Practice Test 2 | AWS Certified Cloud Practitioner | CLF-C01 | Dumps | Mock Test
You are working on an e-commerce web application running on an EC2 instance. But it is experiencing a bad performance in browsing and searching use cases when heavy load use-cases are running simultaneously. The application monitors highlight a bottleneck in the web tier.
You decide to re-engineer the application code by decoupling the web tier components from the order’s heavy workloads. What AWS service can support the application change?
A. AWS Auto Scaling
B. AWS Elastic Load Balancing
C. Amazon SQS
D. Amazon Kinesis Streams
Answer: C
- Option A is INCORRECT because it is not a service for decoupling use-case. AWS Auto Scaling adjusts the capacity to maintain performance leaving unchanged the application design.
- Option B is INCORRECT because AWS ELB is a service to distribute the workload across EC2 instance, not a service to support application refactoring or re-engineering.
- Option C is CORRECT because Amazon SQS implements messaging that is a typical integration pattern to decouple application components. AWS documentation mentions “Amazon SQS offers a reliable, highly-scalable hosted queue for storing messages as they travel between applications or microservices. It moves data between distributed application components and helps you decouple these components”.
- Option D is INCORRECT because it is a streaming service not suitable for the scenario.
Diagram: none
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