The answer is that the PV's claimRef still points to the old PVC UID and is in Released state. This is the most likely reason a PVC gets stuck in Pending after a node failure in GKE because when a node fails, the original PersistentVolume remains bound to the old PVC’s UID via its claimRef, even after the pod is rescheduled. The PV enters a Released state, meaning it cannot automatically rebind to the new PVC created for the replacement pod, leaving the new PVC in Pending until an administrator manually edits the PV to remove the stale claimRef. On the Google Professional Cloud Developer exam, this scenario tests your understanding of how Kubernetes volume lifecycle and binding mechanics interact with node failures—a common trap is assuming the reclaim policy alone (Retain or Delete) resolves the issue, but the real blocker is the orphaned claimRef. Remember the memory tip: “Released PVs are like locked doors—the claimRef is the old key that no longer fits.”
PCD Deploying applications Practice Question
This PCD practice question tests your understanding of deploying applications. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 deploys a stateful application on GKE using a StatefulSet with PersistentVolumeClaims (PVCs). After a node failure, the pod is rescheduled to another node but the PVC remains in 'Pending' state. What is the most likely reason?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The PV's claimRef still points to the old PVC UID and is in Released state.
Option D is correct because the PersistentVolume (PV) is in 'Released' state and cannot be reused without manual intervention. Option A is wrong because the PVC is not bound to a PV. Option B is wrong because pod rescheduling does not delete PV. Option C is wrong because reclaim policy can be Retain or Delete.
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.
✗
The PVC is bound to a PV that is still attached to the failed node.
Why it's wrong here
PV attachment is not the issue.
✗
The StorageClass has reclaimPolicy: Delete so the PV was deleted.
Why it's wrong here
If Delete, PV would be gone, not pending.
✓
The PV's claimRef still points to the old PVC UID and is in Released state.
Why this is correct
By default, PV has retain policy; claimRef must be removed to reuse.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
The StatefulSet's pod management policy prevents reattachment.
Why it's wrong here
Pod management policy does not affect PV binding.
Common exam traps
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.
Detailed technical explanation
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.
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.
What to study next
Got this wrong? Here's your next step.
Identify which PCD 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.
Deploying applications — This question tests Deploying applications — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The PV's claimRef still points to the old PVC UID and is in Released state. — Option D is correct because the PersistentVolume (PV) is in 'Released' state and cannot be reused without manual intervention. Option A is wrong because the PVC is not bound to a PV. Option B is wrong because pod rescheduling does not delete PV. Option C is wrong because reclaim policy can be Retain or Delete.
What should I do if I get this PCD question wrong?
Identify which PCD 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.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
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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