- A
Create a global external HTTPS load balancer with serverless NEGs pointing to each regional Cloud Run service, and attach a Google-managed certificate.
The global load balancer uses anycast IP and routes to the closest healthy backend, and serverless NEGs integrate with Cloud Run.
- B
Enable anycast on the Cloud Run service by selecting the 'global' setting in the Cloud Run region selection.
Why wrong: Cloud Run does not support anycast natively.
- C
Use Cloud DNS with geo-routing policy to point users to the appropriate regional load balancer IP based on their location.
Why wrong: This uses multiple IPs, not anycast.
- D
Configure Cloud CDN in front of the Cloud Run services to cache responses at edge locations.
Why wrong: CDN caches but does not route traffic to nearest backend; it serves from cache or origin.
Multi-Region Cloud Run with Global HTTPS Load Balancer — Google Professional Cloud Developer Explained
This PCD practice question tests your understanding of integrating google cloud services. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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.
Your organization runs a multi-region application on Cloud Run that serves an API. The API is consumed by clients worldwide. You want to reduce latency by routing users to the nearest regional Cloud Run service. Currently, all traffic goes to a single Cloud Run service in us-central1. You have set up additional Cloud Run services in europe-west1 and asia-east1. Each service is fronted by an external HTTPS load balancer with a regional backend. You want to use a single global anycast IP address that automatically directs users to the closest healthy backend. You also need to support HTTPS with a custom domain and a Google-managed certificate. What should you do?
Quick Answer
The correct answer is to create a global external HTTPS load balancer with serverless NEGs pointing to each regional Cloud Run service, and attach a Google-managed certificate. This works because a global external HTTPS load balancer uses Google Front Ends (GFEs) with a single anycast IP, automatically routing users to the nearest healthy backend based on proximity and capacity, while serverless NEGs allow the load balancer to directly target regional Cloud Run services without needing an intermediary. On the Google Professional Cloud Developer exam, this scenario tests your understanding of global versus regional load balancing and how serverless NEGs integrate with Cloud Run for multi-region deployments. A common trap is confusing Cloud CDN or geo-based DNS routing with true anycast; CDN caches content but doesn’t route by locality, and DNS geo-routing uses multiple IPs, not a single anycast address. Memory tip: think “GFE + NEG = global anycast for serverless.”
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
Create a global external HTTPS load balancer with serverless NEGs pointing to each regional Cloud Run service, and attach a Google-managed certificate.
The correct answer is A. A global external HTTPS load balancer with serverless NEGs (Network Endpoint Groups) can route traffic to the nearest healthy backend (Cloud Run service) via a single anycast IP address, leveraging Google Front Ends (GFEs) for global anycast. This also supports a Google-managed certificate attached to the load balancer for HTTPS with a custom domain. Option B is incorrect because Cloud Run itself does not support anycast; it is a regional service. Option C is incorrect because geo-routing DNS does not provide a single anycast IP; it returns different IPs based on location, which can cause issues with client DNS caching and doesn't provide true anycast routing. Option D is incorrect because Cloud CDN is for caching content, not for routing traffic based on proximity.
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.
- ✓
Create a global external HTTPS load balancer with serverless NEGs pointing to each regional Cloud Run service, and attach a Google-managed certificate.
Why this is correct
The global load balancer uses anycast IP and routes to the closest healthy backend, and serverless NEGs integrate with Cloud Run.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Enable anycast on the Cloud Run service by selecting the 'global' setting in the Cloud Run region selection.
Why it's wrong here
Cloud Run does not support anycast natively.
- ✗
Use Cloud DNS with geo-routing policy to point users to the appropriate regional load balancer IP based on their location.
Why it's wrong here
This uses multiple IPs, not anycast.
- ✗
Configure Cloud CDN in front of the Cloud Run services to cache responses at edge locations.
Why it's wrong here
CDN caches but does not route traffic to nearest backend; it serves from cache or origin.
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.
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 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.
Quick reference
Cloud Service Model Comparison
| Model | You Manage | Provider Manages | Examples |
|---|---|---|---|
| IaaS | OS, runtime, apps, data | Hardware, hypervisor, networking | EC2, Azure VMs, GCP Compute Engine |
| PaaS | Apps and data | OS, runtime, middleware, hardware | Elastic Beanstalk, Azure App Service |
| SaaS | Data and settings only | Everything else | Microsoft 365, Salesforce, Workday |
| FaaS / Serverless | Function code only | Infra, scaling, runtime | Lambda, Azure Functions, Cloud Run |
| CaaS | Containers and apps | Kubernetes, OS, hardware | EKS, AKS, GKE |
What to study next
Got this wrong? Here's your next step.
Identify which PCD 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 PCD question test?
Integrating Google Cloud services — This question tests Integrating Google Cloud services — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Create a global external HTTPS load balancer with serverless NEGs pointing to each regional Cloud Run service, and attach a Google-managed certificate. — The correct answer is A. A global external HTTPS load balancer with serverless NEGs (Network Endpoint Groups) can route traffic to the nearest healthy backend (Cloud Run service) via a single anycast IP address, leveraging Google Front Ends (GFEs) for global anycast. This also supports a Google-managed certificate attached to the load balancer for HTTPS with a custom domain. Option B is incorrect because Cloud Run itself does not support anycast; it is a regional service. Option C is incorrect because geo-routing DNS does not provide a single anycast IP; it returns different IPs based on location, which can cause issues with client DNS caching and doesn't provide true anycast routing. Option D is incorrect because Cloud CDN is for caching content, not for routing traffic based on proximity.
What should I do if I get this PCD question wrong?
Identify which PCD 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.
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Last reviewed: Jun 24, 2026
This PCD 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 PCD exam.
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