports concurrent read/write from multiple pods.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse Persistent Disk's ReadWriteOnce capability with ReadWriteMany, or incorrectly assume that Cloud Storage FUSE provides the same concurrent POSIX access as a true shared filesystem like NFS.
Detailed technical explanation
How to think about this question
Filestore instances use the Network File System (NFS) protocol, typically NFSv3, to export a shared filesystem that can be mounted by multiple GKE pods across different nodes simultaneously. Under the hood, Filestore leverages Google's internal distributed file system architecture to provide consistent performance and high availability, with throughput scaling based on the chosen tier (e.g., Basic HDD, Basic SSD, High Scale SSD). In a real-world scenario, a stateful application like a WordPress deployment with multiple replicas would use Filestore to share uploaded media files, avoiding data duplication and ensuring all pods serve the same content.
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 media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this PCA question in full detail.
Manage implementation of cloud architecture — This question tests Manage implementation of cloud architecture — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Filestore — Filestore is the correct choice because it provides a managed NFS file server that supports the ReadWriteMany (RWX) access mode, allowing multiple pods in a GKE cluster to concurrently read from and write to the same persistent storage volume. This is essential for workloads like content management systems or shared data processing that require simultaneous access from multiple pods.
What should I do if I get this PCA 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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