PCSE Supporting compliance requirements Practice Question
This PCSE practice question tests your understanding of supporting compliance requirements. 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 multinational corporation must comply with GDPR and requires that data stored in BigQuery is physically located in the European Union. They have set up BigQuery datasets in the EU region. However, a compliance audit reveals that some queries may process data in the US region due to BigQuery's multi-region behavior. What should the organization do to ensure data remains in the EU?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Create BigQuery datasets in a specific European region (e.g., europe-west1) instead of the EU multi-region.
Option A is correct because creating a BigQuery dataset in a specific European region (e.g., europe-west1) ensures that all data storage and query processing are physically confined to that single region. In contrast, the EU multi-region (EU) is a geographic entity that includes multiple Google Cloud regions within the European Union, and BigQuery may process data in any of those regions, including potentially outside the EU if the multi-region expands. By using a specific regional dataset, the organization guarantees that data never leaves the designated European location, meeting GDPR's data residency requirements.
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.
✓
Create BigQuery datasets in a specific European region (e.g., europe-west1) instead of the EU multi-region.
Why this is correct
Single-region datasets keep data and processing within that region.
Related concept
Read the scenario before looking for a memorised answer.
✗
Use the EU multi-region dataset and configure VPC Service Controls to restrict access.
Why it's wrong here
VPC Service Controls control access but not data processing location.
✗
Enable BigQuery CMEK with keys stored in a European Cloud KMS key ring.
Why it's wrong here
CMEK ensures encryption within a region but does not restrict processing location.
✗
Use BigQuery reservations to guarantee that data processing happens in the EU.
Why it's wrong here
Reservations affect performance and cost, not data location.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Google Cloud often tests the misconception that VPC Service Controls or encryption keys can enforce data residency, but the trap here is that only choosing a specific regional dataset (not a multi-region) physically restricts data processing to a single location.
Detailed technical explanation
How to think about this question
BigQuery's multi-region (e.g., EU) is a logical grouping of regions (e.g., europe-west1, europe-west4) where data may be stored and processed across any of those regions for redundancy and performance. When a query runs on a multi-region dataset, BigQuery's scheduler may choose to process data in any region within that multi-region, potentially moving data between regions. By using a single-region dataset (e.g., europe-west1), BigQuery guarantees that all storage and compute are confined to that specific zone, which is critical for compliance with strict data localization laws like GDPR.
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 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 exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Supporting compliance requirements — This question tests Supporting compliance requirements — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Create BigQuery datasets in a specific European region (e.g., europe-west1) instead of the EU multi-region. — Option A is correct because creating a BigQuery dataset in a specific European region (e.g., europe-west1) ensures that all data storage and query processing are physically confined to that single region. In contrast, the EU multi-region (EU) is a geographic entity that includes multiple Google Cloud regions within the European Union, and BigQuery may process data in any of those regions, including potentially outside the EU if the multi-region expands. By using a specific regional dataset, the organization guarantees that data never leaves the designated European location, meeting GDPR's data residency requirements.
What should I do if I get this PCSE 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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Question Discussion
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