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Google Professional Cloud Security Engineer Exam - Topic 4 Question 111 Discussion

Actual exam question for Google's Professional Cloud Security Engineer exam
Question #: 111
Topic #: 4
[All Professional Cloud Security Engineer Questions]

You need to enable VPC Service Controls and allow changes to perimeters in existing environments without preventing access to resources. Which VPC Service Controls mode should you use?

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Suggested Answer: D

In dry run mode, requests that violate the perimeter policy are not denied, only logged. Dry run mode is used to test perimeter configuration and to monitor usage of services without preventing access to resources. https://cloud.google.com/vpc-service-controls/docs/dry-run-mode

by Kanisha at Jan 05, 2026, 05:16 AM

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Ashlyn
3 days ago
B) Native mode, all the way! Why complicate things when you can just use the default settings?
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Tiffiny
8 days ago
C) Enforced mode seems like the safest bet. Better to lock it down and have control than risk any mishaps.
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Shelba
13 days ago
D) Dry run sounds like the way to go. Gotta test those changes before going live, right?
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Queenie
18 days ago
I practiced a similar question, and I think "Dry run" was mentioned as a way to simulate changes without impacting access.
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Cammy
23 days ago
I feel like "Native" could be relevant, but I can't recall the specifics on how it differs from the other options.
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Larae
28 days ago
I'm not entirely sure, but I remember something about "Enforced" being strict and possibly blocking access, which we don't want.
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Galen
1 month ago
I think the "Dry run" mode might be the right choice since it allows testing without enforcing changes.
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Annmarie
1 month ago
I feel pretty confident that the answer is D, Dry run. That mode allows you to test changes to perimeters without actually enforcing them, which seems like the best approach to meet the requirements given in the question.
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Geraldine
1 month ago
The question is asking about the VPC Service Controls mode, not Cloud Run. I'm pretty sure the answer is not A. I'll have to carefully consider the differences between the other options to decide which one is correct.
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Karima
2 months ago
Okay, so we need to enable VPC Service Controls and make changes to perimeters without disrupting access to resources. I'm leaning towards option B, Native, since that sounds like it would allow the necessary flexibility.
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Lynette
2 months ago
Hmm, I'm a bit confused on the difference between the VPC Service Controls modes. I'll need to review the details of each one to determine which one best fits the requirements given in the question.
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Bernadine
2 months ago
I think the key here is to enable VPC Service Controls in a way that allows changes to perimeters without blocking access to resources. Based on that, I'd guess the answer is option D, Dry run.
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