DevNet Associate (DEVASC) v1.0Infrastructure and AutomationHard
A network automation engineer is developing a Python application that interacts with various network devices from different vendors. The application needs to retrieve and configure network settings using a standardized, structured data model. To ensure interoperability and consistency across diverse devices, which data modeling language is best suited for defining the structure and constraints of the network configuration and operational data?
- AYANG
- BXML
- CYAML
- DJSON
Show answer & explanationAnswer & explanation
Correct answer: A. YANG
YANG (Yet Another Next Generation) is a data modeling language specifically designed for modeling configuration data, state data, RPCs, and notifications for network devices. It provides a standardized, vendor-agnostic way to define the structure and constraints of network data, enabling interoperability across different vendors and devices.
Why the other options are wrong
- B. XML is a markup language and data serialization format, but not a data modeling language like YANG that defines specific network data structures and constraints.
- C. YAML is a human-friendly data serialization standard, not a data modeling language for network devices.
- D. JSON is a data serialization format, not a data modeling language that defines structure and constraints.
YANG Data Modeling Language
YANG (Yet Another Next Generation) is a data modeling language used to define the structure, syntax, and semantics of configuration and state data, remote procedure calls (RPCs), and notifications for network devices.
- Vendor-agnostic standard for network data modeling.
- Defines data hierarchy, types, and constraints.
- Used by protocols like NETCONF and RESTCONF.
- Enhances interoperability and automation.
Memory trick: Think of YANG as the blueprint for network data, ensuring everyone speaks the same language.