- A
Grant authorized users the roles/cloudkms.cryptoKeyEncrypterDecrypter role.
Users need this role to use the key for encryption.
- B
Grant all users the roles/cloudkms.cryptoKeyEncrypterDecrypter role.
Why wrong: That would allow anyone to use the key, defeating restriction.
- C
Create a bucket IAM policy that denies storage.objects.create without the encryption header matching the CMEK key.
This enforces that objects must be encrypted with the specific key.
- D
Enable Uniform Bucket-Level Access.
Why wrong: Uniform access controls ACLs but isn't required for CMEK enforcement.
- E
Create a Cloud KMS key and set it as the default key on the bucket using --kms-key.
This sets the bucket to use CMEK.
Question 226 of 1,000
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 security team wants to restrict access to a Cloud Storage bucket so that only objects encrypted with a specific CMEK key can be uploaded. Which three actions are needed? (Choose 3)
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
✓
Grant authorized users the roles/cloudkms.cryptoKeyEncrypterDecrypter role.
Setting the CMEK key on the bucket, creating a bucket-level policy denying uploads without the key, and granting the encrypt/decrypt role to users are required.
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.
- ✓
Grant authorized users the roles/cloudkms.cryptoKeyEncrypterDecrypter role.
Why this is correct
Users need this role to use the key for encryption.
Related concept
Standard ACLs match source addresses.
- ✗
Grant all users the roles/cloudkms.cryptoKeyEncrypterDecrypter role.
Why it's wrong here
That would allow anyone to use the key, defeating restriction.
- ✓
Create a bucket IAM policy that denies storage.objects.create without the encryption header matching the CMEK key.
Why this is correct
This enforces that objects must be encrypted with the specific key.
Related concept
Standard ACLs match source addresses.
- ✗
Enable Uniform Bucket-Level Access.
Why it's wrong here
Uniform access controls ACLs but isn't required for CMEK enforcement.
- ✓
Create a Cloud KMS key and set it as the default key on the bucket using --kms-key.
Why this is correct
This sets the bucket to use CMEK.
Related concept
Standard ACLs match source addresses.
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.
- →
Configuring Access and Security — study guide chapter
Learn the concepts, then practise the questions
- →
Configuring Access and Security practice questions
Targeted practice on this topic area only
- →
All ACE questions
1,000 questions across all exam domains
- →
Google Associate Cloud Engineer study guide
Full concept coverage aligned to exam objectives
- →
ACE practice test guide
How to use practice tests most effectively before exam day
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.
Configuring Access and Security practice questions
Practise ACE questions linked to Configuring Access and Security.
Planning and Configuring a Cloud Solution practice questions
Practise ACE questions linked to Planning and Configuring a Cloud Solution.
Ensuring Successful Operation of a Cloud Solution practice questions
Practise ACE questions linked to Ensuring Successful Operation of a Cloud Solution.
Deploying and Implementing a Cloud Solution practice questions
Practise ACE questions linked to Deploying and Implementing a Cloud Solution.
Setting Up a Cloud Solution Environment practice questions
Practise ACE questions linked to Setting Up a Cloud Solution Environment.
ACE fundamentals practice questions
Practise ACE questions linked to ACE fundamentals.
ACE scenario practice questions
Practise ACE questions linked to ACE scenario.
ACE troubleshooting practice questions
Practise ACE questions linked to ACE troubleshooting.
Practice this exam
Start a free ACE practice session
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Questions learners often ask
What does this ACE question test?
Configuring Access and Security — This question tests Configuring Access and Security — Standard ACLs match source addresses..
What is the correct answer to this question?
The correct answer is: Grant authorized users the roles/cloudkms.cryptoKeyEncrypterDecrypter role. — Setting the CMEK key on the bucket, creating a bucket-level policy denying uploads without the key, and granting the encrypt/decrypt role to users are required.
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.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
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.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.