Quiznetik

J2EE Technologies | Set 1

1. It is lightweight.It supports pluggable look and feel.It follows MVC (Model View Controller) architecture. The following specifies the advantages of

A. Swing

B. AWT

C. Both A & B

D. None of the above

Correct : A. Swing

2. Swing is not a part of JFC (Java Foundation Classes) that is used to create GUI application?

A. True

B. False

C. none

D. all

Correct : A. True

3. Which class provides many methods for graphics programming?

A. java.awt

B. java.Graphics

C. java.awt.Graphics

D. None of the above

Correct : C. java.awt.Graphics

4. Implement the Listener interface and overrides its methods. Register the component with the Listener The Following steps are required to perform

A. Exception Handling

B. String Handling

C. Event Handling

D. None of the above

Correct : C. Event Handling

5. The ActionListener interface is not used for handling action events?

A. True

B. False

C. none

D. all

Correct : B. False

6. The ActionListener interface is used for handling action events,Forexample,it's used by a

A. JButton

B. JCheckbox

C. JMenuItem

D. All of these

Correct : D. All of these

7. JFramemyFrame = new JFrame (); Any command (such as the one listed above) which creates a new object of a specific class (in this case a new JFrame object called myFrame) is generally called a ...

A. Constructor

B. Layout manager

C. Parameter

D. GUI

Correct : A. Constructor

8. MVC Architecture stands for

A. . Model View Controller

B. . Mode View Control

C. . Maximum View Control

D. . None

Correct : A. . Model View Controller

9. Which is the container that doesn't contain title bar and MenuBars but it can have other components like button, textfieldetc?

A. Window

B. Frame

C. Panel

D. all the above

Correct : C. Panel

10. Which is the passive control that do not support any interaction with the user?

A. JList

B. JLabel

C. JTable

D. JTree

Correct : B. JLabel

11. . Component used for displaying data in tabular

A. JList

B. JTextArea

C. JTable

D. JTree

Correct : C. JTable

12. Java Bean is a _____________ technology

A. Component

B. scripting

C. middle tier

D. None

Correct : A. Component

13. Manifest file is a special file that contains information about the files packed in

A. JAR file

B. GIF

C. JPEG

D. all the above

Correct : A. JAR file

14. Which of the following is not true about Java beans?

A. Implements java.io.Serializable interface

B. Extends java.io.Serializable class

C. Provides no argument constructor

D. Provides setter and getter methods for its properties

Correct : B. Extends java.io.Serializable class

15. Which file separator should be used by MANIFEST file?

A. /

B. \

C. –

D. //

Correct : A. /

16. Which of the following is correct error when loading JAR file with duplicate name?

A. java.io.NullPointerException

B. java.lang.ClassNotFound

C. java.lang.ClassFormatError

D. java.lang.DuplicateClassError

Correct : C. java.lang.ClassFormatError

17. Java Beans are extremely secured?

A. True

B. False

C. none

D. all

Correct : B. False

18. Which of the following is not a feature of Beans?

A. Introspection

B. Events

C. Persistence

D. Serialization

Correct : D. Serialization

19. Which services are provided to EJB components by the EJB container?

A. Transaction support

B. Persistence support

C. Naming support

D. All mentioned above

Correct : D. All mentioned above

20. Which case of a session bean obtains the UserTransaction object via the EJBContext using the getUserTransaction() method in EJB transaction management?

A. Bean-managed transactions

B. Container-managed transactions

C. Both A & B

D. None of the above

Correct : A. Bean-managed transactions

21. EJB QL is a Query Language provided for navigation across a network of enterprise beans and dependent objects defined by means of container managed persistence.

A. True

B. False

C. none

D. all

Correct : A. True

22. A message driven bean is like a stateful session bean that encapsulates the business logic and doesn't maintain state.

A. True

B. False

C. none

D. all

Correct : B. False

23. Abbreviate the term JMS?

A. Java Message Service

B. Java Monitor Service

C. Java Message Session

D. Java Monitor Session

Correct : A. Java Message Service

24. JMS is mainly used to send and receive message from one application to another.

A. True

B. False

C. none

D. all

Correct : A. True

25. Which session bean maintain their state between client invocations but are not required to maintain their state across server crashes or shutdowns?

A. Stateful Session Bean

B. Stateless Session Bean

C. Singleton Session Bean

D. None of the above

Correct : C. Singleton Session Bean

26. Which EJB container must provide an implementation of Java Naming and Directory Interface (JNDI) API to provide naming services for EJB clients and components?

