Answer-first summary for fast verification
Answer: Utilize Managed Instance Groups (MIGs) with instances spread across multiple zones and enable Autoscaling.
The correct answer is **A**. Distributing resources across multiple zones with Managed Instance Groups (MIGs) and enabling Autoscaling ensures resilience against zone failures and scalability during peak loads. Preemptible instances (option B) are cost-effective but unsuitable for 24/7 applications due to their temporary nature. Single-zone MIGs (option C) lack zone failure resilience. Unmanaged Instance Groups (option D) do not support Autoscaling, making them less ideal for scalable solutions. References: [Preemptible VMs](https://cloud.google.com/compute/docs/instances/preemptible), [Unmanaged Instance Groups](https://cloud.google.com/compute/docs/instance-groups/creating-groups-of-unmanaged-instances), [Regions and Zones](https://cloud.google.com/compute/docs/regions-zones), [Autoscaler](https://cloud.google.com/compute/docs/autoscaler/).
Author: LeetQuiz Editorial Team
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Your production application is hosted in Google Compute Engine in the us-central1-a zone and must be available 24/7. After an outage due to a zone failure and performance issues during peak usage, you're tasked with recommending a cost-effective, scalable solution resilient to zone failures. What's your recommendation?
A
Utilize Managed Instance Groups (MIGs) with instances spread across multiple zones and enable Autoscaling.
B
Deploy Managed Instance Groups (MIGs) with preemptible instances across multiple zones and enable Autoscaling.
C
Implement Managed Instance Groups (MIGs) with instances in a single zone and enable Autoscaling.
D
Adopt Unmanaged Instance Groups across multiple zones and enable Autoscaling.
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