Set - 1

Question 6 :

What is Enterprise JavaBeans (EJB) container?

Answer :

It manages the execution of enterprise beans for J2EE applications.
Enterprise beans and their container run on the J2EE server.


Question 7 :

What is in-memory replication?

Answer :

The process by which the contents in the memory of one physical m/c are replicated in all the m/c in the cluster is called in-memory replication.


Question 8 :

What is Ripple Effect?

Answer :

The process of propagating the changes in the properties of a server group during runtime to all the associated clones is called Ripple Effect.


Question 9 :

What is a Clone?

Answer :

The copies of a server group are called Clones. But unlike a Server Group Clones are associated with a node and are real server process running in that node.


Question 10 :

What are the types of Scaling?

Answer :

There are two types of scaling: Vertical Scaling and Horizontal Scaling.
Vertical Scaling - When multiple server clones of an application server are defined on the same physical m/c, it is called Vertical Scaling. The objective is to use the processing power of that m/c more efficiently.
Horizontal Scaling - When Clones of an application server are defined on multiple physical m/c, it is called Horizontal Scaling. The objective is to use more than one less powerful m/c more efficiently.