6.3 Describe the High-Level Principles and Benefits of a Data Modeling Language, Such as YANG 350-401 Practice Questions (Page 8)

Questions 36–38

1. 36expert · hard

   A service provider manages a multi-vendor network and wants to offer customers a self-service portal for configuring VPN services. The portal must support different device models and ensure that configurations are validated before deployment. The team is considering using YANG models with NETCONF. Which approach best addresses the need for vendor neutrality and validation?

   • AUse a single vendor's YANG module for all devices and translate it to other vendors' CLI commands.
   • BUse SNMP to configure all devices and rely on the device's native validation.
   • CDevelop a custom YANG module that abstracts the common VPN configuration and map it to vendor-specific modules.
   • DCreate a Python script that uses vendor-specific NETCONF modules for each device type.
   Reveal Solution Discussion Select an answer first
2. 37foundation · easy

   How does a YANG module define a data model?

   • ABy describing the physical layout of the data center.
   • BBy declaring a set of nodes (containers, lists, leaves) and their relationships within the module.
   • CBy providing a list of commands to execute on the device.
   • DBy specifying the exact IP addresses of all network devices.
   Reveal Solution Discussion Select an answer first
3. 38foundation · easy

   How does YANG enable programmatic network management?

   • ABy automatically generating Python code for network devices.
   • BBy replacing the need for network protocols with direct database access.
   • CBy providing a structured data model that automation tools can read and manipulate via APIs like NETCONF/RESTCONF.
   • DBy providing a command-line interface for scripting.
   Reveal Solution Discussion Select an answer first