Capgemini Developer interview questions

Questions mainly on collections,spring,hibernate 1.Diff b/w ArrayList and LinkedList. 2.where do you store user roles for authorisation?Do you use some kind of tool for that? 3.explain session management for authentication 4.how do you execute builds using maven? 5.how to implement rest in spring 6.@Auotowired private Account ac;->will bean be created for this? 7. Scopes of beans - singleton,prototype 8.explain stages of session object