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.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Anyone authenticated with a Google account can list and read objects
The IAM policy grants the `roles/storage.objectViewer` role to `allAuthenticatedUsers`, which includes any identity authenticated with a Google account (including non-GCP accounts). The condition `resource.name.startsWith('projects/_/buckets/example-bucket/objects/public/')` restricts the grant to objects whose path starts with `public/`, so only those objects can be listed and read. This is why option A is correct.
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.
✓
Anyone authenticated with a Google account can list and read objects
Why this is correct
'allAuthenticatedUsers' includes all authenticated Google users.
Related concept
Read the scenario before looking for a memorised answer.
✗
No access is granted because the condition is missing
Why it's wrong here
The policy is valid; conditions are optional.
✗
Only users in the same GCP project can read objects
Why it's wrong here
No project restriction is specified.
✗
Anyone on the internet can list and read objects
Why it's wrong here
That would require 'allUsers', not 'allAuthenticatedUsers'.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Google Cloud often tests the distinction between `allUsers` (anyone on the internet, no authentication) and `allAuthenticatedUsers` (requires Google authentication), and candidates frequently confuse the two, thinking `allAuthenticatedUsers` means 'anyone' or 'same project only'.
Detailed technical explanation
How to think about this question
The `allAuthenticatedUsers` principal is a special identifier that matches any principal authenticated with a Google identity, including consumer Gmail accounts, Google Workspace accounts, and service accounts. The `resource.name.startsWith` condition uses the IAM condition language to filter access based on the object's path within the bucket, which is evaluated at request time. This pattern is commonly used to expose a public/ prefix for authenticated users while keeping other objects private.
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: Anyone authenticated with a Google account can list and read objects — The IAM policy grants the `roles/storage.objectViewer` role to `allAuthenticatedUsers`, which includes any identity authenticated with a Google account (including non-GCP accounts). The condition `resource.name.startsWith('projects/_/buckets/example-bucket/objects/public/')` restricts the grant to objects whose path starts with `public/`, so only those objects can be listed and read. This is why option A is correct.
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.
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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