Which language can be used to model configuration and state data?

Question

Options

• AJSON
• BYANG
• CXML
• DXDR

• B
  88% (22)
• C
  8% (2)
• D
  4% (1)

Explanation

YANG (Yet Another Next Generation) is specifically designed as a data modeling language for network configuration and state data, most commonly used with the NETCONF and RESTCONF protocols. It defines the structure, syntax, and semantics of network data in a hierarchical format, making it the purpose-built solution for modeling both configuration and operational state data in network management.

Why the distractors are wrong:

• JSON (A) is a data serialization/encoding format used to transmit data, not a modeling language - it can carry YANG-modeled data but cannot define the model itself.
• XML (C) is also a data representation format, not a modeling language; like JSON, it can be used to encode YANG-defined data (especially in NETCONF).
• XDR (D) (External Data Representation) is a standard for describing and encoding data used in remote procedure calls (RPC), with no specific role in network configuration modeling.

Memory Tip: Think of YANG as the blueprint (model), while JSON and XML are the building materials (encoding formats) - you need a blueprint before you can build. If a question asks about modeling network data, YANG is always your answer.

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