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Which of the following are characteristics of a reserved instance? (Choose three.)
A. It can be migrated across Availability Zones
B. It is specific to an Amazon Machine Image (AMI)
C. It can be applied to instances launched by Auto Scaling
D. It is specific to an instance Type
E. It can be used to lower Total Cost of Ownership (TCO) of a system
Correct Answer: ACE
Explanation/Reference:
Explanation:
You can use Auto Scaling or other AWS services to launch the On-Demand instances that use your Reserved Instance benefits. For information about launching On-Demand instances, see Launch Your Instance. For information about launching instances using Auto Scaling, see the Auto Scaling User Guide. http:// docs.aws.amazon.com/AWSEC2/latest/UserGuide/concepts-on-demand- reserved-instances.htmlhttps://fonjms.aws.amazon.com/thread.jspa?threadlD-56501
ACDE
Modifying Reserved Instances
When your computing needs change, you can modify your Standard or Convertible Reserved Instances and continue to benefit from the billing benefit. You can modify the Availability Zone, scope, network platform, or instance size (within the same instance type) of your Reserved Instance. To modify a Reserved Instance, you specify the Reserved Instances that you want to modify, and you specify one or more target configurations.