A. Transaction support

B. Persistence support

C. Naming support

D. All mentioned above

Correct : C. Naming support

27. EJB is a specification for J2EE server, not a product; Java beans may be a graphical component in IDE.

A. True

B. False

C. none

D. all

Correct : A. True

28. A session bean represents a multiple clients inside the Application Server.

A. True

B. False

C. none

D. all

Correct : B. False

29. Which component does the Entity bean represent the persistent data stored in the database?

A. Server-side component

B. Client-side component

C. server and client side component

D. None of the above

Correct : A. Server-side component

30. EJB is like COM, Abbreviate the term COM?

A. Component Object Model

B. Component Oriented Model

C. Common Object Model

D. Common Oriented Model

Correct : A. Component Object Model

31. JMS is also known as a messaging service.

A. True

B. False

C. none

D. all

Correct : A. True

32. What represents a persistent global data from the database?

A. Entity Bean

B. Session Bean

C. Both A & B

D. None of the above

Correct : A. Entity Bean

33. Which component does the Entity bean represents the persistent data stored in the database?

A. Server-side component

B. Client-side component

C. server and client side component

D. None of the above

Correct : A. Server-side component

34. In EJB, middleware services are provided by EJB Container automatically.

A. True

B. False

C. none

D. all

Correct : A. True

35. Which middleware services are provided by EJB?

A. Security

B. Transaction Management

C. Both A & B

D. None of the above

Correct : C. Both A & B

36. Which server-side component is required to be deployed on the server?

A. EJB

B. RMI

C. Both A & B

D. None of the above

Correct : A. EJB

37. Which type of instances retain no data or conversational state for a specific client?

A. Message-Driven Bean

B. Session Bean

C. Entity Bean

D. None of the above

Correct : A. Message-Driven Bean

38. EJB technology is built on the top of Socket Programming

A. True

B. False

C. none

D. all

Correct : B. False

39. How constructor can be used for a servlet?

A. Initialization

B. Constructor function

C. Initialization and Constructor function

D. Setup() method

Correct : C. Initialization and Constructor function

40. Can servlet class declare constructor with ServletConfig object as an argument?

A. True

B. False

C. none

D. all

Correct : B. False

41. Java Servletsare efficient and powerful solution for creating .......................for the web.

A. dynamic content

B. static content

C. hardware

D. both and b

Correct : A. dynamic content

42. ..................... is the first phase of the servlet life cycle.

A. Initialization

B. Service

C. Destruction

D. Both a and b

Correct : A. Initialization

43. The service phase of the servlet life cycle represents all interactions with requests until the servlet is ......................

A. created

B. running

C. initiated

D. destroyed

Correct : D. destroyed

44. GET methods are great for sending ....................amounts of information that you do not mind having visible in a URL.

A. negligible

B. huge

C. small

D. both and b

Correct : C. small

45. Several vendors are adding ...................... to their existing database .................

A. JDOBC, middle-ware products

B. JDBC drivers, upper-ware products

C. middle-ware products, JDOBC drivers

D. JDBC drivers, middle-ware products

Correct : D. JDBC drivers, middle-ware products

46. Which of the following code is used to get an attribute in a HTTP Session object in servlets?

A. session.getAttribute(String name)

B. session.alterAttribute(String name)

C. session.updateAttribute(String name)

D. session.setAttribute(String name)

Correct : A. session.getAttribute(String name)

47. A servlet needs to acquire a data source through a JNDI naming lookup. Which of the following is the best place to do this?

A. Constructor

B. init method

C. service method

D. doGet method

Correct : B. init method

48. What's the difference between servlets and applets? a. Servlets executes on Servers, where as

A. Applets executes on Browser

B. Servlets have no GUI, where as an Applet has GUI

C. Servlets creates static web pages, where as Applets creates dynamic web pages

D. Servlets can handle only a single request, where as Applet can handle multiple requests

Correct : A. Applets executes on Browser

49. Which of the following code retrieves the body of the request as binary data?

A. DataInputStream data = new InputStream()

B. DataInputStream data = response.getInputStream()

C. DataInputStream data = request.getInputStream()

D. DataInputStream data = request.fetchInputStream()

Correct : C. DataInputStream data = request.getInputStream()

50. When destroy() method of a filter is called?

A. The destroy() method is called only once at the end of the life cycle of a filter

B. The destroy() method is called after the filter has executed doFilter method

C. The destroy() method is called only once at the begining of the life cycle of a filter

D. The destroyer() method is called after the filter has executed

Correct : A. The destroy() method is called only once at the end of the life cycle of a filter

51. Which of the following is true about servlets?

A. Servlets execute within the address space of web server

B. Servlets are platform-independent because they are written in java

C. Servlets can use the full functionality of the Java class libraries

D. Servlets execute within the address space of web server, platform independent and uses the functionality of java class libraries

