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Question 474 of 1,000

Design for security and compliance →easyMultiple ChoiceObjective-mapped

Google PCA Design for security and compliance Practice Question

This PCA practice question tests your understanding of design for security and compliance. 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 data scientist needs read-only access to a Cloud Storage bucket containing training data. What is the least privileged IAM role to grant at the bucket level?

Clue words in this question

Noticing these words before you look at the options changes how you read each choice.

Clue: "least"
Why it matters: You want the option with minimum overhead, fewest steps, or lowest impact — not the most feature-rich or comprehensive answer.

A
roles/storage.objectAdmin
Why wrong: ObjectAdmin provides full control over objects, too permissive.
B
roles/storage.objectCreator
Why wrong: ObjectCreator allows creation but not read.
C
roles/storage.admin
Why wrong: Storage admin includes full management, too permissive.
D
roles/storage.objectViewer
ObjectViewer grants read-only access to objects.

Full breakdown with real-world context →

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

✓

roles/storage.objectViewer

Option D is correct because roles/storage.objectViewer grants read-only access to objects in a Cloud Storage bucket without allowing any write or administrative actions. This is the least privileged role that satisfies the requirement for read-only access to training data at the bucket level, as it only permits storage.objects.get and storage.objects.list permissions.

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.

✗
roles/storage.objectAdmin
Why it's wrong here
ObjectAdmin provides full control over objects, too permissive.
✗
roles/storage.objectCreator
Why it's wrong here
ObjectCreator allows creation but not read.
✗
roles/storage.admin
Why it's wrong here
Storage admin includes full management, too permissive.
✓
roles/storage.objectViewer
Why this is correct
ObjectViewer grants read-only access to objects.
Clue confirmation
The clue word "least" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.

Common exam traps

Common exam trap: answer the scenario, not the keyword

The trap here is that candidates often confuse roles/storage.objectViewer with roles/storage.objectAdmin or roles/storage.admin, mistakenly thinking broader roles are needed for read access, or they incorrectly assume roles/storage.objectCreator provides read capabilities.

Detailed technical explanation

How to think about this question

Under the hood, IAM roles in Google Cloud are collections of permissions; roles/storage.objectViewer includes storage.objects.get and storage.objects.list, which are sufficient for reading object data and listing bucket contents. A subtle behavior is that this role does not grant access to bucket metadata (e.g., bucket IAM policies or lifecycle rules), so if the data scientist needs to view bucket-level settings, a different role would be required. In a real-world scenario, using this role for training data ensures that the data scientist cannot accidentally delete or modify the dataset, maintaining data integrity.

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.

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FAQ

Questions learners often ask

What does this PCA question test?

Design for security and compliance — This question tests Design for security and compliance — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: roles/storage.objectViewer — Option D is correct because roles/storage.objectViewer grants read-only access to objects in a Cloud Storage bucket without allowing any write or administrative actions. This is the least privileged role that satisfies the requirement for read-only access to training data at the bucket level, as it only permits storage.objects.get and storage.objects.list permissions.

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: "least". You want the option with minimum overhead, fewest steps, or lowest impact — not the most feature-rich or comprehensive answer.

What is the key concept behind this question?

Read the scenario before looking for a memorised answer.

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This PCA 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 PCA exam.