- A
Add the analytics project to the service perimeter
The managed instance group's project must be within the perimeter to access BigQuery.
- B
Configure Cloud Armor to allow the on-premises IP
Why wrong: Cloud Armor is for load balancers, not for BigQuery access.
- C
Create an egress rule to allow Cloud Storage access from the perimeter
To export data to Cloud Storage, an egress rule permitting Cloud Storage is required.
- D
Create an ingress rule to allow the service account of the managed instance group
Why wrong: While possible, the VPC of the analytics project would need to be allowed; an ingress rule from the VPC source is typical. However, adding the project to the perimeter already allows it. An ingress rule might still be needed, but the scenario requires three choices. This is a distractor.
- E
Add the on-premises IP range to an access level and create an ingress rule
An ingress rule using an IP-based access level allows the on-premises IP to access BigQuery.
PCSE Configuring Network Security Practice Question
This PCSE practice question tests your understanding of configuring network security. 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 security engineer is designing a VPC Service Controls perimeter to protect sensitive BigQuery data. They need to allow a specific on-premises application (source IP range 203.0.113.0/24) to query BigQuery, and also allow a managed instance group in another project (project 'analytics') to export data from BigQuery to Cloud Storage. Which THREE configurations are required? (Choose three.)
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
Add the analytics project to the service perimeter
To allow on-premises access, an ingress rule with the source IP range is needed. To allow the managed instance group in another project, that project must be added to the perimeter (as a project within the perimeter) and an ingress rule for the service account or VPC of that project must be created. Also, the managed instance group will need an egress rule to allow access to Cloud Storage from within the perimeter. So ingress rule for on-premises, adding the analytics project to the perimeter, and an egress rule for Cloud Storage are required.
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.
- ✓
Add the analytics project to the service perimeter
Why this is correct
The managed instance group's project must be within the perimeter to access BigQuery.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Configure Cloud Armor to allow the on-premises IP
Why it's wrong here
Cloud Armor is for load balancers, not for BigQuery access.
- ✓
Create an egress rule to allow Cloud Storage access from the perimeter
Why this is correct
To export data to Cloud Storage, an egress rule permitting Cloud Storage is required.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Create an ingress rule to allow the service account of the managed instance group
Why it's wrong here
While possible, the VPC of the analytics project would need to be allowed; an ingress rule from the VPC source is typical. However, adding the project to the perimeter already allows it. An ingress rule might still be needed, but the scenario requires three choices. This is a distractor.
- ✓
Add the on-premises IP range to an access level and create an ingress rule
Why this is correct
An ingress rule using an IP-based access level allows the on-premises IP to access BigQuery.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
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.
Trap categories for this question
Scenario analysis trap
While possible, the VPC of the analytics project would need to be allowed; an ingress rule from the VPC source is typical. However, adding the project to the perimeter already allows it. An ingress rule might still be needed, but the scenario requires three choices. This is a distractor.
Detailed technical explanation
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.
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 PCSE 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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FAQ
Questions learners often ask
What does this PCSE question test?
Configuring Network Security — This question tests Configuring Network Security — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Add the analytics project to the service perimeter — To allow on-premises access, an ingress rule with the source IP range is needed. To allow the managed instance group in another project, that project must be added to the perimeter (as a project within the perimeter) and an ingress rule for the service account or VPC of that project must be created. Also, the managed instance group will need an egress rule to allow access to Cloud Storage from within the perimeter. So ingress rule for on-premises, adding the analytics project to the perimeter, and an egress rule for Cloud Storage are required.
What should I do if I get this PCSE question wrong?
Identify which PCSE 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.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
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Last reviewed: Jul 4, 2026
This PCSE 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 PCSE exam.
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