When Rebalancing, Auto Scaling Launches New Instances Before Terminating the Old

question 140

Multiple Choice

When rebalancing, Auto Scaling launches new instances before terminating the old ones, so that re-balancing does not compromise the performance or availability of your application. Because Auto Scaling attempts to launch new instances before terminating the old ones, being at or near the speci-fied maximum capacity could impede or completely halt rebalancing activities. What does Auto Scaling do in order to avoid this problem?

• A) It can temporarily exceed the specified maximum capacity of a group by a 20 percent margin (or by a 2-instance margin, whichever is greater) during a rebalancing activity.
• B) It can add new reserved instances you have defined.
• C) It can temporarily exceed the specified maximum capacity of a group by a 10 percent margin (or by a 1-instance margin, whichever is greater) during a rebalancing activity.
• D) It can temporarily exceed the specified maximum capacity of a group by a 5 percent margin (or by a 1-instance margin, whichever is greater) during a rebalancing activity.

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