6.3 Describe the High-Level Principles and Benefits of a Data Modeling Language, Such as YANG 350-401 Practice Questions (Page 1)

Questions 1–5

1. 1foundation · easy

   How does YANG organize configuration and state data?

   • AAs a hierarchical tree structure, where each node can have child nodes.
   • BAs a relational database with tables and foreign keys.
   • CAs a flat list of key-value pairs.
   • DAs a set of independent XML files without any structure.
   Reveal Solution Discussion Select an answer first
2. 2application · medium

   A company is standardizing its network automation platform. The team wants to ensure that configuration data is consistent and validated across all devices, and that the data model is not tied to a single vendor. Which benefit of using YANG directly addresses this requirement?

   • AYANG automatically generates device configuration commands from a high-level intent.
   • BYANG ensures that all network devices run the same operating system version.
   • CYANG defines a standardized, vendor-neutral data model that can be validated for consistency.
   • DYANG provides a built-in database for storing all network configurations.
   Reveal Solution Discussion Select an answer first
4. 3expert · medium

   A network team is comparing YANG-based automation with traditional CLI scripting. They need to justify the investment to management. Which benefit of YANG is most compelling for reducing operational risk?

   • AYANG models provide a formal contract that can be validated before changes are applied, reducing the chance of misconfiguration.
   • BYANG models automatically generate CLI commands for all devices.
   • CYANG models eliminate the need for network engineers to understand device configuration.
   • DYANG models guarantee that all devices will have the same feature set.
   Reveal Solution Discussion Select an answer first
5. 4foundation · easy

   In a YANG data model, which construct is used to define a collection of related nodes that can appear multiple times?

   • Aleaf-list
   • Bcontainer
   • Clist
   • Dleaf
   Reveal Solution Discussion Select an answer first
6. 5application · medium

   A network engineer must automate the configuration of access switches from multiple vendors. The current scripts use vendor-specific CLI parsing, which breaks whenever a vendor changes its output format. The engineer wants a single automation framework that can push the same logical configuration to all devices. Which approach best addresses the requirement?

   • AWrite a Python script that uses SSH and regex to parse the CLI output of each vendor and adapt the commands accordingly.
   • BUse NETCONF with YANG models to push structured configuration data that each device maps to its native CLI.
   • CDeploy a configuration management tool that uses vendor-specific modules for each device type.
   • DUse SNMP with vendor-specific MIBs to set configuration objects on each device.
   Reveal Solution Discussion Select an answer first