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. 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 company stores large amounts of data in Cloud Storage and wants to reduce costs. Which two actions should they take? (Choose two.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Enable object versioning and configure lifecycle rules to delete noncurrent versions after 90 days.
Option B is correct because enabling object versioning and configuring lifecycle rules to delete noncurrent versions after 90 days directly reduces storage costs by automatically removing older object versions that are no longer needed. Option D is correct because transitioning objects to Nearline or Coldline storage classes after 30 days leverages lower-cost storage tiers for infrequently accessed data, aligning cost with access patterns.
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.
✗
Disable object versioning to prevent multiple versions.
Why it's wrong here
May reduce cost if versioning is not needed, but not a general recommendation as it removes data protection.
✓
Enable object versioning and configure lifecycle rules to delete noncurrent versions after 90 days.
Why this is correct
Removes outdated versions, saving storage.
Related concept
Read the scenario before looking for a memorised answer.
✗
Add bucket labels to track cost by department.
Why it's wrong here
Labels help track but don't reduce cost.
✓
Configure lifecycle management to transition objects to Nearline or Coldline storage classes after 30 days.
Why this is correct
Reduces storage cost for data accessed infrequently.
Related concept
Read the scenario before looking for a memorised answer.
✗
Change the default storage class to Standard for all buckets.
Why it's wrong here
Standard is more expensive.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Google Cloud often tests the distinction between cost allocation (labels) and direct cost reduction (lifecycle rules), leading candidates to mistakenly choose labeling as a cost-saving measure.
Detailed technical explanation
How to think about this question
Lifecycle management in Cloud Storage uses rules based on object age or creation date to transition objects between storage classes (e.g., Standard to Nearline after 30 days) or delete them. Nearline has a 30-day minimum storage duration, so transitioning after 30 days avoids early deletion fees. Object versioning creates noncurrent versions that are billed separately; lifecycle rules can target these with conditions like `age` or `daysSinceNoncurrentTime` to delete them after a specified period, directly reducing costs for overwritten or deleted objects.
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 object versioning and configure lifecycle rules to delete noncurrent versions after 90 days. — Option B is correct because enabling object versioning and configuring lifecycle rules to delete noncurrent versions after 90 days directly reduces storage costs by automatically removing older object versions that are no longer needed. Option D is correct because transitioning objects to Nearline or Coldline storage classes after 30 days leverages lower-cost storage tiers for infrequently accessed data, aligning cost with access patterns.
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.
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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