Deck 5: EJB, JSP, and Corba

Question 1

Which interface should be implemented by a stateful session bean if it needs to synchronize its conversational state with the transactional context?

A) javax. transaction. UserTransaction
B) javax. ejb. SessionSynchronization
C) javax. ejb. EJBContext
D) javax. transaction. TransactionContext

Answer 1

javax. ejb. SessionSynchronization

Question 2

Which of the following exceptions is thrown by the ejbLoad() method of an entity bean when the database row to be loaded is not found ?

A) NoSuchEntityException
B) EJBException
C) RemoteException
D) ObjectNotFoundException

Answer 2

NoSuchEntityException

Question 3

Which of the following is the format for EJB deployment descriptor files?

A) XML
B) XSL
C) HTML
D) Java

Answer 3

XML

Question 4

EJB is a

A) Middleware
B) Scalable component architecture
C) Component architecture to integrate legacy systems
D) All of the above.

Question 5

Which of the following EJB has no state?
i. Message-Driven Bean.
ii. BMP Entity Bean.
iii. Stateless Session Bean.
iv. Stateful Session Bean.

A) Both (I) and (II) above
B) Both (II) and (III) above
C) Both (III) and (IV) above
D) Both (I) and (III) above.

Question 6

Which of the following is true for EJB?

A) EJB is server-side component architecture for distributed applications in Java
B) EJB facilitates scalable, secure and transaction-oriented applications
C) EJB supports portability and reusability
D) All of the above.

Question 7

Which of the following EJB type has no Remote interfaces?

A) Message-Driven Bean
B) BMP Entity Bean
C) CMP Entity Bean
D) none

Question 8

Which role in EJB architecture is responsible for EJB Server?

A) EJB Deployer
B) Application Assembler
C) Network Engineer
D) Server Provider

Question 9

Which of the EJB has a passive state in its life cycle?
I. Stateless Session Bean.
II. Message-Driven Bean.
III. BMP Entity Bean.

A) Only (I) above
B) Only (II) above
C) Only (III) above
D) Both (I) and (II) above

Question 10

Which part of multi-tier enterprise application contains EJB component?

A) Application Server
B) Web Server
C) Database Server
D) Fat Client

Question 11

Which of the following distributed object technology is/are not included in Java?
I. CORBA.
II. DCOM.
III. RMI.
IV. EJB.

A) Only (I) above
B) Only (II) above
C) Only (III) above
D) Only (IV) above

Question 12

Which of the following is not a property of EJB transaction?

A) Atomicity
B) Consistency
C) Isolation
D) Distributed

Question 13

Which of the following is not true for servlet?

A) It is persistent
B) Platform independent
C) High performance
D) It is single threaded.

Question 14

Which JSP tag is used to transfer processing to another JSP page?

A) <jsp:include>
B) <jsp:forward>
C) <jsp:redirect>
D) <jsp:useBean>

Question 15

Which of the following is an approach for state maintenance in Web applications?

A) Hidden Form Field
B) URL Rewriting
C) Cookies
D) All of the above.

Question 16

Which of the following is not a container for EJB?
I. Internet Information Server.
II. Java System Application Server.
III. Tomcat.
IV. WebLogic.

A) Both (I) and (II) above
B) Both (II) and (III) above
C) Both (III) and (IV) above
D) Both (I) and (III) above.

Question 17

Which EJB usually represents persistent data?

A) Entity Bean
B) Stateless Session Bean
C) Stateful Session Bean
D) Message-Driven Bean

Question 18

Which is least visibility scope for Java bean in JSP?

A) Page
B) Session
C) Request
D) Application

Question 19

Which of the following is/are true for JSP technology?
I. It is persistent.
II. Platform independent.
III. Browser executes the code.

A) Only (I) above
B) Only (II) above
C) Both (I) and (II) above
D) Both (II) and (III) above

Question 20

Which of the following is true for JNDI?

A) Database service
B) Naming and Directory Service
C) Network Service
D) Web Service

Question 21

Which method of the request object is used to extract values of the input fields in a form when it is submitted?

A) getParameter
B) getParameterNames
C) getValues
D) putValues

Question 22

Which of the following is true for CORBA?

A) Protocol for distributed computing
B) Database specification
C) Specification for distributed objects
D) Both (c) and (d) above.

Question 23

Which EJB uses EJB-QL for query operations?

A) BMP Entity Bean
B) CMP Entity Bean
C) Session Bean
D) Message-Driven Bean

Question 24

Which of the following is true for Java Bean?

A) It can not be a GUI component
B) It never implements serializable interface
C) It has zero-argument constructor
D) It is a distributed component

Question 25

Which of the following is not true for <jsp:useBean> tag in JSP page?

A) Locates a bean instance
B) Stores object reference of the bean in a variable
C) Creates an instance if fails to locate the bean instance
D) All the above.