Correct : D. Servlets execute within the address space of web server, platform independent and uses the functionality of java class libraries

52. Which method is used to specify before any lines that uses the PrintWriter?

A. setPageType()

B. setContextType()

C. setContentType()

D. setResponseType()

Correct : C. setContentType()

53. Which of the following are the session tracking techniques?

A. URL rewriting, using session object, using response object, using hidden fields

B. URL rewriting, using session object, using cookies, using hidden fields

C. URL rewriting, using servlet object, using response object, using cookies

D. URL rewriting, using request object, using response object, using session object

Correct : B. URL rewriting, using session object, using cookies, using hidden fields

54. The getSession() method with „true‟ as its parameter [ getSession(true) ] it will return the appropriate session object when

A. the session is completed

B. the session object is passed to another method

C. the session does not exists

D. the session is existing

Correct : D. the session is existing

55. A servlet maintain session in

A. Servlet container

B. Servlet context

C. Servlet request heap

D. Servlet response heap

Correct : B. Servlet context

56. Servlet mapping defines

A. an association between a URL pattern and a servlet

B. an association between a URL pattern and a request page

C. an association between a URL pattern and a response page

D. All of the above

Correct : A. an association between a URL pattern and a servlet

57. The life cycle of a servlet is managed by

A. servlet context

B. servlet container

C. the supporting protocol (such as http or https)

D. all of the above

Correct : B. servlet container

58. The init parameter name and value pairs that are defined in web.xml file are handled by

A. ServletConfig object

B. ServletContext object

C. ServletRequest object

D. ServletResponse object

Correct : A. ServletConfig object

59. How many ServletContext objects are available for an entire web application?

A. One each per servlet

B. One each per request

C. One each per response

D. Only one

Correct : D. Only one

60. Which of the following package contains servlet classes?

A. javax.servlet

B. javax.servlet.http

C. Both of the above

D. None of the above

Correct : C. Both of the above

61. Which page directive should be used in JSP to generate a PDF page?

A. contentType

B. generatePdf

C. typePDF

D. contentPDF

Correct : A. contentType

62. Which tag should be used to pass information from JSP to included JSP?

A. Using <%jsp:page> tag

B. Using <%jsp:param> tag

C. Using <%jsp:import> tag

D. Using <%jsp:useBean> tag

Correct : A. Using <%jsp:page> tag

63. Application is instance of which class?

A. javax.servlet.Application

B. javax.servlet.HttpContext

C. javax.servlet.Context

D. javax.servlet.ServletContext

Correct : D. javax.servlet.ServletContext

64. _jspService() method of HttpJspPage class should not be overridden.

A. True

B. False

C. none

D. all

Correct : A. True

65. Which option is true about session scope?

A. Objects are accessible only from the page in which they are created

B. Objects are accessible only from the pages which are in same session

C. Objects are accessible only from the pages which are processing the same request

D. Objects are accessible only from the pages which reside in same application

Correct : B. Objects are accessible only from the pages which are in same session

66. Default value of autoFlush attribute is?

A. true

B. false

C. none

D. all

Correct : A. true

67. Which one is the correct order of phases in JSP life cycle?

A. Initialization, Cleanup, Compilation, Execution

B. Initialization, Compilation, Cleanup, Execution

C. Compilation, Initialization, Execution, Cleanup

D. Cleanup, Compilation, Initialization, Execution

Correct : C. Compilation, Initialization, Execution, Cleanup

68. “request” is instance of which one of the following classes?

A. Request

B. HttpRequest

C. HttpServletRequest

D. ServletRequest

Correct : C. HttpServletRequest

69. Which is not a directive?

A. include

B. page

C. export

D. useBean

Correct : C. export

70. Which is mandatory in tag?

A. id, class

B. id, type

C. type, property

D. type,id

Correct : A. id, class

71. Which one of the following is correct for directive in JSP?

A. <%@directive%>

B. <%!directive%>

C. <%directive%>

D. <%=directive%>

Correct : A. <%@directive%>

72. Which of the following action variable is used to include a file in JSP?

A. jsp:setProperty

B. jsp:getProperty

C. jsp:include

D. jsp:plugin

Correct : C. jsp:include

73. Which attribute uniquely identification element?

A. ID

B. Class

C. Name

D. Scope

Correct : A. ID

74. “out” is implicit object of which class?

