This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
That would depend on the architecture of your project-there is no generic answer to what appears to be an interview question. Struts itself is considered an MVC framework (when one defines MVC somewhat loosely).