Clustering is used in many types of servers for high availability. Select the correct statement definition used in Clustering.

A.  App Server Cluster
An app server cluster is a group of machines that can run an application server that can be reliably utilized with a minimum of down-time.
B.  Database Server Cluster
An database server cluster is a group of machines that can run a database server that can be reliably utilized with a minimum of down-time.

Callbacks have two main limitations. The first is that only that server to which the client has already connected can call methods in a remote client object. The second is:

Which statement is correct about ServletContextListner?

Which of the following terms supports object reuse?

Which of the following connection methods is/are provided by JDBC to create statements with a desired ResultSet?

To load a servlet repeatedly, which objects will be used?

Methods that retrieve values are called ____ methods.

If a number is too large to be stored in a variable of the float type, it ________.

Exceptions can be thrown by ________.

Exception handling helps you create ________ programs.

Every event object has the _____ method that returns the object that triggered the event.