5. Explain the Benefits of Organizing Code into Methods / Functions, Classes, and Modules 200-901 Practice Questions (Page 5)

Questions 21–25

1. 21application · medium

   A developer is writing a Python script to automate backup of device configurations. The script needs to perform the same backup procedure on 20 devices, but with different IP addresses and credentials. The developer wants to avoid writing the backup logic 20 times. What is the most efficient approach?

   • AWrite a function called backup_device(ip, credentials) and call it in a loop for each device.
   • BWrite a separate script for each device to avoid mixing credentials.
   • CUse a global variable for the current device and update it before each backup block.
   • DWrite the backup logic once and use copy-paste with different IPs.
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2. 22application · medium

   A team is building a Python application that includes functions for SNMP polling, SSH command execution, and data parsing. The functions are currently all in one large file, and multiple developers are working on different parts. They want to avoid merge conflicts and allow each developer to work independently. What is the best way to organize the code?

   • ACreate a class for each function and put all classes in the same file.
   • BKeep all functions in one file but use version control branches for each developer.
   • CUse global variables to share data between functions and avoid passing parameters.
   • DSplit the functions into separate modules based on functionality (snmp.py, ssh.py, parser.py) and import them where needed.
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4. 23expert · hard

   A network automation team maintains a Python application that uses a module named config_parser.py. This module is imported by several other modules. Recently, a developer added a new function to config_parser.py that has the same name as a function in another module, and the application started behaving unexpectedly. The team suspects a naming conflict. What is the best way to prevent this issue while preserving the ability to use both functions?

   • ARename the function in config_parser.py to a unique name.
   • BUse import aliasing, such as import config_parser as cp, and call cp.function_name() to avoid ambiguity.
   • CCombine both modules into a single module to eliminate the conflict.
   • DUse a global variable to store the function reference and override it when needed.
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5. 24expert · hard

   A network automation team is refactoring a legacy script into a maintainable codebase. The script currently uses global variables extensively, making it difficult to trace which function modifies a given variable. The team wants to improve debugging and reduce unexpected side effects. Which refactoring approach is most effective?

   • AAdd more comments to explain what each global variable is used for.
   • BEncapsulate related data and functions into classes, passing data explicitly through method parameters and return values.
   • CMove all global variables into a single configuration module.
   • DRename global variables to be more descriptive.
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6. 25foundation · easy

   A developer creates a class named 'Router' to represent network devices. Which benefit does this class provide in terms of code organization?

   • AIt automatically generates documentation for the code.
   • BIt eliminates the need for any functions in the program.
   • CIt allows the code to run on any platform without modification.
   • DIt groups related data and behaviors into a single reusable template.
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