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Exam AWS-SysOps topic 1 question 571 discussion

Exam question from Amazon's AWS-SysOps
Question #: 571
Topic #: 1
[All AWS-SysOps Questions]

An administrator is responding to an alarm that reports increased application latency. Upon review, the Administrator notices that the Amazon RDS Aurora database frequently runs at 100% CPU utilization. The application is read heavy and does frequent lookups of a product table.
What should the Administrator do to reduce the application latency?

  • A. Move the product table to Amazon Redshift and use an interleaved sort key
  • B. Add Aurora Replicas and use a Reader Endpoint for product table lookups
  • C. Move the product table to Amazon CloudFront and set the cache-control headers to public
  • D. Use Auto Scaling to add extra Aurora nodes and set a trigger based on CPU utilization
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Suggested Answer: B 🗳️
by sen12 at March 21, 2020, 10:02 a.m.
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sen12
Highly Voted 2 years, 9 months ago
Answer is B - Amazon RDS Read Replicas provide enhanced performance and durability for RDS database (DB) instances. They make it easy to elastically scale out beyond the capacity constraints of a single DB instance for read-heavy database workloads. You can create one or more replicas of a given source DB Instance and serve high-volume application read traffic from multiple copies of your data, thereby increasing aggregate read throughput
upvoted 6 times
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albert_kuo
Most Recent 12 months ago
Selected Answer: B
Adding Aurora Replicas helps offload read traffic from the primary database instance, allowing for better scalability and improved performance. By distributing the read workload across multiple replicas, the CPU utilization of the primary instance can be reduced, leading to decreased application latency.
upvoted 1 times
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kkkn
2 years, 8 months ago
answer is B, I retract my previous comment...
upvoted 1 times
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kkkn
2 years, 9 months ago
Should be read replicas not aurora replicas
upvoted 2 times
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