A scaling policy can trigger scaling activities, which is a way to adjust the number of instances or bandwidth in a scaling group. The scaling policy specifies the conditions that need to be met and…

Question

Options

• ATrue
• BFalse

• A
  81% (26)
• B
  19% (6)

Explanation

Option A is correct because the statement accurately describes how scaling policies function in cloud auto-scaling systems: they define the triggering conditions and the actions to take, and the system enforces them automatically without manual intervention. The three policy types named - alarm, timing, and periodic - represent the standard set supported by platforms such as Alibaba Cloud Auto Scaling, where alarm policies respond to metric thresholds, timing policies fire at a specific date and time, and periodic policies repeat on a defined schedule. Option B is incorrect because no part of the statement is false; each claim about scaling policy behavior is consistent with documented cloud auto-scaling functionality.

Memory tip: Think of a scaling policy as a contract with three parts - the condition, the action, and the trigger type. The three trigger types (alarm, timing, periodic) map neatly to "if a metric spikes," "at a set moment," and "on a repeating schedule," which covers all common real-world scaling scenarios.

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