Troubleshoot Common Issues with the Code Life Cycle AT0-001 Practice Questions (Page 3)

Questions 11–15

1. 11application · medium

   A junior developer is writing a Python script to parse configuration files. When they run the script, the interpreter immediately stops and displays: 'SyntaxError: invalid syntax' with a caret pointing to the end of the line: 'if config.get("mode") == "debug":'. The developer insists the line looks correct. Which action should the developer take first to resolve this issue?

   • ACheck the preceding line for an unclosed parenthesis or bracket.
   • BAdd a colon at the end of the if statement to ensure proper syntax.
   • CReplace the double quotes with single quotes around the string 'debug'.
   • DIndent the line with four spaces to match the block structure.
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2. 12application · medium

   A developer is writing a JavaScript function to validate user input. The code is: 'function validate(input) { if (input.length > 0) { return true; } else { return false; }'. When the developer runs the code, they get a 'SyntaxError: missing } after function body'. What is the correct fix?

   • AAdd a closing brace at the end of the function.
   • BChange the return statements to use 'return true' and 'return false' without semicolons.
   • CReplace the if/else with a ternary operator.
   • DRemove the else block and use a single return statement.
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4. 13expert · hard

   A Python script that processes a large JSON file fails intermittently with: 'json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)'. The script reads the file, parses it, and processes the data. The file is valid JSON when checked manually. What is the most likely cause of this intermittent runtime error?

   • AThe file is being written by another process while the script is reading it, resulting in a partial or empty file.
   • BThe JSON file is too large to be parsed by the json module.
   • CThe script is using the wrong encoding to read the file.
   • DThe script is using json.loads() on a file object instead of json.load().
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5. 14foundation · easy

   After a `git merge` command, a developer sees the following in a file: `<<<<<<< HEAD` ... `=======` ... `>>>>>>> feature-branch`. What does this indicate?

   • AThe file has been successfully merged and is ready to commit.
   • BThe file contains a merge conflict that needs manual resolution.
   • CThe file is corrupted and must be deleted.
   • DThe file is a binary file that cannot be merged.
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6. 15application · medium

   A Python script that reads a configuration file fails with the error: 'FileNotFoundError: [Errno 2] No such file or directory: 'config.ini''. The script is run from a CI/CD pipeline, and the file exists in the repository. What is the most likely cause and correct fix?

   • AThe file is corrupted, so the script cannot read it.
   • BThe file is not committed to the repository, so it is not available in the pipeline.
   • CThe current working directory is not the repository root; use an absolute path or os.path.join with the script's directory.
   • DThe script does not have permission to read the file.
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