AWS Certified SysOps Administrator – Associate (legacy) — Question 786

A system admin wants to add more zones to the existing ELB. The system admin wants to perform this activity from CLI. Which of the below mentioned command helps the system admin to add new zones to the existing ELB?

Answer options

• A. elb-enable-zones-for-lb
• B. elb-add-zones-for-lb
• C. It is not possible to add more zones to the existing ELB
• D. elb-configure-zones-for-lb

Correct answer: A

Explanation

The command `elb-enable-zones-for-lb` is the correct AWS Classic CLI command used to add one or more Availability Zones to an existing Elastic Load Balancer. The other command options, such as `elb-add-zones-for-lb` and `elb-configure-zones-for-lb`, do not exist in the AWS CLI. It is fully supported to scale an existing ELB across more zones to ensure high availability and better traffic distribution.