Which two protocols can Simple Object Access Protocol (SOAP) utilize?

Simple Object Access Protocol (SOAP) is designed for communication in a networked environment and primarily leverages standard web protocols. The correct answer highlights the use of Simple Mail Transfer Protocol (SMTP) and Hypertext Transfer Protocol (HTTP) in facilitating SOAP messages.

HTTP is the most common protocol used for transmitting SOAP messages over the web. It allows for the request and response format that SOAP needs to function, which includes transmitting XML data. Furthermore, SMTP can also be utilized for sending SOAP messages in scenarios where message queuing is preferred or necessary, such as for email-based integrations.

While the other protocols mentioned, like FTP and Telnet, are not typically associated with SOAP message exchange. FTP focuses on file transfers, and Telnet is primarily used for remote command line access rather than message protocol handling. Therefore, the selection of SMTP and HTTP aligns accurately with SOAP’s operational capabilities in web services.