How is the plug-in configuration file viewed from the WebSphere Application Server administrative console?

A developer informs an administrator that a servlet in one of the Web modules of a new enterprise application needs to load its own version of some common Java classes provided by WebSphere Application Server.
In order to ensure that this version of classes are only visible to the Web module, the administrator should:

When an administrator creates a JMS destination queue or topic, what configuration information must be provided in order to connect the JMS destination to a specific service integration bus (SIBus)?

In a Java EE application, how are servlets protected?

How would an administrator enable the collection of performance data by using the administrative console?

Which of the following thread pools are managed by WebSphere Application Server?

When backing up WebSphere Application Server configuration and runtime settings, which of the following commands would be relevant?

How does the administrator enable verbose garbage collection?
Use:

A new cluster member has been added to a WebSphere Application Server.
What changes will be seen in the plug-in configuration file related to this modification?

Performance of a database is degrading due an intensive database application. The administrator suspects that the JDBC connection pool is not properly tuned.
Which performance tools should the administrator use for problem determination?