Assess Spring IoC, AOP, JDBC, Security

Answer the following Spring Framework questions (some are single-choice): 1) How do you instantiate a single Spring IoC container that loads multiple configuration files and is shared across the application? 2) To log method arguments for auditing, which AOP advice should you use? Choose one: @Before, @After, @Around, or @AfterReturning. 3) When multiple beans implement the same interface, how do you inject a specific implementation? 4) What is the simplest way to inject a dependency/resource into a class in Spring? 5) What is the easiest way to map a JDBC ResultSet to a Java bean when using Spring's JdbcTemplate? 6) To connect to a MySQL database in Spring, which bean type should encapsulate the database connection? Choose one: DataSource, SQLConnector, MySqlConnector, or MySQLJDBC. 7) In a Spring MVC/REST request handler, how do you access the currently authenticated user's details for logging? 8) Using @PreAuthorize on a method, why might @PreAuthorize("hasRole('ROLE_ABC')") result in access denied, and what is the correct usage?