A user has launched five instances and have registered them with an ELB.
How can the user add the sixth EC2 instance to the ELB?
The user must stop the ELB and add the sixth instance.
The user can add the sixth instance on the fly through API, CLI or the AWS Management Con-sole.
The user can add the instance and change the ELB config file.
The ELB can only have a maximum of five instances.
Explanations:
Stopping the ELB is unnecessary to add an instance; ELB supports adding or removing instances dynamically.
The user can add the sixth instance on the fly via API, CLI, or AWS Console without stopping the ELB.
No config file changes are required; instances are added dynamically through the API, CLI, or Console.
ELB does not limit the number of registered instances to five; it can support many more instances.
It appears that the answer is:
The user can add the sixth instance on the fly through API, CLI or the AWS Management Con-sole.