Google PCA Manage implementation of cloud architecture Practice Question
This PCA practice question tests your understanding of manage implementation of cloud architecture. 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 company is running a multi-region application on Google Kubernetes Engine with workloads in us-central1 and europe-west1. They want to route traffic to the closest region based on user location. Which three components should they configure? (Choose three.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Cloud DNS with geo-routing policy
Option B is correct because Cloud DNS geo-routing policy directs DNS queries to the closest healthy backend based on the user's geographic location, enabling traffic to be routed to the nearest GKE region (us-central1 or europe-west1). This is essential for minimizing latency and optimizing user experience in a multi-region setup.
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.
Read the scenario before looking for a memorised answer.
✓
Network endpoint groups (NEGs) pointing to GKE pods
Why this is correct
Enables load balancer to send traffic directly to pods.
Related concept
Read the scenario before looking for a memorised answer.
✗
Regional internal load balancer
Why it's wrong here
Used for internal traffic within a VPC, not for external users.
✓
Global external HTTP(S) load balancer
Why this is correct
Routes user traffic to the closest healthy backend region.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse Cloud Armor's security filtering capabilities with traffic routing, or mistakenly think a regional internal load balancer can handle multi-region traffic, when in fact only a global external HTTP(S) load balancer combined with geo-routing DNS and NEGs can achieve proximity-based routing across regions.
Detailed technical explanation
How to think about this question
Geo-routing in Cloud DNS uses EDNS0 client subnet (ECS) to infer the user's approximate location and returns the IP address of the nearest healthy backend. The global external HTTP(S) load balancer (Option E) integrates with NEGs (Option C) to terminate traffic at the edge and forward it to the closest GKE pods via the load balancer's anycast IP, ensuring low-latency routing without requiring DNS-based geo-routing for every request.
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.
TExam Day Tips
→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 healthcare organisation deploys an application with a public-facing web tier and a private database tier. The database subnet has no public IP and only accepts connections from the web tier's security group. Questions like this test whether you can design cloud network isolation using VNets/VPCs, subnets, and security group rules.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this PCA question in full detail.
Manage implementation of cloud architecture — This question tests Manage implementation of cloud architecture — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Cloud DNS with geo-routing policy — Option B is correct because Cloud DNS geo-routing policy directs DNS queries to the closest healthy backend based on the user's geographic location, enabling traffic to be routed to the nearest GKE region (us-central1 or europe-west1). This is essential for minimizing latency and optimizing user experience in a multi-region setup.
What should I do if I get this PCA question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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