A Network Load Balancer (NLB) target instance is not entering the InService state.

Amazon Web Services SCS-C02 Question Answer

A Network Load Balancer (NLB) target instance is not entering the InService state. A security engineer determines that health checks are failing.

Which factors could cause the health check failures? (Select THREE.)

The target instance's security group does not allow traffic from the NLB.

The target instance's security group is not attached to the NLB.

The NLB's security group is not attached to the target instance.

The target instance's subnet network ACL does not allow traffic from the NLB.

The target instance's security group is not using IP addresses to allow traffic from the NLB.

The target network ACL is not attached to the NLB.

SCS-C02 PDF/Engine

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