Which statement about SOAP is true?

The statement about SOAP being true is that it works over numerous protocols. SOAP (Simple Object Access Protocol) is a protocol specification for exchanging structured information in the implementation of web services. It is designed to be used over various transport protocols such as HTTP, SMTP, TCP, and more, which gives it the versatility to function in different networking environments.

SOAP is fundamentally built on XML, and while it can work with various messaging protocols, its ability to do so over multiple transport layers makes it a flexible choice for service-oriented architectures. This versatility in protocol utilization is one of the key strengths of SOAP, enabling developers to adopt it in diverse system integrations.

In contrast to this, SOAP does not inherently rely on JSON; instead, it primarily uses XML for message formatting. Although standards exist, one could argue about whether SOAP can be considered "standards-based" in the same way as RESTful APIs, as interoperability and ease of use can vary. Additionally, SOAP messages, which can be quite heavy due to their XML format, are generally not recognized as "extremely fast", especially when compared to lighter-weight alternatives like REST that use JSON.