Evaluate an Application Design and Implementation Considering Maintainability 350-901 Practice Questions (Page 5)

Questions 21–25

1. 21foundation · easy

   Which refactoring technique involves extracting a block of code into a separate method to improve readability and reuse?

   • AInline Method
   • BExtract Method
   • CMove Class
   • DRename Variable
   Reveal Solution Discussion Select an answer first
2. 22expert · hard

   A network automation service is experiencing intermittent failures when applying configurations. The team has added logging, but the logs are inconsistent: some services log in JSON, others in plain text, and there is no request ID. The team wants to improve observability to speed up debugging. What is the most effective first step?

   • ACreate a central log aggregator and store all logs in one place.
   • BAdd more metrics to each service to measure its own performance.
   • CIncrease the log level to DEBUG in all services to capture more detail.
   • DStandardize on structured logging with a common schema and propagate a correlation ID across all services.
   Reveal Solution Discussion Select an answer first
4. 23foundation · easy

   Which observability practice is most useful for tracking the path of a single request as it travels through multiple microservices?

   • ADistributed tracing
   • BMetric collection
   • CAlerting
   • DLog aggregation
   Reveal Solution Discussion Select an answer first
5. 24foundation · easy

   Which principle is most directly supported by breaking a large application into smaller, self-contained components that each handle a single responsibility?

   • ASimplicity
   • BDocumentation
   • CModularity
   • DReadability
   Reveal Solution Discussion Select an answer first
6. 25expert · hard

   A team is migrating a network automation application from a monolithic repository to a monorepo with multiple services. The team wants to enforce code quality and maintainability across all services. They are considering using a single CI/CD pipeline for the entire monorepo. What is the most significant trade-off they should consider?

   • AA single pipeline can become a bottleneck, as a change to any service triggers the full build and test suite, slowing down development.
   • BA single pipeline makes it impossible to have service-specific tests.
   • CA single pipeline ensures that all services are always deployed together, which is always desirable.
   • DA single pipeline eliminates the need for code reviews.
   Reveal Solution Discussion Select an answer first