Question 535 of 1,000
mediumDrag & DropObjective-mapped

Cloud Storage Uniform Bucket-Level Access for Public Read

This ACE practice question tests your understanding of ace exam topics. 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.

Order the steps to set up a Cloud Storage bucket with uniform bucket-level access and make objects publicly readable.

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

1. Create bucket with uniform bucket-level access enabled. 2. Upload objects to the bucket. 3. Set IAM policy granting storage.objectViewer to allUsers.

Uniform access must be set at bucket creation; after upload, permissions apply to all objects.

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.

  • 1. Create bucket with uniform bucket-level access enabled. 2. Upload objects to the bucket. 3. Set IAM policy granting storage.objectViewer to allUsers.

    Why this is correct

    This order is correct because uniform bucket-level access must be enabled at bucket creation to ensure all objects inherit the IAM policy. After uploading objects, setting the IAM policy makes them publicly readable without configuring ACLs per object.

    Related concept

    Standard ACLs match source addresses.

  • 1. Create bucket with uniform bucket-level access enabled. 2. Set IAM policy granting storage.objectViewer to allUsers. 3. Upload objects to the bucket.

    Why it's wrong here

    This order is incorrect because setting the IAM policy before uploading objects is valid but less common; however, the typical and recommended sequence is to upload first to test access. More importantly, if the bucket is created without uniform access, this order could lead to inconsistencies.

  • 1. Create bucket without uniform bucket-level access. 2. Upload objects to the bucket. 3. Enable uniform bucket-level access. 4. Set IAM policy granting storage.objectViewer to allUsers.

    Why it's wrong here

    This order is incorrect because enabling uniform bucket-level access after upload will remove any existing object ACLs, potentially breaking access before the IAM policy is set. It is more efficient to enable uniform access at creation.

  • 1. Create bucket with uniform bucket-level access enabled. 2. Upload objects to the bucket. 3. Set object ACLs to make objects publicly readable.

    Why it's wrong here

    This order is incorrect because using object ACLs defeats the purpose of uniform bucket-level access. Objects should rely on the bucket-level IAM policy, not individual ACLs.

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.

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.

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.

Related practice questions

Related ACE practice-question pages

Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.

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FAQ

Questions learners often ask

What does this ACE question test?

Standard ACLs match source addresses.

What is the correct answer to this question?

The correct answer is: 1. Create bucket with uniform bucket-level access enabled. 2. Upload objects to the bucket. 3. Set IAM policy granting storage.objectViewer to allUsers. — Uniform access must be set at bucket creation; after upload, permissions apply to all objects.

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.

What is the key concept behind this question?

Standard ACLs match source addresses.

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Last reviewed: Jun 11, 2026

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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.