A. javax.servlet.jsp.PrintWriter

B. javax.servlet.jsp.SessionWriter

C. javax.servlet.jsp.SessionPrinter

D. javax.servlet.jsp.JspWriter

Correct : D. javax.servlet.jsp.JspWriter

75. Which object stores references to the request and response objects?

A. sessionContext

B. pageContext

C. HttpSession

D. sessionAttribute

Correct : B. pageContext

76. What temporarily redirects response to the browser?

A. <jsp:forward>

B. <%@directive%>

C. response.sendRedirect(URL)

D. response.setRedirect(URL)

Correct : C. response.sendRedirect(URL)

77. Which tag is used to set a value of a JavaBean?

A. <c:set>

B. <c:param>

C. <c:choose>

D. <c:forward>

Correct : A. <c:set>

78. Can <!–comment–> and <%–comment–%> be used alternatively in JSP?

A. True

B. False

C. none

D. all

Correct : B. False

79. Java code is embedded under which tag in JSP?

A. Declaration

B. Scriptlet

C. Expression

D. Comment

Correct : B. Scriptlet

80. Which of the following is not a directive in JSP?

A. page directive

B. include directive

C. taglib directive

D. command directive

Correct : D. command directive

81. In RMI Architecture which layer Intercepts method calls made by the client/redirects these calls to a remote RMI service?

A. Stub & Skeleton Layer

B. Application Layer

C. Remote Reference Layer

D. Tr

Correct : A. Stub & Skeleton Layer

82. Which is an object, acts as a gateway for the client side, all the outgoing requests are routed through it and it resides at the client side and represents the remote object?

A. Stub

B. Skeleton

C. Both A & B

D. None of the above

Correct : A. Stub

83. Java supports RMI, RMI Stands for?

A. Random Method Invocation

B. Remote Memory Interface

C. Remote Method Invocation

D. Random Method Invocation

Correct : C. Remote Method Invocation

84. An RMI Server is responsible for _______

A. Creating an instance of the remote object

B. Exporting the remote object

C. Binding the instance of the remote object to the RMI registry

D. All mentioned above

Correct : B. Exporting the remote object

85. Abbreviate the term DGC?

A. Digital Garbage Collection

B. Distributed Garbage Collection

C. Distributed Garbage Connection

D. None of the above

Correct : B. Distributed Garbage Collection

86. RMI and EJB, provides services to access an object running in another JVM (known as remote object).

A. True

B. False

C. none

D. all

Correct : A. True

87. In RMI, the objects are passed by _____.

A. Value

B. Reference

C. Value and Reference

D. None of the above

Correct : A. Value

88. RMI uses a layered architecture; each of the layers could be enhanced or replaced without affecting the rest of the system.

A. True

B. False

C. none

D. all

Correct : A. True

89. What are the exceptions which have to be handled in a RMI client program?

A. RemoteException

B. NotBoundException

C. MalFormedURLException

D. All mentioned above

Correct : D. All mentioned above

90. RMI is a server-side component; It is not required to be deployed on the server.

A. True

B. False

C. none

D. all

Correct : B. False

91. Which package is used for Remote Method Invocation (RMI)?

A. java.lang.rmi

B. java.lang.reflect

C. java.applet

D. java.rmi

Correct : D. java.rmi

92. Which program obtains a remote reference to one or more remote objects on a server and then invokes methods on them in an RMI application?

A. Server

B. Client

C. Both A & B

D. None of the above

Correct : B. Client

93. Which objects are used by RMI for communicating with the remote object?

A. Stub

B. Skeleton

C. Both A & B

D. None of the above

Correct : C. Both A & B

94. RMI Architecture consists of how many layers?

A. 5

B. 3

C. 4

D. 2

Correct : C. 4

95. Which method in naming class specifies a name to the remote object?

A. bind(string name)

B. rebind(string name)

C. Both A & B

D. None of the above

Correct : A. bind(string name)

96. 1099 is the default port used by RMI Registry.

A. True

B. False

C. none

D. all

Correct : A. True

97. RMI uses which protocol on top of TCP/IP (an analogy is HTTP over TCP/IP)?

A. Java Remote Method Protocol (JRMP)

B. Internet Inter-ORB Protocol (IIOP)

C. Jinni Extensible Remote Invocation (JERI)

D. All mentioned above

Correct : A. Java Remote Method Protocol (JRMP)

98. Which method of the Naming class (found in java.rmi) is used to update the RMI registry on the server machine?

A. rebind ()

B. lookup()

C. Both A & B

D. None of the above

Correct : A. rebind ()

99. What is the built on top of the socket programming?

A. EJB

B. RMI

C. Both A & B

D. None of the above

Correct : B. RMI

100. In RMI which layer defines and supports the invocation semantics of the RMI connection and this layer maintains the session during the method call?

A. The Stub & Skeleton Layer

B. The Application Layer

C. The Remote Reference Layer

D. The Tr

Correct : A. The Stub & Skeleton Layer