Google PCA Design and plan a cloud solution architecture Practice Question
Which TWO statements are true regarding the benefits of using VPC Network Peering over Cloud VPN for connecting two VPC networks?
⚠ Common exam trap
Test-takers frequently confuse the lack of encryption in VPC Network Peering as a disadvantage, but the question asks for benefits, so encryption (Option E) is not a benefit of peering; instead, the lower latency and reduced egress costs are the key advantages.
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
✓
VPC Network Peering provides lower latency because traffic stays within Google's network.
VPC Network Peering uses Google's internal infrastructure to route traffic directly between VPC networks, avoiding the public internet and reducing the number of network hops. This results in lower latency compared to Cloud VPN, which typically encrypts and tunnels traffic over the public internet, introducing additional overhead and potential variability in latency.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
VPC Network Peering provides lower latency because traffic stays within Google's network.
Why this is correct
Peering uses Google's internal network, avoiding internet hops, thus lower latency.
- ✗
VPC Network Peering requires a separate VPN gateway appliance.
Why it's wrong here
Peering does not require any gateway; it's a direct connection.
- ✓
Cloud VPN incurs egress costs for data transfer, while VPC Network Peering typically does not.
Why this is correct
Peering traffic within the same region is free; cross-region peering has costs but generally lower than VPN with egress.
- ✗
VPC Network Peering can only be established within the same organization.
Why it's wrong here
Peering can be set up across different organizations.
- ✗
Cloud VPN encrypts traffic, which VPC Network Peering does not.
Why it's wrong here
This is true but not a benefit of peering; peering does not provide encryption.
Go deeper
Related to this question
Learn chapter
Introduction to Google Cloud Platform
Key term
Latency
Latency is the time delay between a request being sent over a network and the response being received, often measured in milliseconds.
Key term
Route
A route is a path that data takes through a network from one device or network to another, determined by routing protocols and configured rules.
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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.