Câu 199: AWS Certified SysOps Administrator(Old)
A SysOps Administrator created an Application Load balancer (ALB) and placed two Amazon EC2 instances in the same subnet behind the ALB. During monitoring, the Administrator observes HealthyHostCount drop to 1 in Amazon CloudWatch. What is MOST likely causing this issue?
Nội dung câu hỏi
A SysOps Administrator created an Application Load balancer (ALB) and placed two Amazon EC2 instances in the same subnet behind the ALB. During monitoring, the Administrator observes HealthyHostCount drop to 1 in Amazon CloudWatch. What is MOST likely causing this issue?
Các lựa chọn
Đáp án được giữ gọn theo nhãn A, B, C, D trong phần bình chọn tương tác.
- A. The EC2 instances are in the same Availability Zone, causing contention between the two. — đáp án hiện tại
- B. The route tables are not updated to allow traffic to flow between the ALB and the EC2 instances.
- C. The ALB health check has failed, and the ALB has taken EC2 instances out of service.
- D. The Amazon Route 53 health check has failed, and the ALB has taken EC2 instances out of service.
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