- A
Enable VPC connector and set ingress to internal to avoid public internet exposure.
VPC connector allows the function to send traffic only via internal IPs, reducing exposure.
- B
Disable all inbound network traffic to the function.
Why wrong: Cloud Functions must accept HTTP triggers; you cannot disable ingress completely.
- C
Enable Cloud KMS customer-managed encryption for the function's environment variables.
Why wrong: Cloud Functions do not directly encrypt environment variables with CMEK; use Secret Manager instead.
- D
Use the default Compute Engine default service account for simplicity.
Why wrong: The default service account has excessive permissions and should be replaced with a custom least-privilege service account.
- E
Store secrets in Secret Manager and reference them from the function without hardcoding.
Secret Manager encrypts secrets at rest and minimizes exposure.
Google PCA Design for security and compliance Practice Question
This PCA practice question tests your understanding of design for security and compliance. 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.
Which TWO security best practices should be applied when configuring Cloud Functions that process sensitive data? (Choose two.)
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"best"Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
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
Enable VPC connector and set ingress to internal to avoid public internet exposure.
Options B and D are correct. Using internal traffic only (via VPC connector) ensures data does not traverse the public internet. Encrypting environment variables with CMEK protects sensitive configuration. Option A is wrong because the default service account often has excessive permissions; use a least-privilege identity. Option C is wrong because disabling ingress is not possible; you control egress. Option E is wrong because Cloud Functions support CMEK for environment variables, but not automatically; you must use Secret Manager.
Key principle: Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Enable VPC connector and set ingress to internal to avoid public internet exposure.
Why this is correct
VPC connector allows the function to send traffic only via internal IPs, reducing exposure.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Authentication checks who the user is.
- ✗
Disable all inbound network traffic to the function.
Why it's wrong here
Cloud Functions must accept HTTP triggers; you cannot disable ingress completely.
- ✗
Enable Cloud KMS customer-managed encryption for the function's environment variables.
Why it's wrong here
Cloud Functions do not directly encrypt environment variables with CMEK; use Secret Manager instead.
- ✗
Use the default Compute Engine default service account for simplicity.
Why it's wrong here
The default service account has excessive permissions and should be replaced with a custom least-privilege service account.
- ✓
Store secrets in Secret Manager and reference them from the function without hardcoding.
Why this is correct
Secret Manager encrypts secrets at rest and minimizes exposure.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Authentication checks who the user is.
Common exam traps
Common exam trap: authentication is not authorization
Logging in proves the user can authenticate. It does not automatically mean the user is allowed to enter privileged or configuration mode. Watch for AAA authorization, privilege level and command authorization details.
Detailed technical explanation
How to think about this question
This kind of question is testing the difference between identity and permission. A user may successfully log in to a router because authentication is working, but still fail to enter configuration mode because authorization is missing, misconfigured or mapped to a lower privilege level.
KKey Concepts to Remember
- Authentication checks who the user is.
- Authorization controls what the user is allowed to do after login.
- Privilege levels affect access to EXEC and configuration commands.
- AAA, TACACS+ and RADIUS can separate login success from command access.
TExam Day Tips
- Do not assume successful login means full administrative access.
- Look for words such as cannot enter configuration mode, privilege level, authorization or command access.
- Separate login problems from permission problems before choosing the answer.
Key takeaway
Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
Real-world example
How this comes up in practice
A company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
What to study next
Got this wrong? Here's your next step.
Review Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related PCA questions on access control and AAA configuration.
- →
Design for security and compliance — study guide chapter
Learn the concepts, then practise the questions
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Design for security and compliance practice questions
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FAQ
Questions learners often ask
What does this PCA question test?
Design for security and compliance — This question tests Design for security and compliance — Authentication checks who the user is..
What is the correct answer to this question?
The correct answer is: Enable VPC connector and set ingress to internal to avoid public internet exposure. — Options B and D are correct. Using internal traffic only (via VPC connector) ensures data does not traverse the public internet. Encrypting environment variables with CMEK protects sensitive configuration. Option A is wrong because the default service account often has excessive permissions; use a least-privilege identity. Option C is wrong because disabling ingress is not possible; you control egress. Option E is wrong because Cloud Functions support CMEK for environment variables, but not automatically; you must use Secret Manager.
What should I do if I get this PCA question wrong?
Review Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related PCA questions on access control and AAA configuration.
Are there clue words in this question I should notice?
Yes — watch for: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
What is the key concept behind this question?
Authentication checks who the user is.
About these practice questions
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Last reviewed: Jun 24, 2026
This PCA 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 PCA exam.
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