Design and Implement Appropriate Metrics and Queries for DevOps AZ-400 Practice Questions (Page 8)

Questions 36–40

1. 36expert · hard

   A DevOps team wants to increase deployment frequency while maintaining reliability. They have data on deployment frequency, change failure rate, and mean time to recovery. They notice that increasing deployment frequency has led to a higher change failure rate. They want to find a metric that balances speed and stability. Which metric should they use as a leading indicator?

   • AThe ratio of change failure rate to deployment frequency.
   • BThe number of rollbacks per month.
   • CThe average lead time for changes.
   • DThe percentage of deployments that are automated.
   Reveal Solution Discussion Select an answer first
2. 37foundation · easy

   Which metric is most useful for a DevOps team to estimate how much work they can complete in an upcoming sprint?

   • ACycle time
   • BLead time
   • CChange failure rate
   • DVelocity
   Reveal Solution Discussion Select an answer first
4. 38application · medium

   A DevOps team wants a single dashboard that shows the average time from code commit to production deployment, the average time from a bug being reported to a fix being deployed, and the percentage of deployments that succeed on the first attempt. The team wants to see trends over the last 30 days and be able to filter by service. Which three widgets should be added to the dashboard?

   • AA lead time trend chart, a time-to-recovery trend chart, and a deployment success rate chart
   • BA cumulative flow diagram, a lead time trend chart, and a change failure rate chart
   • CA cycle time scatter plot, a mean time between failures chart, and a deployment frequency bar chart
   • DA throughput chart, a defect escape rate chart, and a release burn-down chart
   Reveal Solution Discussion Select an answer first
5. 39foundation · easy

   Which metric is specifically designed to measure the time it takes to restore service after a production failure?

   • ADeployment frequency
   • BMean time between failures (MTBF)
   • CChange failure rate
   • DMean time to recovery (MTTR)
   Reveal Solution Discussion Select an answer first
6. 40application · medium

   A team wants to improve their incident response process. They have data on incident detection time, time to assign an owner, and time to resolution. They want to focus on reducing the time it takes to start working on an incident after it is detected. Which metric should they track?

   • AMean time to resolve (MTTR), measured from alert trigger to incident closure.
   • BMean time to acknowledge (MTTA), measured from alert trigger to first response by a team member.
   • CThe percentage of incidents resolved within the service level agreement (SLA).
   • DThe number of incidents per week.
   Reveal Solution Discussion Select an answer first