Task 3.4: Determine a Strategy to Improve Reliability. SAP-C02 Practice Questions (Page 6)

Questions 26–30

1. 26foundation · easy

   Which AWS practice is an example of reducing the blast radius of a failure?

   • AConsolidating all microservices into one deployment unit
   • BDeploying an application across multiple Availability Zones
   • CStoring all backups in the same region as the primary data
   • DUsing a single large instance type to handle all traffic
   Reveal Solution Discussion Select an answer first
2. 27foundation · easy

   What is the primary role of Elastic Load Balancing in a self-healing architecture?

   • ATo provide a static IP address for the application
   • BTo automatically scale the number of instances
   • CTo store application data redundantly
   • DTo distribute traffic only to healthy targets
   Reveal Solution Discussion Select an answer first
4. 28application · medium

   A company has a critical application that must maintain 99.99% availability. The application is deployed across multiple Availability Zones. The team wants to proactively test the system's ability to withstand an Availability Zone failure without impacting production traffic. What should the team do?

   • AManually terminate all instances in one Availability Zone during a maintenance window.
   • BCreate a CloudWatch alarm that triggers an SNS notification when an instance fails, and rely on the operations team to respond.
   • CPerform a failover test by rebooting the primary database instance and observing the application's behavior.
   • DUse AWS Fault Injection Simulator (FIS) to run a controlled experiment that disrupts one Availability Zone in a staging environment.
   Reveal Solution Discussion Select an answer first
5. 29foundation · easy

   Which practice helps manage dependencies on third-party services to improve resilience?

   • AUsing retries with exponential backoff
   • BHardcoding the IP addresses of third-party services
   • CAvoiding the use of message queues
   • DMaking all API calls synchronously
   Reveal Solution Discussion Select an answer first
6. 30application · medium

   A company runs a web application on EC2 instances behind an Application Load Balancer. The application experiences predictable traffic spikes on the first day of every month. The company wants to ensure capacity is available before the spike and avoid over-provisioning. What should a solutions architect do?

   • AUse scheduled scaling to add capacity a few hours before the expected spike and remove it after.
   • BConfigure a target tracking scaling policy based on average CPU utilization.
   • CIncrease the minimum size of the Auto Scaling group to handle the peak load at all times.
   • DEnable Auto Scaling group instance refresh to replace instances with newer ones before the spike.
   Reveal Solution Discussion Select an answer first