Which two markup languages are supported via REST API in the Cisco SD-WAN solution?

The two markup languages supported via REST API in the Cisco SD-WAN solution are XML and JSON.

XML (eXtensible Markup Language) is widely used for its ability to represent structured data in a format that is both human-readable and machine-readable. It provides a way to define custom tags, and its hierarchical structure is beneficial for complex data representation. Cisco SD-WAN uses XML for configuration and management tasks, allowing for detailed interaction with the system.

JSON (JavaScript Object Notation) has become increasingly popular in web APIs due to its lightweight and easy-to-read format. It is particularly favored for data interchange because it is less verbose than XML, making it faster to transmit and easier for web applications to parse. In the context of Cisco SD-WAN, JSON is utilized for data representation in RESTful API calls, facilitating straightforward integration with web applications and services.

The other options incorporate markup languages that do not align with the standard practices and technical requirements of the Cisco SD-WAN REST API. CSV is primarily used for simple tabular data and lacks the hierarchical structure necessary for network configurations, while HTML is tailored for web content presentation rather than data interchange in APIs.