Which of the following is true regarding YANG?

YANG is indeed an IETF standard defined by a series of Request for Comments (RFCs). It is primarily used for data modeling in network management applications. YANG allows for the definition of data structures that can be used to configure, manage, and monitor devices in a network. Its standardization by the IETF ensures broad interoperability and consistency across different network devices and protocols.

This standardization is beneficial because it allows network operators and software developers to utilize YANG models in various environments without being constrained by vendor-specific implementations. This means YANG can be applied across diverse platforms and technologies, not limited to any proprietary systems.

Furthermore, YANG supports the creation of applications that use protocols like NETCONF and RESTCONF for managing network devices, which is essential in modern network automation. The flexibility and standardization of YANG make it a critical element in contemporary network management practices.