I'm asking myself how communication in a multi-tier SharePoint 2013 farm actually works if I should put it in a simple network schema. The farm has 1 front-end server, 1 database server, 1 search server, 1 application server and 1 Office Web Apps server
For example which servers are used when:
A user logs in into the SharePoint intranet: I assume this will have traffic between the front-end server and the database server, right?
A user performs a search query in SharePoint: (the query processing part is on the front-end server, the rest is on the search server). The call goes from the front-end to the database and the search server, right? Or are the results already in the database server?
A user opens a file in Office Web Apps: Does the SharePoint goes from the front-end directly to the web apps server with use of the database server?
These are just a few examples. Are these right and is there any documentation about this? I can't find a lot on the internet.