Which best describes platforms or solutions that are driven by an object model, but do not use YANG?
- Model Driven Programmability
- Vender Specific Attributes
- Custom Engineering
- Structured Engineering
Explanation: Custom Engineering describes platforms or solutions that utilize custom device APIs developed when networking devices first began supporting programmatic interfaces.
While these solutions are driven by an object model to define device characteristics, they do not use YANG as their data modeling language.
The sources contrast these with Model Driven Programmability, which is a "model-based approach" that specifically utilizes standardized data models like YANG to define the syntax, semantics, and constraints of the API.
Custom engineering was often seen as a precursor to modern standards but was criticized for not supporting full functionality and requiring excessive work to translate CLI commands into proprietary, non-standard API calls.
Related exam: Modules 21 – 22: Checkpoint Exam: Programmability Answers (CCNP ENCOR v9)
