In reviewing the Auto Scaling events for your application you notice that your application is scaling up and down multiple times in the same hour. What design choice could you make to optimize for cost while preserving elasticity?
A. Modify the Auto Scaling policy to use scheduled scaling actions
B. Modify the Auto Scaling group termination policy to terminate the oldest instance first.
C. Modify the Auto Scaling group cool-down timers.
D. Modify the Amazon CloudWatch alarm period that triggers your Auto Scaling scale down policy.
E. Modify the Auto Scaling group termination policy to terminate the newest instance first.
Answer: C. Modify the Auto Scaling group cool-down timers.
D. Modify the Amazon Cloud Watch alarm period that triggers your Auto Scaling scale down policy.
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Which of the following statements describes block scope?
a. It begins at the beginning of the class declaration and terminates at the closing End Class. b. It limits label scope to only the method in which it is declared. c. It begins at the identifier's declaration and ends at the terminating End clause. d. It is valid for one statement only.
Answer the following statements true (T) or false (F)
1. Numeric variables can be initialized to zero or any other number, but once they are initialized, they cannot be changed. 2. The following two statements are equivalent. (T/F) var1 = var2 var2 = var1 3. The value of (11 Mod 2) is 1. 4. The value of (11 \ 2) is 1. 5. If strVar.Length is 5, then the value of strVar.Substring(4, 1)