Amazon
SOA-C02 · Question #462
A SysOps administrator is managing a web application that runs on Amazon EC2 instances behind an Application Load Balancer (ALB). The instances run in an EC2 Auto Scaling group. The administrator…
The correct answer is A. AWS/ApplicationELB HealthyHostCount <= 0. "all target instances" means zero Healthy, not one Healthy. "<= 0" means less than or equal to
Submitted by eva_at· Mar 30, 2026Monitoring, Logging, and Remediation
Question
A SysOps administrator is managing a web application that runs on Amazon EC2 instances behind an Application Load Balancer (ALB). The instances run in an EC2 Auto Scaling group. The administrator wants to set an alarm for when all target instances associated with the ALB are unhealthy. Which condition should be used with the alarm?
Options
- AAWS/ApplicationELB HealthyHostCount <= 0
- BAWS/ApplicationELB UnhealthyHostCount >= 1
- CAWS/EC2 StatusCheckFailed <= 0
- DAWS/EC2 StatusCheckFailed >= 1
How the community answered
(54 responses)- A70% (38)
- B7% (4)
- C19% (10)
- D4% (2)
Explanation
"all target instances" means zero Healthy, not one Healthy. "<= 0" means less than or equal to
Topics
#CloudWatch alarms#ALB metrics#HealthyHostCount#health checks
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