6.3 Describe the High-Level Principles and Benefits of a Data Modeling Language, Such as YANG 350-401 Practice Questions (Page 4)

Questions 16–20

1. 16foundation · easy

   What is the primary purpose of a data modeling language like YANG in network management?

   • ATo encrypt configuration data to protect it from unauthorized access during transmission.
   • BTo compress configuration data to reduce bandwidth usage when sending it over the network.
   • CTo replace the need for network protocols by directly transferring configuration files between devices.
   • DTo provide a standardized, structured way to describe configuration and state data so that different systems can exchange and interpret it consistently.
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2. 17application · medium

   A network engineer is tasked with automating the configuration of 200 access switches from two different vendors. The engineer needs a single, structured way to describe the desired configuration that can be validated before being pushed to the devices. Which approach best meets this requirement?

   • AWrite a Python script that uses vendor-specific CLI commands and parses the output to verify success.
   • BCreate a spreadsheet of all configuration parameters and manually apply them to each switch using the web interface.
   • CUse YANG models to define the configuration data, then use NETCONF/RESTCONF to push and validate the configuration.
   • DDeploy a configuration management tool that uses SNMP to set configuration values on all switches.
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4. 18foundation · easy

   Which of the following is a benefit of using YANG for network configuration?

   • AIt eliminates the need for network security measures.
   • BIt automatically resolves all network outages without human intervention.
   • CIt increases network bandwidth by optimizing data flow.
   • DIt ensures configuration consistency by providing a standardized data model that can be validated before applying.
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5. 19foundation · easy

   Why is a data modeling language such as YANG important for network automation?

   • AIt allows automation tools to programmatically access and modify network configuration in a structured and predictable way.
   • BIt eliminates the need for network engineers to understand device-specific commands.
   • CIt automatically optimizes network traffic without human intervention.
   • DIt provides a graphical user interface for configuring network devices.
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6. 20foundation · easy

   What role does YANG play in the NETCONF protocol?

   • AYANG compresses NETCONF messages to reduce bandwidth usage.
   • BYANG authenticates users before NETCONF sessions are established.
   • CYANG defines the structure and constraints of the configuration and state data that NETCONF exchanges.
   • DYANG provides the transport layer for NETCONF messages.
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