Evaluate an Application Design and Implementation Considering Maintainability 350-901 Practice Questions (Page 2)

Questions 6–10

1. 6foundation · easy

   Which type of testing verifies that individual units or components of the software work as expected in isolation?

   • ARegression testing
   • BIntegration testing
   • CUnit testing
   • DSystem testing
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2. 7foundation · easy

   What is the primary purpose of a code review process?

   • ATo assign blame for bugs to specific developers
   • BTo replace automated testing
   • CTo identify defects and improve code quality before it is merged
   • DTo ensure code is written in a specific programming language
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4. 8application · medium

   A network automation engineer inherits a Python project that automates router configuration backups. The code has no docstrings, and the only documentation is a README that says 'Run main.py'. The engineer needs to modify the backup scheduling logic. Which documentation improvement would most directly support maintainability in this situation?

   • AAdd comments to the README explaining the history of the project.
   • BRename all variables to be shorter to reduce the amount of text in the code.
   • CCreate a separate design document describing the overall architecture in a wiki.
   • DAdd docstrings to each function and module explaining the purpose, parameters, and return values.
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5. 9application · medium

   A network automation team maintains a Python application that provisions network devices. The application has grown to 5,000 lines in a single file, with functions that directly manipulate device APIs, parse CLI outputs, and write to a database. The team needs to improve maintainability so that new engineers can work on separate concerns without merge conflicts. Which approach best addresses this need?

   • AUse a global configuration file to store all device credentials and database connection strings.
   • BAdd detailed comments to each function in the existing single file to explain what the code does.
   • CCreate a single class that encapsulates all device operations, parsing, and database logic.
   • DSplit the code into separate modules for API interaction, data parsing, and database access, with clear interfaces between them.
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6. 10foundation · easy

   What is the primary benefit of using version control for maintainable application evolution?

   • AIt automatically fixes bugs in the code
   • BIt provides a history of changes and enables collaboration without overwriting each other's work
   • CIt compiles the code faster
   • DIt replaces the need for testing
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