- A
Use BigQuery Omni cross-cloud join with the query processed in AWS region
BigQuery Omni processes the join on the AWS side, pulling only the required rows from GCP, minimizing data movement.
- B
Create a materialized view in BigQuery that includes the AWS data
Why wrong: Materialized views cannot span across cloud providers.
- C
Copy the AWS data into BigQuery storage using a scheduled transfer, then join
Why wrong: Copying 10 TB frequently incurs storage and transfer costs.
- D
Use a federated query from BigQuery to read the AWS data directly and join in BigQuery
Why wrong: Federated query would read the entire AWS dataset each time, causing high network costs.
Question 525 of 1,000
PDE Preparing and Using Data for Analysis Practice Question
This PDE practice question tests your understanding of preparing and using data for analysis. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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 company uses BigQuery Omni to query data stored in AWS S3. They need to join this data with data in BigQuery (GCP). The dataset in AWS is large (10 TB) and frequently updated. Which approach minimizes data movement and cost?
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
✓
Use BigQuery Omni cross-cloud join with the query processed in AWS region
BigQuery Omni supports cross-cloud joins by running the query on the cloud where the data resides, using the cross-cloud join feature to pull only the necessary rows from the other cloud.
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.
- ✓
Use BigQuery Omni cross-cloud join with the query processed in AWS region
Why this is correct
BigQuery Omni processes the join on the AWS side, pulling only the required rows from GCP, minimizing data movement.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Create a materialized view in BigQuery that includes the AWS data
Why it's wrong here
Materialized views cannot span across cloud providers.
- ✗
Copy the AWS data into BigQuery storage using a scheduled transfer, then join
Why it's wrong here
Copying 10 TB frequently incurs storage and transfer costs.
- ✗
Use a federated query from BigQuery to read the AWS data directly and join in BigQuery
Why it's wrong here
Federated query would read the entire AWS dataset each time, causing high network costs.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- 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 startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.
Quick reference
AWS S3 Storage Class Comparison
| Storage Class | Min Duration | Retrieval | Use Case |
|---|---|---|---|
| S3 Standard | None | Immediate | Frequently accessed data |
| S3 Standard-IA | 30 days | Immediate | Infrequent access, rapid retrieval |
| S3 One Zone-IA | 30 days | Immediate | Non-critical infrequent data |
| S3 Intelligent-Tiering | None | Immediate–hours | Unknown or changing access patterns |
| S3 Glacier Instant | 90 days | Milliseconds | Archive with instant retrieval |
| S3 Glacier Flexible | 90 days | Minutes–hours | Archive, flexible retrieval |
| S3 Glacier Deep Archive | 180 days | Hours | Long-term compliance archive |
What to study next
Got this wrong? Here's your next step.
Identify which PDE exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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Preparing and Using Data for Analysis — study guide chapter
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FAQ
Questions learners often ask
What does this PDE question test?
Preparing and Using Data for Analysis — This question tests Preparing and Using Data for Analysis — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use BigQuery Omni cross-cloud join with the query processed in AWS region — BigQuery Omni supports cross-cloud joins by running the query on the cloud where the data resides, using the cross-cloud join feature to pull only the necessary rows from the other cloud.
What should I do if I get this PDE question wrong?
Identify which PDE exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
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Last reviewed: Jul 4, 2026
This PDE 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 PDE exam.
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