Enhance Productivity and Code Quality GH-300 Practice Questions (Page 6)

Questions 26–30

1. 26foundation · easy

   What is a common use case for GitHub Copilot in modernizing legacy code?

   • ADeleting unused code automatically.
   • BRewriting the entire application in a different language.
   • CConverting old APIs to newer versions.
   • DCreating a backup of the legacy code.
   Reveal Solution Discussion Select an answer first
2. 27foundation · easy

   A developer is new to a codebase and wants to understand what a particular function does. How can GitHub Copilot help?

   • ABy running the function and showing the output.
   • BBy automatically rewriting the function in a simpler language.
   • CBy generating a natural language explanation of the function when prompted.
   • DBy providing a link to the official documentation of the library used.
   Reveal Solution Discussion Select an answer first
4. 28application · medium

   A developer has a Python function that sorts a list of dictionaries by a 'priority' key. The current implementation is verbose and uses a custom comparator. The developer wants to simplify it using a lambda function. What is the best way to use Copilot to refactor this?

   • AAsk Copilot to generate a new sorting function from scratch.
   • BAsk Copilot to generate documentation for the current sorting logic.
   • CManually rewrite the comparator to a lambda without testing.
   • DSelect the sorting code and ask Copilot: 'Simplify this to use a lambda with the key parameter'.
   Reveal Solution Discussion Select an answer first
5. 29application · medium

   A developer is writing a Python script that processes a CSV file of customer orders. They need to filter out orders older than 30 days and group the remaining ones by region. The developer has never used the `csv` module before. While typing a comment describing this logic above an empty function, Copilot suggests a complete implementation. What is the most effective way for the developer to use this suggestion?

   • AAccept the suggestion, then run the script with a small sample CSV to verify the output matches expectations.
   • BReject the suggestion and write the code manually to ensure it is correct.
   • CAsk Copilot to generate sample data first, then accept the suggestion.
   • DAccept the suggestion without review because Copilot generates correct code.
   Reveal Solution Discussion Select an answer first
6. 30foundation · easy

   What is a key benefit of using GitHub Copilot for refactoring code?

   • AIt can suggest code changes that preserve the original functionality.
   • BIt guarantees that the refactored code is faster than the original.
   • CIt rewrites the entire codebase without developer review.
   • DIt automatically deploys the refactored code to production.
   Reveal Solution Discussion Select an answer first