Manage a solution that can span multiple database technologies →mediumMultiple ChoiceObjective-mapped
PCDE Practice Question: Manage a solution that can span multiple database technologies
An e-commerce platform uses Cloud Bigtable for session data. They need to ensure that if one zone fails, the data is still available with eventual consistency. What 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
✓
Enable Bigtable replication across zones within the same region
Bigtable replication across zones provides high availability with eventual consistency (async replication). This meets the requirement of surviving a zone failure.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Enable Bigtable replication across zones within the same region
Why this is correct
Replication provides async eventual consistency and failover if a zone goes down.
- ✗
Create a Cloud Bigtable cluster with multiple nodes
Why it's wrong here
Multiple nodes within one cluster still reside in one zone; no zone redundancy.
- ✗
Export Bigtable tables to Cloud Storage periodically
Why it's wrong here
Export is for backup, not high availability.
- ✗
Use Cloud Bigtable HDD storage for durability
Why it's wrong here
Storage type does not provide zone failover.
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