Design and Implement Appropriate Metrics and Queries for DevOps AZ-400 Practice Questions (Page 6)

Questions 26–30

1. 26application · medium

   A QA team wants to evaluate the effectiveness of their automated test suite. They have access to test results from Azure Pipelines, code coverage data, and production defect reports. They want to know if the tests are catching defects before release. Which metric should they track?

   • AThe percentage of tests that pass on the first run in the pipeline.
   • BThe average time it takes to run the full test suite.
   • CThe defect escape rate, calculated as the number of production defects divided by the total defects found in testing and production.
   • DThe total number of test cases executed per release.
   Reveal Solution Discussion Select an answer first
2. 27application · medium

   A security team wants to ensure that vulnerabilities are not introduced into the codebase. They have integrated Microsoft Defender for Cloud into their Azure DevOps pipeline. Which metric should they track to measure the effectiveness of their security scanning?

   • APercentage of builds that fail due to security scan findings
   • BNumber of security alerts generated per month
   • CAverage time to fix a security vulnerability
   • DNumber of security scans run per week
   Reveal Solution Discussion Select an answer first
4. 28foundation · easy

   A DevOps team wants to create a dashboard that provides a quick, at-a-glance view of the team's delivery performance. Which combination of metrics would best serve this purpose?

   • ANumber of commits, lines of code, and code coverage
   • BCycle time, time to recovery, and lead time
   • CNumber of open bugs, average bug age, and reopened bug count
   • DCPU utilization, memory usage, and disk I/O
   Reveal Solution Discussion Select an answer first
5. 29expert · hard

   A company's SLO requires 99.9% availability. They currently track MTTR as the time from when the on-call engineer acknowledges the incident to when the incident is marked resolved. The team wants to improve their MTTR, but they are not meeting their SLO. An analysis shows that the time between incident detection and acknowledgment is often 30 minutes or more. Which change to their metrics would best help them improve their SLO?

   • ATrack MTTR only for incidents that cause customer impact
   • BChange the MTTR definition to include the time from detection to acknowledgment
   • CKeep the current MTTR definition but add a separate metric for alert response time
   • DReduce the SLO to 99.5% to make it easier to meet
   Reveal Solution Discussion Select an answer first
6. 30expert · hard

   A team wants to reduce the number of defects that reach production. They have a high unit test coverage percentage, but production incidents are still frequent. An analysis shows that many incidents are caused by integration issues between services. Which metric should the team add to their development process to better predict these integration defects?

   • APercentage of unit tests that pass in the CI pipeline
   • BPercentage of integration tests that pass in the CI pipeline
   • CCode coverage percentage for the entire codebase
   • DNumber of code reviews per pull request
   Reveal Solution Discussion Select an answer first