Task 2.4: Design a Strategy to Meet Reliability Requirements SAP-C02 Practice Questions (Page 5)

Questions 21–25

1. 21foundation · easy

   Which AWS service can be used to monitor the CPU utilization of an EC2 instance and trigger an alarm when it exceeds a threshold?

   • AAmazon Inspector
   • BAWS CloudTrail
   • CAmazon CloudWatch
   • DAWS Config
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2. 22foundation · easy

   What is the purpose of performing chaos engineering as part of a reliability testing strategy?

   • ATo test the application's user interface for usability issues
   • BTo intentionally inject failures into a system to verify its resilience
   • CTo ensure that all code changes are reviewed by multiple developers
   • DTo measure the performance of the application under normal load
   Reveal Solution Discussion Select an answer first
4. 23foundation · easy

   Which AWS service can be used to automatically restart an EC2 instance if it fails a status check?

   • AAmazon CloudWatch Alarm with an EC2 recovery action
   • BAmazon S3
   • CAWS CloudFormation
   • DAWS Identity and Access Management (IAM)
   Reveal Solution Discussion Select an answer first
5. 24application · medium

   A financial services company runs a critical transaction-processing application on EC2 instances in a private subnet in the us-east-1 Region. The application writes transaction records to an Amazon RDS for MySQL Multi-AZ DB instance. The compliance team requires that the application recover within 15 minutes of a regional disaster and that no more than 5 minutes of transaction data be lost. The application can be re-provisioned from an AMI, but the database must be recovered. Which strategy meets the recovery requirements?

   • ATake daily snapshots of the RDS DB instance and copy them to a second Region. Restore the latest snapshot in the second Region during a disaster.
   • BUse AWS Database Migration Service (DMS) to continuously replicate changes to an Amazon S3 bucket in the second Region. Restore from S3 during a disaster.
   • CConfigure RDS Multi-AZ with a standby in a second Availability Zone. Failover to the standby automatically during a regional disaster.
   • DEnable cross-Region read replicas for the RDS DB instance. During a disaster, promote a replica to a standalone DB instance in the second Region.
   Reveal Solution Discussion Select an answer first
6. 25application · medium

   A media company runs a stateless web application on a fleet of EC2 instances behind an Application Load Balancer (ALB) in three Availability Zones. The instances are in an Auto Scaling group with a minimum of 6 and a maximum of 15 instances. The application occasionally experiences memory leaks that cause instances to become unresponsive. The operations team wants to automate the replacement of unhealthy instances without manual intervention. Which solution meets this requirement?

   • AConfigure the Auto Scaling group to use EC2 status checks only. The Auto Scaling group will replace instances that fail the status check.
   • BPlace the instances in an Auto Scaling group and rely on the default EC2 instance recovery action to reboot the instance when it becomes unresponsive.
   • CUse an Amazon CloudWatch alarm to detect high memory utilization and trigger an Auto Scaling policy to launch additional instances.
   • DConfigure the ALB health check to mark instances as unhealthy when they fail to respond to HTTP requests. The Auto Scaling group will automatically terminate and replace unhealthy instances.
   Reveal Solution Discussion Select an answer first