Exam 300-420 topic 1 question 148 discussion

IETF is not a YANG model per se, it is an org that creates YANG models. Question asked for a "standard YANG model"

Answer B https://blogs.cisco.com/networking/solving-multi-vendor-network-management-complexity-with-openconfig

OpenConfig for multi vendor devices.

I say B

Why do half the comments say B yet only 2 votes? People need to use the voting system more.

"standards-driven" - IETF

It's B: Openconfig.

The correct answer is B: OpenConfig For managing a multivendor network environment with a standards-driven YANG model, the engineer should choose the "OpenConfig" model. OpenConfig is an industry initiative that aims to provide a vendor-neutral and standardized YANG data model for network device configuration and monitoring. It's designed to work across different vendors' equipment and to promote interoperability in a heterogeneous network environment.

Answer is 100% B Page 387 OCG Book: OpenConfig is a group of network operators working on developing programmable interfaces and tools for managing networks in a vendor-neutral way using software-defined networking concepts and model-driven management and operations. OpenConfig focuses on building consistent sets of vendor-neutral data models written in YANG to support operational needs and requirements from various network operators

YANG is a data modeling language developed in the IETF. It is used to model configuration and state data manipulated by protocols such as NETCONF and RESTCONF. YANG enables easier management of network elements, such as routers, and is widely used and deployed by many network equipment vendors and network operators.

The YANG Model Coordination Group, for example, has been spending time on the inventory of YANG models in the industry, tooling aspects, training and education of NETCONF, YANG, pyang, and the model coordination for the IETF. OpenConfig focuses on building consistent sets of vendor-neutral data models written in YANG to support operational needs and requirements from various network operators.

According to Student learning guide and Cert Guide C is correct - where it's stating that IETF is developing and updating several YANG models - which means they are vendor independant. So C seems right.

I believe it's C. "We support a comprehensive set of IOS XR native models as well as industry-driven OpenConfig models and standards-driven IETF models" https://blogs.cisco.com/sp/advancing-your-programmability-journey-with-latest-ios-xr-innovations

I think that the answer is OpenConfig too. Pag. 387 ENSLD-420 book and https://www.cisco.com/c/en/us/products/collateral/switches/nexus-9000-series-switches/white-paper-c11-741518.html (find the word "Multivendor")

Why not OpenConfig? Openconfig support all vendors of network gear