Google PCA Practice Question: Analyze and optimize technical and business processes
This PCA practice question tests your understanding of analyze and optimize technical and business processes. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 stores backup data in Cloud Storage. They observe high egress costs when clients download backups. Additionally, they must retain backups for 7 years for compliance. Which optimization should they implement first?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "first"
Why it matters: Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Enable requester pays on the bucket
High egress costs occur when clients download backups, and enabling requester pays shifts these costs to the clients. This directly addresses the cost issue without changing storage class or retention. Requester pays is the first optimization because it resolves the immediate cost problem while lifecycle rules or storage class changes address separate concerns like retention or storage cost.
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 lifecycle rules to transition to Archive after 30 days and delete after 7 years
Why it's wrong here
This addresses retention but not egress cost.
✓
Enable requester pays on the bucket
Why this is correct
Requester pays shifts the egress cost to the client, solving the high egress issue.
Clue confirmation
The clue word "first" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Set up a Cloud CDN for backup downloads
Why it's wrong here
CDN is designed for frequently accessed content, not backups, and may not reduce egress cost significantly.
✗
Move the backup data to Archive storage class
Why it's wrong here
This reduces storage cost but does not affect egress charges.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Google Cloud often tests the misconception that changing storage class (e.g., to Archive) reduces egress costs, when in fact egress costs are independent of storage class and requester pays is the direct solution for shifting download costs.
Detailed technical explanation
How to think about this question
Requester pays works by setting the `requesterPays` flag on a bucket, which forces the requester to include their billing project in requests (via the `userProject` parameter in the REST API or `-o GSUtil:requester_pays=on` in gsutil). This shifts network egress costs to the client, but the bucket owner still pays for storage; it is ideal for shared datasets where clients are known and can be billed. Note that anonymous access is not allowed when requester pays is enabled, so clients must authenticate with a valid Google Cloud project.
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 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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this PCA question in full detail.
Analyze and optimize technical and business processes — This question tests Analyze and optimize technical and business processes — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Enable requester pays on the bucket — High egress costs occur when clients download backups, and enabling requester pays shifts these costs to the clients. This directly addresses the cost issue without changing storage class or retention. Requester pays is the first optimization because it resolves the immediate cost problem while lifecycle rules or storage class changes address separate concerns like retention or storage cost.
What should I do if I get this PCA question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
Yes — watch for: "first". Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
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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