- A
gsutil iam ch allUsers:objectViewer gs://my-bucket
Correct. This grants allUsers the objectViewer role (read access).
- B
gsutil acl ch -u AllUsers:R gs://my-bucket
Why wrong: acl ch is outdated; also AllUsers is not a valid user. The correct syntax is 'allUsers'.
- C
gcloud storage buckets add-iam-policy-binding my-bucket --member allUsers --role roles/storage.objectViewer
Why wrong: The bucket name should include gs://, and the command is 'gcloud storage buckets add-iam-policy-binding' but the syntax is slightly off; gcloud storage uses 'buckets add-iam-policy-binding' but requires the bucket path.
- D
gsutil iam set public-read gs://my-bucket
Why wrong: There is no 'public-read' predefined role; use iam ch.
Question 744 of 1,000
Google ACE Deploying and Implementing a Cloud Solution Practice Question
This ACE practice question tests your understanding of deploying and implementing a cloud solution. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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 developer needs to make a Cloud Storage bucket publicly readable for all users. Which command should be used to set the appropriate IAM binding?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"which command"Why it matters: Tests specific CLI syntax. Recall the exact command and its required context — near-synonyms and partial matches are common distractors.
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
✓
gsutil iam ch allUsers:objectViewer gs://my-bucket
The 'gsutil iam ch' command with 'allUsers' as the member and 'objectViewer' as the role grants public read access. Alternatively, 'gsutil acl ch' can be used, but modern best practice uses IAM.
Key principle: ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
gsutil iam ch allUsers:objectViewer gs://my-bucket
Why this is correct
Correct. This grants allUsers the objectViewer role (read access).
Clue confirmation
The clue word "which command" in the question point toward this answer.
Related concept
Standard ACLs match source addresses.
- ✗
gsutil acl ch -u AllUsers:R gs://my-bucket
Why it's wrong here
acl ch is outdated; also AllUsers is not a valid user. The correct syntax is 'allUsers'.
- ✗
gcloud storage buckets add-iam-policy-binding my-bucket --member allUsers --role roles/storage.objectViewer
Why it's wrong here
The bucket name should include gs://, and the command is 'gcloud storage buckets add-iam-policy-binding' but the syntax is slightly off; gcloud storage uses 'buckets add-iam-policy-binding' but requires the bucket path.
- ✗
gsutil iam set public-read gs://my-bucket
Why it's wrong here
There is no 'public-read' predefined role; use iam ch.
Common exam traps
Common exam trap: ACLs stop at the first match
ACLs are processed top to bottom. The first matching entry wins, and an implicit deny usually exists at the end.
Trap categories for this question
Command / output trap
The bucket name should include gs://, and the command is 'gcloud storage buckets add-iam-policy-binding' but the syntax is slightly off; gcloud storage uses 'buckets add-iam-policy-binding' but requires the bucket path.
Detailed technical explanation
How to think about this question
ACL questions test precision: source, destination, protocol, port and direction. A generally correct ACL can still fail if it is applied on the wrong interface or in the wrong direction.
KKey Concepts to Remember
- Standard ACLs match source addresses.
- Extended ACLs can match source, destination, protocol and ports.
- The first matching ACL entry is used.
- There is usually an implicit deny at the end.
TExam Day Tips
- Check inbound versus outbound direction.
- Read the ACL from top to bottom.
- Look for a broader permit or deny above the intended line.
Key takeaway
ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
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.
Visual reference
What to study next
Got this wrong? Here's your next step.
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related ACE ACL questions on filtering logic and placement.
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FAQ
Questions learners often ask
What does this ACE question test?
Deploying and Implementing a Cloud Solution — This question tests Deploying and Implementing a Cloud Solution — Standard ACLs match source addresses..
What is the correct answer to this question?
The correct answer is: gsutil iam ch allUsers:objectViewer gs://my-bucket — The 'gsutil iam ch' command with 'allUsers' as the member and 'objectViewer' as the role grants public read access. Alternatively, 'gsutil acl ch' can be used, but modern best practice uses IAM.
What should I do if I get this ACE question wrong?
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related ACE ACL questions on filtering logic and placement.
Are there clue words in this question I should notice?
Yes — watch for: "which command". Tests specific CLI syntax. Recall the exact command and its required context — near-synonyms and partial matches are common distractors.
What is the key concept behind this question?
Standard ACLs match source addresses.
About these practice questions
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Last reviewed: Jul 4, 2026
This ACE 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 ACE exam.
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