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Exam AWS Certified SysOps Administrator - Associate topic 1 question 130 discussion

Exam question from Amazon's AWS Certified SysOps Administrator - Associate
Question #: 130
Topic #: 1
[All AWS Certified SysOps Administrator - Associate Questions]

A company runs a web application on three Amazon EC2 instances behind an Application Load Balancer (ALB). The company notices that random periods of increased traffic cause a degradation in the application’s performance. A SysOps administrator must scale the application to meet the increased traffic.

Which solution meets these requirements?

  • A. Create an Amazon CloudWatch alarm to monitor application latency and increase the size of each EC2 instance if the desired threshold is reached.
  • B. Create an Amazon EventBridge (Amazon CloudWatch Events) rule to monitor application latency and add an EC2 instance to the ALB if the desired threshold is reached.
  • C. Deploy the application to an Auto Scaling group of EC2 instances with a target tracking scaling policy. Attach the ALB to the Auto Scaling group.
  • D. Deploy the application to an Auto Scaling group of EC2 instances with a scheduled scaling policy. Attach the ALB to the Auto Scaling group.
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Suggested Answer: C 🗳️
by Liongeek at Nov. 17, 2022, 3:50 a.m.
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BugsBunny9998666
Highly Voted 1 year, 10 months ago
Selected Answer: C
target tracking scaling policy is perfect for RANDOM periods of increased traffic. For those who choose D, D is NOT an option here what are you ? Wizard with crystal ball to know when traffic will increase ?
upvoted 11 times
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beznika
Highly Voted 1 year, 10 months ago
It would be very useful to have downvote option as well.
upvoted 6 times
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Christina666
Most Recent 1 year, 3 months ago
Selected Answer: C
random traffic-> target scheduling
upvoted 2 times
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michaldavid
1 year, 10 months ago
Selected Answer: C
ccccccc
upvoted 1 times
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beznika
1 year, 10 months ago
C is the right answer. How can it D if the option says scheduled scaling! How can you schedule scaling when you have random increase in traffic?
upvoted 2 times
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marcelodba
1 year, 11 months ago
Selected Answer: C
It's says random periods so schedule it's not an option
upvoted 4 times
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Xelnak
1 year, 11 months ago
Selected Answer: D
Scheduled scaling helps you to set up your own scaling schedule according to predictable load changes. For example, let's say that every week the traffic to your web application starts to increase on Wednesday, remains high on Thursday, and starts to decrease on Friday. You can configure a schedule for Amazon EC2 Auto Scaling to increase capacity on Wednesday and decrease capacity on Friday. https://docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-scheduled-scaling.html
upvoted 1 times
AgboolaKun
5 months ago
You only use scheduled scaling only if traffic increase is predictable. The question says "the company notices that random periods of increased traffic ....", this shows that the time of traffic increase is unknown. Therefore, this is perfect use case for target scheduling.
upvoted 1 times
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Liongeek
1 year, 11 months ago
Ans: C
upvoted 2 times
Liongeek
1 year, 11 months ago
My bad, Ans is D. It's says random periods so schedule it's not an option
upvoted 2 times
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