Match each programmability term to its most accurate description.

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In network automation and programmability, a data model defines the logical structure and organization of data elements and their relationships. It acts as a blueprint that describes how network information is represented and manipulated, enabling consistent interpretation across devices and applications. For example, YANG is a common data modeling language used in Cisco devices to define configuration and state data hierarchically. JSON (JavaScript Object Notation) is a lightweight data format used to encode data models for transmission over networks. It serializes structured data into a text format that is easy for humans to read and machines to parse. In Cisco programmability, JSON is often the payload format in RESTCONF or NETCONF APIs, allowing clients to send or receive configuration and operational data. An endpoint in the context of network programmability is a specific URL or URI that represents a resource or service exposed by a device's API. It is the target where clients send requests to retrieve or modify data. A token is a security artifact, typically a string, that clients use to authenticate and authorize access to these endpoints. Tokens ensure that only permitted users or applications can interact with the network device's programmable interfaces, maintaining security in automation workflows.

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