Ques 41. What are the two important TCP Socket classes?
Socket and ServerSocket.
ServerSocket is used for normal two-way socket communication. Socket class allows us to read and write through the sockets. getInputStream() and getOutputStream() are the two methods available in Socket class.
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Ques 42. What technologies are included in J2EE?
The main technologies in J2EE are: Enterprise JavaBeansTM (EJBsTM), JavaServer PagesTM (JSPsTM), Java Servlets, the Java Naming and Directory InterfaceTM (JNDITM), the Java Transaction API (JTA), CORBA, and the JDBCTM data access API.
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Ques 43. What is the difference between EJB and Java beans?
EJB is a specification for J2EE server, not a product; Java beans may be a graphical component in IDE.
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Ques 44. What is in-memory replication?
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.
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Ques 45. What is Ripple Effect?
The process of propagating the changes in the properties of a server group during runtime to all the associated clones is called Ripple Effect.