Task 3.2: Design High-Performing and Elastic Compute Solutions SAA-C03 Practice Questions (Page 1)

Questions 1–5

1. 1foundation · easy

   A company has a web application that writes to a database. The database sometimes experiences high load, causing the application to slow down. The company wants to decouple the write operations so the application can continue to respond quickly even if the database is slow. Which AWS service should be used to decouple the application from the database?

   • AAmazon SNS
   • BAmazon CloudFront
   • CElastic Load Balancer
   • DAmazon SQS
   Reveal Solution Discussion Select an answer first
2. 2foundation · easy

   A company has a queue-based application where workers poll an SQS queue. The company wants to scale the number of workers based on the number of messages in the queue. Which metric is most appropriate to trigger scaling?

   • ACPU utilization of the workers
   • BApproximateNumberOfMessagesVisible
   • CMemory utilization of the workers
   • DNetwork traffic of the workers
   Reveal Solution Discussion Select an answer first
4. 3expert · hard

   A company runs a real-time file processing application that uses AWS Lambda. The function processes files up to 100 MB and typically completes in 5 minutes. The company wants to reduce costs. The current memory setting is 512 MB and the function is CPU-bound. The company has observed that increasing memory to 1 GB reduces execution time by 40%. What should the company do to minimize cost?

   • AMove the function to a larger EC2 instance to get more CPU power.
   • BUse AWS Fargate with a task that has 1 GB memory and 1 vCPU.
   • CKeep the memory at 512 MB because increasing memory increases the per-GB-second cost.
   • DIncrease the memory to 1 GB because the 40% reduction in execution time will lower the total cost.
   Reveal Solution Discussion Select an answer first
5. 4foundation · easy

   A company wants to build an event-driven application that responds to changes in an S3 bucket and processes each event by running code. The company wants to minimize operational overhead and only pay for the compute time used. Which AWS service is best suited for this event-driven pattern?

   • AAWS Batch
   • BAWS Lambda
   • CAmazon ECS with Fargate
   • DAmazon EC2
   Reveal Solution Discussion Select an answer first
6. 5application · medium

   A gaming company runs a real-time multiplayer game backend on EC2 instances in a single AWS Region. Players in different geographic regions experience high latency. The company wants to reduce latency for all players without moving the game state to multiple regions. Which solution should the company use?

   • AUse AWS Global Accelerator to route traffic over the AWS global network to the application endpoint in the single Region.
   • BUse Amazon CloudFront with a custom origin to cache static game assets and serve them from edge locations.
   • CDeploy the game backend to multiple AWS Regions and use Route 53 latency-based routing to direct players to the closest region.
   • DPlace the EC2 instances in multiple Availability Zones within the same Region and use an Application Load Balancer.
   Reveal Solution Discussion Select an answer first