What type of REST request involves a source delivering data from a streaming source to a specified endpoint in Splunk?

The correct choice is based on the concept of how data is transmitted in the context of REST requests. A push request refers to a method where data is actively sent from a source to a designated endpoint. This is particularly relevant in scenarios where there is a continuous stream of data, such as real-time log data or event information that needs to be processed by Splunk. The push model allows for immediate data ingestion as new data becomes available, which is critical for applications that require timely processing and analysis of information.

In contrast, the other options do not effectively describe the active transmission of data from a source to a destination. For example, a pull request typically involves a client requesting data from a server rather than the server sending data to the client. FETCH and CONNECT can refer to different types of operations that are not specifically centered around the active delivery of streaming data to an endpoint as in the push scenario. Hence, push is the appropriate term to describe this behavior in RESTful communication within Splunk.