- A
Object Lifecycle Rules
Why wrong: Lifecycle rules can transition storage classes or delete objects based on age, but they do not enforce immutability; objects can still be deleted or overwritten.
- B
Object Lock with Retention Policy
Object Lock sets a retention policy on the bucket, preventing objects from being deleted or overwritten for a specified duration (WORM).
- C
Object Versioning
Why wrong: Versioning preserves previous versions, but objects can still be deleted permanently if versioning is not combined with retention policies.
- D
IAM Conditions
Why wrong: IAM Conditions restrict access based on attributes but do not enforce immutability; authorized users could still delete objects.
Question 738 of 1,000
PDE Storing the Data Practice Question
This PDE practice question tests your understanding of storing the data. 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 data engineer needs to store quarterly financial data that must remain immutable for 7 years to meet regulatory compliance. The data is accessed infrequently after the first year. Which Cloud Storage feature should be used to enforce immutability?
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 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
✓
Object Lock with Retention Policy
Object Lock with a Retention Policy enforces immutability by preventing object deletion or modification for a specified duration. For regulatory compliance requiring 7-year immutable storage, a retention policy configured with a retention period of 7 years ensures that objects cannot be overwritten or deleted, even by the root account. This directly meets the requirement for data that must remain unchanged for the full 7-year period.
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.
- ✗
Object Lifecycle Rules
Why it's wrong here
Lifecycle rules can transition storage classes or delete objects based on age, but they do not enforce immutability; objects can still be deleted or overwritten.
- ✓
Object Lock with Retention Policy
Why this is correct
Object Lock sets a retention policy on the bucket, preventing objects from being deleted or overwritten for a specified duration (WORM).
Clue confirmation
The clue word "first" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Object Versioning
Why it's wrong here
Versioning preserves previous versions, but objects can still be deleted permanently if versioning is not combined with retention policies.
- ✗
IAM Conditions
Why it's wrong here
IAM Conditions restrict access based on attributes but do not enforce immutability; authorized users could still delete objects.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the misconception that Object Versioning alone provides immutability, but versioning only protects against accidental deletion by preserving old versions—it does not prevent intentional deletion or overwriting of the current version, which is required for true immutability.
Detailed technical explanation
How to think about this question
Object Lock uses a WORM (Write Once, Read Many) model, typically implemented via a retention period or legal hold. Under the hood, the retention period is stored as metadata on the object, and the storage system enforces it at the API level—any DELETE or PUT request that would modify or remove the object is rejected with a 403 error until the retention period expires. In Google Cloud Storage, this is enforced through bucket-level retention policies that apply to all objects, ensuring compliance with regulations like SEC Rule 17a-4 or FINRA.
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.
- →
Storing the Data — study guide chapter
Learn the concepts, then practise the questions
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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: Object Lock with Retention Policy — Object Lock with a Retention Policy enforces immutability by preventing object deletion or modification for a specified duration. For regulatory compliance requiring 7-year immutable storage, a retention policy configured with a retention period of 7 years ensures that objects cannot be overwritten or deleted, even by the root account. This directly meets the requirement for data that must remain unchanged for the full 7-year period.
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.
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.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
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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