- A
Use Cloud Pub/Sub notifications to trigger a Cloud Function that moves objects.
Why wrong: While possible, it's more complex and not the standard approach; lifecycle rules are simpler.
- B
Use gsutil rewrite command in a cron job.
Why wrong: Manual scripting is inefficient and error-prone; lifecycle management is automatic.
- C
Configure a lifecycle rule with SetStorageClass to Nearline after 30 days and Delete after 365 days.
Lifecycle rules can automatically transition objects to a different storage class and then delete them based on age.
- D
Set a bucket retention policy with a retention period of 365 days.
Why wrong: Retention policy only prevents deletion; it doesn't transition storage class.
Question 581 of 1,000
PDE Storing the Data Practice Question
This PDE practice question tests your understanding of storing the data. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 data engineer needs to store raw sensor data in Cloud Storage and automatically transition it to a lower-cost storage class after 30 days, then delete it after 365 days. What should they configure?
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
✓
Configure a lifecycle rule with SetStorageClass to Nearline after 30 days and Delete after 365 days.
Option C is correct because Cloud Storage lifecycle management rules allow you to automatically transition objects to a lower-cost storage class (such as Nearline) after a specified number of days and then delete them after another period. This is the native, serverless way to manage object lifecycle without external scripts or compute resources.
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 Cloud Pub/Sub notifications to trigger a Cloud Function that moves objects.
Why it's wrong here
While possible, it's more complex and not the standard approach; lifecycle rules are simpler.
- ✗
Use gsutil rewrite command in a cron job.
Why it's wrong here
Manual scripting is inefficient and error-prone; lifecycle management is automatic.
- ✓
Configure a lifecycle rule with SetStorageClass to Nearline after 30 days and Delete after 365 days.
Why this is correct
Lifecycle rules can automatically transition objects to a different storage class and then delete them based on age.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Set a bucket retention policy with a retention period of 365 days.
Why it's wrong here
Retention policy only prevents deletion; it doesn't transition storage class.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the distinction between lifecycle management (which automates transitions and deletions) and retention policies (which only prevent deletion/overwrites), leading candidates to confuse the two.
Detailed technical explanation
How to think about this question
Lifecycle rules are evaluated asynchronously, typically within 24 hours of the condition being met. The SetStorageClass action changes the storage class of the object by rewriting it in place, which incurs a cost for the rewrite operation. For compliance scenarios, note that lifecycle rules cannot override retention policies or legal holds; objects under a retention policy will not be deleted until the retention period expires.
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.
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.
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FAQ
Questions learners often ask
What does this PDE question test?
Storing the Data — This question tests Storing the Data — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Configure a lifecycle rule with SetStorageClass to Nearline after 30 days and Delete after 365 days. — Option C is correct because Cloud Storage lifecycle management rules allow you to automatically transition objects to a lower-cost storage class (such as Nearline) after a specified number of days and then delete them after another period. This is the native, serverless way to manage object lifecycle without external scripts or compute resources.
What should I do if I get this PDE 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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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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