6.6 Ensuring the Reliability of Solutions in Production (e.g., Chaos Engineering, Penetration Testing, and Load Testing) PROFESSIONAL-CLOUD-ARCHITECT Practice Questions (Page 6)

Questions 26–30

1. 26application · medium

   A cloud-based collaboration tool has experienced two outages in the past month due to unexpected failures in a microservice. The SRE team wants to use chaos engineering to prevent future outages. What is the primary purpose of this initiative?

   • ATo ensure the system meets regulatory compliance requirements.
   • BTo proactively identify weaknesses in the system before they cause outages.
   • CTo identify security vulnerabilities that could be exploited by attackers.
   • DTo measure the system's performance under peak load.
   Reveal Solution Discussion Select an answer first
2. 27foundation · easy

   Which metric is most commonly used to assess the results of a load test?

   • AMean time to recovery
   • BNumber of security vulnerabilities
   • CNumber of failed chaos experiments
   • DResponse time
   Reveal Solution Discussion Select an answer first
4. 28application · medium

   A food delivery app experiences slow response times during lunch hours. The engineering team wants to run a load test to identify the bottleneck. What is the first step in planning the load test?

   • AScale up the application servers before running the test to ensure it passes.
   • BDefine the test objectives, such as the expected number of concurrent users and the target response time.
   • CRun a chaos experiment to test the system's resilience to a server failure.
   • DImmediately run the load test with a high number of users to see what happens.
   Reveal Solution Discussion Select an answer first
5. 29application · medium

   An online gaming company runs its game servers on Compute Engine instances in a managed instance group. The SRE team wants to test the system's resilience to a sudden loss of a single instance. What is the most appropriate chaos experiment?

   • ARun a load test to see how the system performs under high traffic.
   • BTerminate one instance in the managed instance group and observe whether the group automatically replaces it and whether the game service remains available.
   • CDisable the managed instance group's auto-healing to see if the instance recovers on its own.
   • DTerminate all instances in the managed instance group to test the worst-case scenario.
   Reveal Solution Discussion Select an answer first
6. 30application · medium

   A media streaming company is preparing for a major live event. The engineering team wants to verify that the platform can handle the expected peak load of 10 million concurrent viewers. What should they do to assess this?

   • ARun a chaos experiment that terminates a random pod to see if the system recovers.
   • BRun a penetration test to identify security vulnerabilities that could be exploited during the event.
   • CRun a load test that simulates 10 million concurrent users and monitor key performance indicators like latency and error rates.
   • DReview the system's architecture and assume it will handle the load based on past performance.
   Reveal Solution Discussion Select an answer first