3. Describe the Use and Roles of Network Simulation and Test Tools (such as Cisco Modeling Labs and pyATS) 200-901 Practice Questions (Page 3)

Questions 11–15

1. 11application · medium

   A network automation team is evaluating pyATS to replace their current manual testing process. They need a framework that supports writing tests in Python, provides libraries for parsing device outputs, and can generate reports. Which of the following is a key feature of pyATS that meets these needs?

   • ABuilt-in parsers for common Cisco commands
   • BAutomatic network topology discovery
   • CReal-time traffic generation
   • DBuilt-in configuration management
   Reveal Solution Discussion Select an answer first
2. 12foundation · easy

   Which of the following is a key feature of Cisco Modeling Labs (CML)?

   • AReal-time traffic analysis with deep packet inspection
   • BImage management for virtual network device images
   • CIntegration with physical hardware to create hybrid topologies
   • DAutomatic configuration backup of physical devices
   Reveal Solution Discussion Select an answer first
4. 13foundation · easy

   Which component of pyATS is responsible for interacting with network devices to execute commands and retrieve outputs?

   • ATestbed file
   • BConnector
   • CParser
   • DTestcase
   Reveal Solution Discussion Select an answer first
5. 14application · medium

   A network engineer is using CML to test a new firewall rule set. The engineer needs to verify that the rules work as expected by sending traffic through the simulated network. Which CML feature is most appropriate for this task?

   • AThe node auto-discovery feature to find firewall devices.
   • BThe topology export feature to share the lab.
   • CThe image management feature to add firewall images.
   • DThe built-in traffic generator and packet capture capabilities.
   Reveal Solution Discussion Select an answer first
6. 15expert · hard

   A network automation team is building a CI/CD pipeline to validate configuration changes. They have a CML environment with limited resources and need to run pyATS tests against the virtual devices. The pipeline must be able to spin up the lab, run tests, and tear down the lab automatically. However, the team also needs to preserve the lab state for debugging when tests fail. Which approach best balances automation and debuggability?

   • AUse the CML API to start the lab, run pyATS tests, and keep the lab running only if tests fail; otherwise, stop it.
   • BAlways tear down the lab after tests, regardless of outcome.
   • CUse pyATS to directly control the CML lab lifecycle.
   • DAlways keep the lab running after tests, regardless of outcome.
   Reveal Solution Discussion Select an answer first