EC2 instances behind an ALB in an Auto Scaling group must register with an external auditing service before they process transactions. Which solution meets this?
Multiple choice — select one answer
Answer choices
Architectural breakdown & explanation
Lifecycle hooks block the Auto Scaling group until registration succeeds or the instance is abandoned.
Correct answer(s): b. Add a lifecycle hook to put new instances in Pending:Wait; run a registration script; complete the lifecycle action with CONTINUE or ABANDON.
Exam domain: Domain 3: Resilient Cloud Solutions (15% weight on the official guide).
Official documentation & study links
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