- A
GKE alerts the team and waits for manual intervention
Why wrong: Auto-repair is automatic — it doesn't wait for manual intervention. GKE repairs the node on its own schedule after the health threshold is exceeded.
- B
GKE drains the node, recreates it, and rejoins it to the cluster automatically
GKE auto-repair drains the unhealthy node (evicting Pods while respecting PDBs), recreates it from the node pool configuration, and reconnects it to the cluster.
- C
GKE terminates the node permanently and adds a replacement from the node pool's minimum size
Why wrong: Auto-repair recreates the node (same pool, same configuration) rather than permanently terminating it outside the pool's count.
- D
GKE migrates all Pods to other nodes but leaves the unresponsive node running
Why wrong: Auto-repair fully repairs the node — Pods are evicted and rescheduled, but the node is also recreated and rejoined, not left in an unresponsive state indefinitely.
Quick Answer
The correct action is that GKE drains the node, recreates it, and rejoins it to the cluster automatically. This occurs because GKE’s auto-repair feature performs periodic health checks on each node; when a node remains in a ‘NotReady’ state for the default timeout of 10 minutes, the system initiates a repair workflow that gracefully evicts pods (draining), rebuilds the node from the node pool’s instance template, and reattaches it to the cluster. On the Google Associate Cloud Engineer exam, this scenario tests your understanding of node lifecycle management and the distinction between auto-repair and auto-upgrade—a common trap is assuming manual intervention is required or that the node is simply deleted. Remember the three-step sequence: drain, recreate, rejoin. A useful memory tip is “DRR” (Drain, Recreate, Rejoin) to recall the automatic repair process for an unresponsive node.
Google ACE Practice Question: Ensuring successful operation of a cloud solution
This ACE practice question tests your understanding of ensuring successful operation of a cloud solution. 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 GKE node pool has auto-repair enabled. A node becomes unresponsive (not ready) for 10 minutes. What action does GKE's auto-repair feature take?
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
GKE drains the node, recreates it, and rejoins it to the cluster automatically
B is correct because GKE's auto-repair feature periodically performs health checks on nodes. When a node is in a 'NotReady' state for the default timeout of 10 minutes, GKE automatically initiates a repair: it drains the node (evicting pods gracefully), recreates it from the node pool's instance template, and rejoins it to the cluster. This ensures minimal disruption without requiring manual intervention.
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.
- ✗
GKE alerts the team and waits for manual intervention
Why it's wrong here
Auto-repair is automatic — it doesn't wait for manual intervention. GKE repairs the node on its own schedule after the health threshold is exceeded.
- ✓
GKE drains the node, recreates it, and rejoins it to the cluster automatically
Why this is correct
GKE auto-repair drains the unhealthy node (evicting Pods while respecting PDBs), recreates it from the node pool configuration, and reconnects it to the cluster.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
GKE terminates the node permanently and adds a replacement from the node pool's minimum size
Why it's wrong here
Auto-repair recreates the node (same pool, same configuration) rather than permanently terminating it outside the pool's count.
- ✗
GKE migrates all Pods to other nodes but leaves the unresponsive node running
Why it's wrong here
Auto-repair fully repairs the node — Pods are evicted and rescheduled, but the node is also recreated and rejoined, not left in an unresponsive state indefinitely.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse auto-repair with auto-scaling or manual node recovery, assuming the node is permanently deleted or that the cluster waits for human action, when in fact GKE's auto-repair is a fully automated, non-destructive replacement process that preserves node identity.
Detailed technical explanation
How to think about this question
Under the hood, GKE's Node Auto-Repair uses the node's lease renewal mechanism (via the node controller's NodeLifecycleController) to detect 'NotReady' status. The default timeout is 10 minutes, but this can be adjusted via the '--node-repair-timeout' flag. In a real-world scenario, if a node experiences a transient kernel panic or disk pressure, auto-repair will drain pods, recreate the node from the same instance template, and rejoin it—preserving the node's original name and labels, which is critical for stateful workloads using PersistentVolumeClaims.
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 cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
What to study next
Got this wrong? Here's your next step.
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FAQ
Questions learners often ask
What does this ACE question test?
Ensuring successful operation of a cloud solution — This question tests Ensuring successful operation of a cloud solution — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: GKE drains the node, recreates it, and rejoins it to the cluster automatically — B is correct because GKE's auto-repair feature periodically performs health checks on nodes. When a node is in a 'NotReady' state for the default timeout of 10 minutes, GKE automatically initiates a repair: it drains the node (evicting pods gracefully), recreates it from the node pool's instance template, and rejoins it to the cluster. This ensures minimal disruption without requiring manual intervention.
What should I do if I get this ACE 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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Last reviewed: Jun 11, 2026
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