PCNE Implementing a Virtual Private Cloud Practice Question
A company has deployed a global application on Compute Engine instances in multiple regions. Users are experiencing high latency connecting to the application. The network team wants to use Google Cloud's global network to improve performance. Which approach should they take?
⚠ Common exam trap
Google Cloud often tests the misconception that anycast IPs can be directly assigned to instances or that BGP-based anycast is a viable option in Google Cloud, when in fact only Google-managed load balancers can provide anycast IPs, and customers cannot advertise their own anycast prefixes.
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
✓
Deploy a global HTTP(S) Load Balancer with backend services in each region.
A global HTTP(S) Load Balancer uses Google Cloud's global anycast IP address and the Google Front End (GFE) infrastructure to route traffic over Google's private network to the closest healthy backend instance. This reduces latency by avoiding the public internet and leveraging Google's global fiber backbone, making it the correct choice for improving performance for a globally distributed application.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Deploy a global HTTP(S) Load Balancer with backend services in each region.
Why this is correct
Global HTTP(S) LB uses anycast IP and proxies traffic to the closest region, reducing latency.
- ✗
Use Cloud DNS with geo-routing to direct users to regional load balancers.
Why it's wrong here
DNS-based routing does not provide the performance of proximity-based anycast on Google's network; it also has caching issues.
- ✗
Set up Cloud NAT with multiple static IP addresses for each region.
Why it's wrong here
Cloud NAT is for outbound traffic only, not for inbound user traffic.
- ✗
Assign a global anycast IP address to all instances and use BGP to advertise it.
Why it's wrong here
Global anycast IP addresses are not supported in Google Cloud for direct instance assignment; BGP advertising is not possible.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This PCNE 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 PCNE exam.