The answer is to set the bucket's `requireTls` transport security setting to `true` in the bucket's IAM policy. This configuration enforces that all requests to the Cloud Storage bucket must use TLS 1.2 or higher, directly controlling encryption of data in transit by denying any HTTP request that does not meet that protocol requirement. On the Google Professional Cloud Security Engineer exam, this scenario tests your understanding of bucket-level policy conditions versus broader organization policies—a common trap is confusing `requireTls` with a VPC Service Controls perimeter or a Cloud KMS key rotation setting. Remember that `requireTls` is a boolean condition applied directly to the bucket’s IAM policy, not a separate network or encryption key configuration. A useful memory tip: think “TLS on the bucket, not the network” to recall that this setting lives in the bucket’s IAM policy, not in a firewall rule or KMS key.
PCSE Ensuring data protection Practice Question
This PCSE practice question tests your understanding of ensuring data protection. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 company stores sensitive customer data in Cloud Storage and uses CMEK with Cloud KMS. They want to ensure that data in transit to the storage bucket is always encrypted using TLS 1.2 or higher. Which configuration should they implement?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "always"
Why it matters: Absolute qualifier. An answer using 'always' is only correct if there are genuinely no exceptions — absolute statements are often wrong in networking.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Set the bucket's 'requireTls' transport security setting to 'true' in the bucket's IAM policy.
Option B is correct because setting the bucket's 'requireTls' transport security setting to 'true' in the bucket's IAM policy enforces that all requests to the bucket must use TLS 1.2 or higher. This is a bucket-level policy condition that directly controls the encryption of data in transit, ensuring that any HTTP request without TLS 1.2+ is denied.
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.
✗
Use Cloud Armor to enforce HTTPS with a TLS 1.2 minimum.
Why it's wrong here
Cloud Armor cannot enforce TLS on Cloud Storage requests.
✓
Set the bucket's 'requireTls' transport security setting to 'true' in the bucket's IAM policy.
Why this is correct
This enforces TLS 1.2+ for all requests to the bucket.
Clue confirmation
The clue word "always" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Configure the bucket to use CMEK with a key from Cloud HSM.
Common exam trap: answer the scenario, not the keyword
Google Cloud often tests the distinction between data-at-rest encryption (CMEK, CSEK) and data-in-transit encryption (TLS), leading candidates to incorrectly choose CMEK or HSM options when the question explicitly asks about transit security.
Detailed technical explanation
How to think about this question
The 'requireTls' setting is implemented as a boolean condition in the bucket's IAM policy using the 'storage.googleapis.com/requireTls' condition key. When set to 'true', it rejects any request that does not use TLS 1.2 or higher, effectively blocking HTTP or older TLS versions. This is enforced at the Google Cloud Storage frontend, before any data is processed, providing a strong guarantee for data in transit encryption.
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.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Ensuring data protection — This question tests Ensuring data protection — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Set the bucket's 'requireTls' transport security setting to 'true' in the bucket's IAM policy. — Option B is correct because setting the bucket's 'requireTls' transport security setting to 'true' in the bucket's IAM policy enforces that all requests to the bucket must use TLS 1.2 or higher. This is a bucket-level policy condition that directly controls the encryption of data in transit, ensuring that any HTTP request without TLS 1.2+ is denied.
What should I do if I get this PCSE question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
Yes — watch for: "always". Absolute qualifier. An answer using 'always' is only correct if there are genuinely no exceptions — absolute statements are often wrong in networking.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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