Diagram type of exam questions

I'm currently practicing an exam and came across this type of diagram:

I thought the answer was THREE broadcast domains, however the answer goes on to say that there is one router with two interfaces, therefore there are two broadcast domains, however what about the standalone guy up top? Is a broadcast domain a broadcast domain if there are more than one single user under one router?

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Comments

Jammywanks

I said three because of two users under one router, then the segment between the two routers themselfs, and then the last router with one user.

pooker

routers stop broadcasts , thats a wierd diagram though, those look like linksys and linksys equipment functions as both router/switch, but when you connect the two devices with a linksys over a trunk, it elimates a broadcast because your hooking two routers together, the ened users on one end and users on another function as there own broadcast meaning messages like arp broadcast messages etc would be reached by users within that lan but not others