A:
Data models enable data to be easily structured, grouped, and replicated to represent information related to network devices, features, and solutions.
from:
https://developer.cisco.com/docs/nx-os/#!the-nature-of-data-models
Data models enable data to be easily structured, grouped, and replicated to represent information related to network devices, features, and solutions.
https://developer.cisco.com/docs/nx-os/#!the-nature-of-data-models
As per the practice exam in: CCNP: ENCOR: 350-401: CCNP ENTERPRISE: Cisco Certified Network Professional: Implementing and Operating Cisco Enterprise Network Core Technologies (ENCOR)
YANG was developed by the IETF NETCONF Data Modeling Language Working Group (NETMOD) to be easily read by humans and as of this writing,
https://whatis.techtarget.com/definition/YANG-data-modeling-language
going for A on this one.
Human readable is classic CLI (arguably :D), data modelling languages make data readable and modifiable for systems, where structure, goruping and replication is key. You don't want to parse human-readable text for information, you want a clear structure to directly reference what you're looking for. A
If the question is about YANG, maybe D is the best answer.
Yet Another Next Generation (YANG) data modeling language.
YANG is a data modeling language used to describe configuration and operational data, remote procedure calls and notifications for network devices. The salient features of YANG are:
Human-readable format, easy to learn and represent
Supports definition of operations
Reusable types and groupings
Data modularity through modules and submodules
Supports the definition of operations (RPCs)
Well-defined versioning rules
Extensibility through augmentation
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