ACE Question 33

Community Discussion

Written by other learners. Comments can disagree with the marked answer — check the official documentation when in doubt.

• Chose B1

  A MIG's basic job, independent of autoscaling, is to maintain the target size you set. If an instance crashes, is deleted, or fails a health check, the MIG automatically recreates it to bring the group back to the target size (this is sometimes called "auto-healing" — a separate feature from autoscaling). Autoscaling only controls whether GCP automatically changes the target size up or down based on load metrics (CPU, load balancer capacity, etc.). Turning it Off just means the target size stays fixed at whatever you set (1, in this case) — it doesn't mean the MIG stops maintaining that count.

• Chose A1

  A - Correct - It correctly solves the problem with only a single instance at one time B - Incorrect - Does not fit the requirement because AFTER the deletion of the instance, no other instance was created

• Chose A1

  Por qué usar autoscaling ON con min=1 y max=1: Si el autoscaling está activado, el grupo puede recrear automáticamente la instancia si falla (por ejemplo, si el VM se detiene o se elimina). Con min=1 y max=1, garantizas que solo exista una instancia en todo momento. Esto es la práctica recomendada para asegurar disponibilidad sin permitir escalado horizontal.