3. Describe the Use and Roles of Network Simulation and Test Tools (such as Cisco Modeling Labs and pyATS) 200-901 Practice Questions (Page 7)

Questions 31–35

1. 31application · medium

   A team is adopting pyATS to automate regression testing of network device configurations. They want to organize tests so that related checks are grouped together and can be executed as a single unit, while also allowing individual checks to be run independently. Which pyATS concept should they use?

   • AParser
   • BTestbed
   • CJob
   • DTestcase
   Reveal Solution Discussion Select an answer first
2. 32application · medium

   A network team is planning to test a new BGP configuration that could affect the production network. They want to validate the configuration in an isolated environment that closely mimics the production topology, without using physical hardware. Which tool is best suited for this task?

   • ApyATS
   • BAnsible
   • CCisco Modeling Labs (CML)
   • DWireshark
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4. 33foundation · easy

   A network engineer needs to test a new routing protocol implementation in a safe, isolated environment. How does Cisco Modeling Labs (CML) fulfill this need?

   • ABy capturing and replaying traffic from the production network
   • BBy automatically applying configurations to production devices after testing
   • CBy providing virtual routers and switches that can be interconnected to form a test topology
   • DBy emulating the exact hardware performance of production devices
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5. 34expert · hard

   A network engineer is tasked with validating that a new ACL is correctly blocking unwanted traffic while allowing required traffic. The engineer wants to use pyATS to automate this validation. However, the engineer is concerned about the complexity of writing test cases from scratch. Which pyATS feature can help reduce the effort?

   • AUse Genie parsers to convert ACL configurations into structured data and write assertions based on that data.
   • BUse pyATS to generate traffic and verify that it is blocked or allowed.
   • CUse pyATS to automatically configure the ACL on the devices.
   • DUse pyATS to simulate the ACL behavior without actual devices.
   Reveal Solution Discussion Select an answer first
6. 35application · medium

   A network engineer is building a CML lab to test a new VRF design. The engineer wants to use pyATS to automatically verify that VRF routes are correctly isolated between customers. What is the most efficient way to set up this testing environment?

   • AUse CML's built-in test automation to run VRF verification tests.
   • BManually configure VRF on physical routers and use pyATS to test them.
   • CBuild the VRF topology in CML, then create a pyATS testbed file that maps to the CML nodes and write testcases to verify VRF routing.
   • DUse pyATS to create the VRF topology virtually and run tests.
   Reveal Solution Discussion Select an answer first