Google PCA Practice Question: Managing and Provisioning a Solution Infrastructure
An organization runs a stateful application on GKE that must not lose data during cluster upgrades or node repairs. The application uses persistent volumes with ReadWriteOnce access mode. The team wants to ensure pods are not evicted simultaneously. Which Kubernetes resource should they configure?
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
✓
PodDisruptionBudget
PodDisruptionBudget (PDB) specifies the minimum number of available pods that must remain up during voluntary disruptions, such as node upgrades.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
PodDisruptionBudget
Why this is correct
A PodDisruptionBudget (PDB) specifies the minimum number or percentage of replicas that must remain available during voluntary disruptions, such as cluster upgrades or node repairs. By setting `maxUnavailable: 0` or `minAvailable: 1`, the PDB prevents the simultaneous eviction of pods using ReadWriteOnce persistent volumes, thereby satisfying the requirement that no data be lost and pods are not evicted concurrently.
- ✗
ClusterAutoscaler
Why it's wrong here
Cluster autoscaler adjusts node count, not pod availability.
- ✗
HorizontalPodAutoscaler
Why it's wrong here
HPA scales pods based on CPU/memory, not disruption handling.
- ✗
VerticalPodAutoscaler
Why it's wrong here
VPA adjusts resource requests, not disruption budgets.
Go deeper
Related to this question
Learn chapter
Google Cloud Resource Hierarchy and Organization
Key term
Data
Data is raw, unprocessed information, like numbers, words, or measurements, that can be stored, processed, and analyzed by computers.
Key term
Anthos
Anthos is a Google Cloud platform that lets you run applications consistently across different computing environments, like on-premises data centers and multiple public clouds.
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