Answer-first summary for fast verification
Answer: Create Compute Engine resources in us-central1-b. Balance the load across both us-central1-a and us-central1-b.
The correct answer is A. Creating Compute Engine resources in us-central1-b and balancing the load across both us-central1-a and us-central1-b ensures that the application can handle the failure of a single Compute Engine zone, thereby eliminating downtime. This approach distributes the resources across multiple zones within the same region, providing high availability and minimizing the risk associated with zonal failures. Other options do not sufficiently address the requirement to mitigate zone failure.
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You are currently running an application on Compute Engine virtual machines (VMs) located in the us-central1-a zone. To improve your architecture, you aim to ensure that your application can withstand the failure of a single Compute Engine zone without experiencing any downtime, while also keeping costs as low as possible. What steps should you take to achieve this?
A
Create Compute Engine resources in us-central1-b. Balance the load across both us-central1-a and us-central1-b.
B
Create a Managed Instance Group and specify us-central1-a as the zone. Configure the Health Check with a short Health Interval.
C
Create an HTTP(S) Load Balancer. Create one or more global forwarding rules to direct traffic to your VMs.
D
Perform regular backups of your application. Create a Cloud Monitoring Alert and be notified if your application becomes unavailable. Restore from backups when notified.
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