3.3 Mitigating Incident Impact on Users PROFESSIONAL-CLOUD-DEVOPS-ENGINEER Practice Questions (Page 2)

Questions 6–10

1. 6foundation · easy

   Which of the following is a strategy for adding service capacity to handle increased load during an incident?

   • AChanging the DNS TTL to a lower value
   • BAdding more firewall rules
   • CEnabling autoscaling on a managed instance group
   • DIncreasing the load balancer's timeout settings
   Reveal Solution Discussion Select an answer first
2. 7expert · hard

   A company is running a critical application in a single region. They want to improve availability by failing over to a different region in case of a regional outage. They have set up a global load balancer with backends in both regions. What is the best way to configure the load balancer to automatically fail over?

   • AUse a feature flag to redirect traffic.
   • BSet up a cron job to check the health of the primary region and switch traffic.
   • CConfigure health checks on both backends and set the failover policy to route traffic to the healthy backend.
   • DManually switch traffic to the secondary region when an outage occurs.
   Reveal Solution Discussion Select an answer first
4. 8application · medium

   A batch processing system uses a managed instance group to process jobs from a queue. The system is currently running at 80% CPU utilization. A new large batch of jobs is expected to arrive in the next hour. The team wants to ensure the system can handle the increased load without performance degradation. What should they do?

   • APreemptively scale up the instance group by increasing the number of instances.
   • BWait for the autoscaler to react to the increased load.
   • CReduce the number of instances to save cost.
   • DIncrease the target CPU utilization to 90%.
   Reveal Solution Discussion Select an answer first
5. 9application · medium

   A company is migrating from one region to another. They have a global load balancer with backends in both regions. They want to gradually shift traffic from the old region to the new region over a period of one week to monitor for issues. What is the best approach to achieve this?

   • AGradually adjust the traffic weights of the backends in the load balancer.
   • BScale down the old region's backend to zero.
   • CUse a feature flag to redirect users.
   • DDrain the old region's backend and then delete it.
   Reveal Solution Discussion Select an answer first
6. 10expert · hard

   A company runs a web service on a managed instance group with autoscaling based on CPU utilization. During a traffic spike, the autoscaler is adding instances, but the new instances are taking a long time to become healthy and serve traffic. This is causing the service to be slow. What is the best way to improve the autoscaler's ability to handle traffic spikes?

   • AIncrease the target CPU utilization to 80%.
   • BUse a custom metric for autoscaling that reflects the request queue depth.
   • CDisable autoscaling and manually add instances.
   • DReduce the cooldown period for the autoscaler.
   Reveal Solution Discussion Select an answer first