The answer is the Viewer role, specifically roles/viewer, which is the minimum IAM role for read-only access across all GCP resources in a project. This role grants exactly the permissions needed to view configurations and data—such as resourcemanager.projects.get and storage.objects.list—without allowing any modifications, deletions, or administrative actions. On the Google Associate Cloud Engineer exam, this concept tests your understanding of least-privilege IAM assignments, often appearing in scenarios where a developer or auditor needs visibility without write access. A common trap is choosing roles like Browser or Editor; Browser lacks permissions for many resource-specific reads, while Editor grants full write access, violating the “minimum” requirement. The Viewer role is unique because it applies to both existing and future resources, making it the safest and most efficient choice for read-only needs. Memory tip: think “Viewer = Vision only” — you can see everything, but you cannot touch or change anything.
Google ACE Configuring access and security Practice Question
This ACE practice question tests your understanding of configuring access and security. 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 junior developer needs read-only access to all GCP resources in a project. Which IAM role grants the minimum permissions required?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "minimum / minimize"
Why it matters: Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
Why wrong: Editor includes full read and write permissions on most resources — far more than read-only access.
B
Owner
Why wrong: Owner includes all Editor permissions plus billing account management and IAM policy changes — excessive for read-only access.
C
Viewer
Viewer grants read-only access to all project resources without any modification permissions — the correct minimum role for read-only access.
D
Browser
Why wrong: Browser provides access to browse the project hierarchy and some metadata but does not grant read access to resource data — it's more restricted than Viewer.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Viewer
The Viewer role (roles/viewer) grants read-only access to all GCP resources in a project, including existing and future resources, without allowing any modifications. This is the minimum permissions required for read-only access, as it provides exactly the necessary permissions (e.g., resourcemanager.projects.get, storage.objects.list) without any write or administrative capabilities.
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.
✗
Editor
Why it's wrong here
Editor includes full read and write permissions on most resources — far more than read-only access.
✗
Owner
Why it's wrong here
Owner includes all Editor permissions plus billing account management and IAM policy changes — excessive for read-only access.
✓
Viewer
Why this is correct
Viewer grants read-only access to all project resources without any modification permissions — the correct minimum role for read-only access.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Browser
Why it's wrong here
Browser provides access to browse the project hierarchy and some metadata but does not grant read access to resource data — it's more restricted than Viewer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Google Cloud often tests the distinction between Viewer and Browser, where candidates mistakenly choose Browser thinking it is the minimal read-only role, but Browser only provides access to browse the project listing and not to read actual resource data.
Detailed technical explanation
How to think about this question
Under the hood, the Viewer role is a curated set of permissions that maps to the 'read' verb across all GCP services, such as compute.instances.get, storage.objects.get, and bigquery.tables.get. A real-world scenario where this matters is when an auditor needs to review all resources in a project without risk of accidental changes; granting Viewer ensures they can list and describe resources but cannot modify or delete them. Note that Viewer does not grant the ability to view IAM policies (roles/iam.securityReviewer is needed for that), so for full read-only access including IAM, you would need to combine roles.
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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this ACE question in full detail.
Configuring access and security — This question tests Configuring access and security — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Viewer — The Viewer role (roles/viewer) grants read-only access to all GCP resources in a project, including existing and future resources, without allowing any modifications. This is the minimum permissions required for read-only access, as it provides exactly the necessary permissions (e.g., resourcemanager.projects.get, storage.objects.list) without any write or administrative capabilities.
What should I do if I get this ACE 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: "minimum / minimize". Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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