11. Interpret Basic YANG Models 200-901 Practice Questions (Page 7)

Questions 31–35

1. 31application · medium

   A network engineer is evaluating YANG for a new automation project. The project requires a formal, machine-readable description of the configuration and state of network devices, so that the same automation scripts can work across different hardware platforms. What is the primary benefit of using YANG in this scenario?

   • AIt automatically generates CLI commands for any device.
   • BIt eliminates the need for network management protocols.
   • CIt guarantees backward compatibility with all SNMP MIBs.
   • DIt provides a standardized, structured data model that separates configuration from state data.
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2. 32foundation · easy

   What is the purpose of a namespace in a YANG module?

   • ATo uniquely identify the module and avoid naming conflicts between modules
   • BTo limit the module to be used only by a specific vendor
   • CTo specify the encryption algorithm used for the module data
   • DTo define the physical location of the module file on the device
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4. 33expert · hard

   A network team is migrating from a CLI-based configuration process to an automated system. They have a mix of legacy devices that only support CLI and modern devices that support NETCONF/YANG. The team needs a single automation framework that can manage both types. Which approach is the most practical?

   • AUse a configuration management tool that supports both CLI and NETCONF/YANG, with device-specific adapters.
   • BUse SNMP for all devices because it is universally supported.
   • CUse a proprietary API from the primary vendor for all devices.
   • DUse NETCONF/YANG for all devices and require legacy devices to be upgraded.
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5. 34application · medium

   A company is building a network automation platform that must manage devices from multiple vendors. The team is deciding between using SNMP and NETCONF with YANG models. A key requirement is the ability to retrieve the configuration state and operational state using the same data model. Which approach best meets this requirement?

   • AUse RESTCONF with vendor-specific REST APIs, which are standardized across vendors.
   • BUse NETCONF with YANG models, which define both config and state data trees.
   • CUse CLI scripting with screen scraping, which naturally separates config and state.
   • DUse SNMP with MIBs, which provide a single tree for both configuration and state.
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6. 35application · medium

   A network engineer is explaining YANG to a colleague who is familiar with SNMP. The colleague asks: 'How is YANG different from an SNMP MIB?' Which statement is accurate?

   • AMIBs support CRUD operations, while YANG does not.
   • BYANG models configuration and state data, while MIBs primarily define management information for monitoring.
   • CYANG and MIBs are identical in purpose and structure.
   • DYANG is a protocol, while MIBs are data models.
   Reveal Solution Discussion Select an answer first