Which of the following is a valid Mule router type?

• A. Single-Route
• B. Scatter-Gather
• C. Priority
• D. Fork-Join

Answer: (B)

Routing messages to multiple paths in parallel and then merging the results is what Scatter-Gather does. It’s a router pattern in Mule that fans out a message to several routes at the same time and then aggregates the responses back into a single payload for the rest of the flow. This makes it ideal when you need data from multiple independent services or processes and want to reduce overall processing time by doing those calls concurrently.

The other options don’t describe a standard Mule router pattern in this context: Single-Route isn’t a recognized router type, Priority isn’t a defined routing pattern, and while Fork-Join is a valid parallel pattern in Mule for forking and joining, the option that specifically represents a router designed to distribute work across multiple routes and then collect results is Scatter-Gather.