easyMultiple ChoiceObjective-mapped
PCSE Practice Question: A company must implement data residency…
A company must implement data residency requirements that prohibit storing data outside the European Union. They are using Cloud Bigtable and need to ensure that backups are also stored within the EU. Which configuration should they choose?
⚠ Common exam trap
Google Cloud often tests the misconception that multi-region or dual-region configurations are acceptable for data residency, but the trap here is that any replication across regions (even within the EU) can violate strict data residency if the requirement prohibits storing data outside a specific geographic boundary, and backups must be explicitly confined to the same region.
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
✓
Create the Bigtable instance in a single EU region (e.g., europe-west1) and enable automatic backups.
A single-region Bigtable instance in an EU region (e.g., europe-west1) ensures that all data, including backups, remains within the EU. Enabling automatic backups stores backup data in the same region, satisfying data residency requirements that prohibit storing data outside the EU.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Create the Bigtable instance with multi-region placement in europe-west1 and europe-west4.
Why it's wrong here
Multi-region placement includes multiple regions, but some may be outside the EU? Actually europe-west1 and europe-west4 are both in EU, but multi-region is not recommended for strict residency; single region is safer.
- ✗
Create an instance in a dual-region configuration (e.g., europe-west1 and europe-west4) and use backup policies.
Why it's wrong here
Dual-region is not a supported placement option for Bigtable; only single-region or multi-region are available.
- ✗
Use a single-region instance in europe-west1 with customer-managed encryption keys (CMEK) for backups.
Why it's wrong here
CMEK does not affect data residency; backups are still stored in the same region.
- ✓
Create the Bigtable instance in a single EU region (e.g., europe-west1) and enable automatic backups.
Why this is correct
Backups are stored in the same region as the instance, ensuring data stays in the EU.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This PCSE practice question is part of Courseiva's free Google Cloud 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 PCSE exam.