CCNP Practice Question: Which three statements about using Python for…

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

• ✓

  A Python script can read a YAML file containing device hostnames and IP addresses, then use that data to connect to each device and gather inventory information.

  Why this is correct

  Correct because this is a common pattern: use PyYAML to load a YAML inventory file, iterate over devices, and use Netmiko or NAPALM to collect facts.

• ✓

  The json module in Python can be used to serialize a dictionary containing device inventory data into a JSON string for storage or transmission.

  Why this is correct

  Correct because Python's built-in json module provides json.dumps() to convert Python objects (like dicts) into JSON strings, which is useful for saving inventory data or sending it to other systems.

• ✓

  CSV files can be parsed using Python's csv module to import device inventory data, such as hostname, IP, and credentials, into a script.

  Why this is correct

  Correct because the csv module allows reading and writing CSV files, which are commonly used for inventory lists in network automation.

• ✗

  YAML files in Python cannot contain comments, so all inventory data must be described without explanatory text.

  Why it's wrong here

  Incorrect because YAML supports comments using the '#' character, and Python's PyYAML library can parse files that include comments (though comments are not preserved when dumping).

• ✗

  JSON is always more human-readable than YAML for complex inventory structures.

  Why it's wrong here

  Incorrect because YAML is often considered more human-readable due to its use of indentation and less verbose syntax; JSON can be harder to read for deeply nested structures.