Question 337 of 1,005

Storage →hardMultiple ChoiceObjective-mapped

CKA Storage Practice Question

This CKA practice question tests your understanding of 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.

A company is migrating a stateful application to Kubernetes. The application requires persistent storage that is 'zone-aware' to survive a single zone failure and must provide the highest possible I/O performance. Which storage solution best meets these requirements?

Clue words in this question

Noticing these words before you look at the options changes how you read each choice.

Clue: "best"
Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.

Question 1hardmultiple choice

Full question →

A
Use a network filesystem (NFS) server running as a single pod with a PersistentVolume backed by a regional Persistent Disk
Why wrong: NFS adds latency and a single point of failure; the underlying storage is regional but the NFS server is not highly available.
B
Create a StorageClass with WaitForFirstConsumer binding and volumeBindingMode: WaitForFirstConsumer
Why wrong: This delays volume binding but does not inherently provide zone resilience or high performance.
C
Use a StorageClass that provisions regional Persistent Disks with replication across two zones
Regional PDs provide zone redundancy and high performance, meeting both requirements.
D
Deploy a StatefulSet with a local SSD on each node and use a DaemonSet to manage replication
Why wrong: Local SSDs are node-specific and do not survive node or zone failures without complex replication.

Full breakdown with real-world context →

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

✓

Use a StorageClass that provisions regional Persistent Disks with replication across two zones

Option C is correct because regional Persistent Disks replicate data synchronously across two zones, providing zone-level fault tolerance while maintaining high I/O performance due to direct block storage access. This meets the requirement for surviving a single zone failure without the overhead of network filesystem protocols or application-level replication.

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.

✗
Use a network filesystem (NFS) server running as a single pod with a PersistentVolume backed by a regional Persistent Disk
Why it's wrong here
NFS adds latency and a single point of failure; the underlying storage is regional but the NFS server is not highly available.
✗
Create a StorageClass with WaitForFirstConsumer binding and volumeBindingMode: WaitForFirstConsumer
Why it's wrong here
This delays volume binding but does not inherently provide zone resilience or high performance.
✓
Use a StorageClass that provisions regional Persistent Disks with replication across two zones
Why this is correct
Regional PDs provide zone redundancy and high performance, meeting both requirements.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Deploy a StatefulSet with a local SSD on each node and use a DaemonSet to manage replication
Why it's wrong here
Local SSDs are node-specific and do not survive node or zone failures without complex replication.

Common exam traps

Common exam trap: answer the scenario, not the keyword

The trap here is that candidates often confuse 'zone-aware' with simply scheduling pods across zones (Option B) or assume that any replicated storage (Option A) meets the requirement, but fail to recognize that only synchronous block-level replication across zones provides both fault tolerance and high I/O performance.

Detailed technical explanation

How to think about this question

Regional Persistent Disks use synchronous replication at the block level across two zones, ensuring data consistency and immediate failover. Under the hood, the Kubernetes CSI driver (e.g., pd.csi.storage.gke.io) provisions the disk with a `replication-type` parameter set to `regional-pd`, and the StorageClass can specify `volumeBindingMode: WaitForFirstConsumer` to ensure the pod is scheduled in one of the two zones before the disk is created. In a real-world scenario, this allows a StatefulSet to survive a zone outage without data loss, whereas NFS or local SSDs would require manual recovery or application-level replication.

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 CKA 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.

Related CKA practice-question pages

Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.

Cluster Architecture, Installation and Configuration practice questions

Practise CKA questions linked to Cluster Architecture, Installation and Configuration.

Services and Networking practice questions

Practise CKA questions linked to Services and Networking.

Workloads and Scheduling practice questions

Practise CKA questions linked to Workloads and Scheduling.

Storage practice questions

Practise CKA questions linked to Storage.

Troubleshooting practice questions

Practise CKA questions linked to Troubleshooting.

Cluster Architecture, Installation & Configuration practice questions

Practise CKA questions linked to Cluster Architecture, Installation & Configuration.

Workloads & Scheduling practice questions

Practise CKA questions linked to Workloads & Scheduling.

Services & Networking practice questions

Practise CKA questions linked to Services & Networking.

CKA fundamentals practice questions

Practise CKA questions linked to CKA fundamentals.

CKA scenario practice questions

Practise CKA questions linked to CKA scenario.

CKA troubleshooting practice questions

Practise CKA questions linked to CKA troubleshooting.

Practice this exam

Start a free CKA practice session

Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.

10 questions 20 questions 30 questions 50 questions Timed 30

CKA practice-test guide →Study guide →Browse all practice tests

FAQ

Questions learners often ask

What does this CKA question test?

Storage — This question tests Storage — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: Use a StorageClass that provisions regional Persistent Disks with replication across two zones — Option C is correct because regional Persistent Disks replicate data synchronously across two zones, providing zone-level fault tolerance while maintaining high I/O performance due to direct block storage access. This meets the requirement for surviving a single zone failure without the overhead of network filesystem protocols or application-level replication.

What should I do if I get this CKA question wrong?

Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

Are there clue words in this question I should notice?

Yes — watch for: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.

What is the key concept behind this question?

Read the scenario before looking for a memorised answer.

About these practice questions

Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →

How Courseiva writes practice questions · Editorial policy

Keep practising

Question Discussion

Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.

Loading comments…

This CKA practice question is part of Courseiva's free CNCF 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 CKA exam.