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Google PCA Design and plan a cloud solution architecture Practice Question
Drag and drop the steps to set up a VPC network peering between two projects in Google Cloud into the correct order.
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
✓
1. Verify that the VPC networks have non-overlapping IP ranges. 2. Create a VPC peering connection from Project A to Project B. 3. Create a VPC peering connection from Project B to Project A. 4. Verify the peering status and network connectivity.
VPC peering requires bidirectional connections; both sides must initiate peering. IP ranges must not overlap.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
1. Verify that the VPC networks have non-overlapping IP ranges. 2. Create a VPC peering connection from Project A to Project B. 3. Create a VPC peering connection from Project B to Project A. 4. Verify the peering status and network connectivity.
Why this is correct
This order ensures prerequisites are met (non-overlapping IPs), then establishes both directions of peering, which is required for bidirectional communication. Finally, verification confirms success.
- ✗
1. Verify that the VPC networks have non-overlapping IP ranges. 2. Create a VPC peering connection from Project A to Project B. 3. Verify the peering status and network connectivity. (No peering from Project B to Project A)
Why it's wrong here
This order creates only one side of the peering. VPC peering requires both sides to be set up; otherwise, traffic flows only in one direction or not at all.
- ✗
1. Create a VPC peering connection from Project A to Project B. 2. Create a VPC peering connection from Project B to Project A. 3. Verify that the VPC networks have non-overlapping IP ranges. 4. Verify the peering status and network connectivity.
Why it's wrong here
Checking IP range overlap is done after peering attempts. If IPs overlap, peering will fail, so this order wastes effort and causes potential errors early.
- ✗
1. Create a VPC peering connection from Project B to Project A. 2. Create a VPC peering connection from Project A to Project B. 3. Verify that the VPC networks have non-overlapping IP ranges. 4. Verify the peering status and network connectivity.
Why it's wrong here
Similar to C but reverses the order of peering creation. However, the critical flaw is still performing IP range check after creating peering, which can lead to immediate failure.
Go deeper
Related to this question
Learn chapter
VPC Peering and Shared VPC
Key term
VPC peering
VPC peering is a direct network connection between two virtual private clouds that allows them to communicate using private IP addresses as if they were part of the same network.
Key term
VPC network
A Virtual Private Cloud (VPC) network is a logically isolated section of a public cloud provider's infrastructure where you can launch cloud resources in a virtual network that you define and control.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.