6.3 Describe the High-Level Principles and Benefits of a Data Modeling Language, Such as YANG 350-401 Practice Questions (Page 5)

Questions 21–25

1. 21application · medium

   A service provider manages a multi-vendor network and wants to offer customers a self-service portal where they can request VLANs and IP addresses. The portal must validate requests before sending them to the network. Which benefit of YANG is most directly leveraged?

   • AYANG models provide built-in validation of data types and constraints before the request reaches the device.
   • BYANG models guarantee that all devices support the same features.
   • CYANG models eliminate the need for any backend logic in the portal.
   • DYANG models automatically configure the devices without any additional orchestration.
   Reveal Solution Discussion Select an answer first
2. 22application · medium

   A network engineer is using a YANG module from a vendor to configure a device. The engineer also wants to use a custom YANG module that defines an additional leaf with the same name as a leaf in the vendor module. How can the engineer avoid a naming conflict?

   • ARename the leaf in the vendor module.
   • BMerge the two modules into one.
   • CUse the same namespace but a different module name.
   • DUse a different namespace for the custom module.
   Reveal Solution Discussion Select an answer first
4. 23application · medium

   A network engineer is reviewing a YANG module that models a firewall's address objects. Each address object has a name, an IP address, and a description. The module defines a structure that can hold multiple address objects. Which YANG construct should be used to represent the address objects?

   • AA list named 'address' with a key 'name' inside a container named 'addresses'
   • BA leaf named 'address' inside a container named 'addresses'
   • CA leaf-list named 'address' inside a container named 'addresses'
   • DA container named 'address' inside a container named 'addresses'
   Reveal Solution Discussion Select an answer first
5. 24foundation · easy

   Which statement accurately describes YANG?

   • AYANG is a modular, hierarchical data modeling language used to define data models for NETCONF and RESTCONF.
   • BYANG is a database system used to store network configuration data.
   • CYANG is a scripting language used to automate network device configuration.
   • DYANG is a protocol for transferring configuration data between network devices.
   Reveal Solution Discussion Select an answer first
6. 25expert · hard

   A network architect is evaluating YANG for a new network management system. The system must support both configuration and operational state data, and it must be able to represent the relationship between them. Which YANG feature is most relevant for this requirement?

   • AYANG namespaces ensure that config and state data are in separate namespaces.
   • BYANG containers and lists provide a hierarchical structure for both config and state data.
   • CYANG types and constraints are used to define both config and state data.
   • DYANG leaf-lists can store both config and state data in the same leaf-list.
   Reveal Solution Discussion Select an answer first