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ACE Practice Question: A Cloud KMS key used to encrypt a Cloud Storage…
This ACE practice question tests your understanding of a cloud kms key used to encrypt a cloud storage…. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 Cloud KMS key used to encrypt a Cloud Storage bucket's data is being destroyed. What happens to the data in the bucket when the KMS key is destroyed?
Answer choices
Why each option matters
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
A
Best answer
The encrypted data becomes permanently inaccessible (cryptographic erasure) since the decryption key no longer exists.
Without the KMS key, the envelope encryption key protecting the data key cannot be unwrapped. The ciphertext in GCS is permanent but unreadable — effective data deletion without physical deletion.
B
Distractor review
The data in Cloud Storage is automatically deleted along with the key.
Destroying a KMS key does not delete the Cloud Storage objects. The objects remain but are permanently unreadable (cryptographic erasure).
C
Distractor review
Cloud Storage automatically re-encrypts the data using Google-managed keys as a fallback.
There is no automatic re-encryption fallback. Cloud Storage cannot re-encrypt data whose key has been destroyed since it cannot read the encrypted data to re-encrypt it.
D
Distractor review
The key enters a 'disabled' state where data can still be decrypted by Google support.
Key disablement (not destruction) temporarily prevents use but allows re-enablement. Key destruction is permanent — even Google cannot recover the key material.
Common exam trap
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Technical deep dive
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- 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.
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.
More questions from this exam
Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.
Question 1
What is the correct order of the Google Cloud resource hierarchy from highest to lowest level?
Question 2
A compliance archive stores legal documents accessed at most once per quarter. Which Cloud Storage class minimizes storage cost while meeting that access pattern?
Question 3
Which gcloud command creates a Compute Engine VM named 'web-01' using the e2-medium machine type in zone us-central1-a?
Question 4
A team wants to receive an email alert when the average CPU utilization of VMs in a managed instance group exceeds 80% for more than 5 minutes. What should they create in Cloud Monitoring?
Question 5
A junior developer needs read-only access to all GCP resources in a project. Which IAM role grants the minimum permissions required?
Question 6
A startup creates its first Google Cloud project. Before deploying any paid resources, what must be linked to the project?
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FAQ
Questions learners often ask
What does this ACE question test?
Read the scenario before looking for a memorised answer.
What is the correct answer to this question?
The correct answer is: The encrypted data becomes permanently inaccessible (cryptographic erasure) since the decryption key no longer exists. — Cloud KMS key destruction is an irreversible process with a mandatory 24-hour scheduled destruction period (the key enters 'scheduled for destruction' state, then is permanently destroyed). Once the key is destroyed, data encrypted with that key version becomes permanently inaccessible — this is called 'cryptographic erasure' or 'crypto-shredding'. The data itself (ciphertext) remains in Cloud Storage but cannot be decrypted. Key destruction is used as a data deletion technique for compliance (GDPR right to erasure).
What should I do if I get this ACE question wrong?
Identify which ACE exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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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.