- A
Deploy in a single region with a Managed Instance Group using 3 availability zones.
Why wrong: Multiple zones in a single region protect against individual zone failures, not regional outages. A regional disaster would affect all zones in that region simultaneously.
- B
Deploy the application in multiple regions with a Global Load Balancer for automated failover.
Multi-region deployment with a Global HTTP(S) Load Balancer provides geographic redundancy. If one region fails, the GLB automatically routes to healthy regions — protecting against regional outages.
- C
Enable Cloud Armor on the load balancer to protect against regional failures.
Why wrong: Cloud Armor is a security service (WAF/DDoS protection), not a geographic availability or failover mechanism.
- D
Use Cloud Storage multi-region buckets for application data.
Why wrong: Multi-region Cloud Storage protects data durability, but data storage redundancy alone doesn't make the application itself available if the compute layer fails in a region.
Quick Answer
The correct architecture pattern is to deploy the application in multiple regions behind a Global Load Balancer for automated failover. This works because the Global Load Balancer continuously performs health checks on backend instances across regions; when a region becomes unavailable due to a disaster, the load balancer automatically detects the failure and routes traffic exclusively to healthy backends in other regions, enabling seamless multi-region disaster recovery. On the Google Cloud Digital Leader exam, this scenario tests your understanding of high-availability design patterns and the distinction between regional and global resources—a common trap is choosing a regional load balancer or a single-region deployment, which cannot survive a full regional outage. Remember the key memory tip: “Global health checks, regional failover”—the Global Load Balancer’s ability to monitor and reroute across regions is what makes automated failover possible without manual intervention.
Cloud Digital Leader Scaling with Google Cloud operations Practice Question
This GCDL practice question tests your understanding of scaling with google cloud operations. 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.
A company runs a mission-critical application that must be available 24/7. They want to ensure that if a Google Cloud region becomes unavailable (e.g., due to a natural disaster), the application automatically continues to serve users from another region. Which architecture pattern achieves this?
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 the application in multiple regions with a Global Load Balancer for automated failover.
Option B is correct because deploying the application in multiple regions behind a Global Load Balancer (GLB) enables automated failover. The GLB uses health checks to detect regional failures and routes traffic only to healthy backends, ensuring continuous availability even if an entire region goes down. This aligns with the requirement for a multi-region active-passive or active-active architecture for disaster recovery.
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.
- ✗
Deploy in a single region with a Managed Instance Group using 3 availability zones.
Why it's wrong here
Multiple zones in a single region protect against individual zone failures, not regional outages. A regional disaster would affect all zones in that region simultaneously.
- ✓
Deploy the application in multiple regions with a Global Load Balancer for automated failover.
Why this is correct
Multi-region deployment with a Global HTTP(S) Load Balancer provides geographic redundancy. If one region fails, the GLB automatically routes to healthy regions — protecting against regional outages.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Enable Cloud Armor on the load balancer to protect against regional failures.
Why it's wrong here
Cloud Armor is a security service (WAF/DDoS protection), not a geographic availability or failover mechanism.
- ✗
Use Cloud Storage multi-region buckets for application data.
Why it's wrong here
Multi-region Cloud Storage protects data durability, but data storage redundancy alone doesn't make the application itself available if the compute layer fails in a region.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse zonal redundancy (Option A) with regional redundancy, mistakenly believing that three zones in one region provide the same disaster recovery protection as multiple regions, but a regional failure (e.g., earthquake, power grid collapse) can take down all zones simultaneously.
Detailed technical explanation
How to think about this question
The Global Load Balancer (GLB) uses anycast IP addresses and Google's global network to direct user traffic to the closest healthy backend. Health checks are performed at the application layer (e.g., HTTP 200) or TCP layer, and if a backend group in a region fails consecutive health checks, the GLB automatically removes it from the pool. This architecture supports both active-passive (where standby regions remain idle) and active-active (where all regions serve traffic) configurations, with DNS-based or anycast-based failover typically completing within seconds to minutes depending on health check intervals.
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 media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
What to study next
Got this wrong? Here's your next step.
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FAQ
Questions learners often ask
What does this GCDL question test?
Scaling with Google Cloud operations — This question tests Scaling with Google Cloud operations — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Deploy the application in multiple regions with a Global Load Balancer for automated failover. — Option B is correct because deploying the application in multiple regions behind a Global Load Balancer (GLB) enables automated failover. The GLB uses health checks to detect regional failures and routes traffic only to healthy backends, ensuring continuous availability even if an entire region goes down. This aligns with the requirement for a multi-region active-passive or active-active architecture for disaster recovery.
What should I do if I get this GCDL 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.
About these practice questions
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Last reviewed: Jun 11, 2026
This GCDL 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 GCDL exam.
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