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Answer: Set the Max Surge to 100%.
To deploy a new instance template without service impact, the MIG should prioritize maintaining capacity during the update. Setting **Max Surge to 100%** (Option A) allows the MIG to temporarily create up to 100% more instances than the target size. This ensures new instances are fully provisioned before old ones are terminated, preventing downtime. - **Option B (Opportunistic Update mode)** does not guarantee immediate or automated replacement of instances, making it unsuitable for urgent fixes. - **Option C (Maximum Unavailable 100%)** would cause all instances to be taken down simultaneously, leading to service disruption. - **Option D (Minimum Wait time 0)** speeds up the update but does not inherently prevent capacity loss if other parameters (like Max Surge) are not configured correctly.
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When deploying a new instance template to address a critical vulnerability across hundreds of Compute Engine instances in a multi-zone managed instance group (MIG), which MIG setting should be configured to ensure zero service disruption during the update?
A
Set the Max Surge to 100%.
B
Set the Update mode to Opportunistic.
C
Set the Maximum Unavailable to 100%.
D
Set the Minimum Wait time to 0 seconds.