3. Describe the Use and Roles of Network Simulation and Test Tools (such as Cisco Modeling Labs and pyATS) 200-901 Practice Questions (Page 9)

Questions 41–44

1. 41application · medium

   A network engineer is using CML to simulate a network with a mix of IOSv and IOS XE devices. They need to ensure that the virtual devices have the correct software images and that the topology can be exported for documentation. Which CML features should they use?

   • APacket capture and flow analysis
   • BAuto-discovery and traffic generation
   • CImage management and topology export
   • DConfiguration compliance and rollback
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2. 42application · medium

   A network engineer needs to test a new routing protocol implementation that could cause network outages if misconfigured. The engineer wants to validate the configuration in an environment that does not require physical hardware and can be easily reset. Which approach is most appropriate?

   • AUse a network monitoring tool to validate the configuration.
   • BUse CML to build a virtual topology and test the configuration.
   • CUse pyATS to simulate the routing protocol.
   • DDeploy the configuration to a staging network that mirrors production.
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4. 43expert · hard

   A network team is using CML to simulate a production-like environment. They have a pyATS test suite that was originally written for physical devices. When running the suite against CML nodes, some tests fail because the CML nodes have different interface names and slightly different show command output. What is the best strategy to adapt the tests for CML?

   • AModify the CML node images to match the physical device output exactly.
   • BUse a different test automation tool that is compatible with CML.
   • CUpdate the pyATS testbed and parser mappings to match the CML device behavior.
   • DRun the tests only on physical devices and use CML only for topology validation.
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5. 44foundation · easy

   What is the primary purpose of network test automation tools?

   • ATo generate network traffic for performance testing
   • BTo replace the need for network monitoring tools
   • CTo automatically validate that network behavior matches expected outcomes
   • DTo configure network devices in production without human intervention
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