Web Design and Development (CS506)

1. Why we use RequestDispatcher to forward a request to another resource(servlet, html, jsp), instead of using a sendRedirect()?

   1. sendRedirect() is not supported in servlet API
   2. RequestDispatcher is not supported in servlet API
   3. RequestDispatcher is efficient and allows the server to maintain request status
   4. None of these

2. getParameters() method returns an array of strings containing the values for a specified servlet parameter.

   1. True
   2. False

3. Java Servlets are NOT automatically swtich to URL Rewriting when cookies are not supported or disaled by the client.

   1. True
   2. False

4. 3-layer architecture consists of Presentation Layer, ________ Layer and Data layer.

   1. Application
   2. Business
   3. Server
   4. Client

5. The collection API are defined in _______ package.

   1. java.io
   2. java.util
   3. java.awt
   4. java.sql

6. An instance of abstract class cannot be created.

   1. True
   2. False

7. The correct way to declare a page as an error page in JSP is:

   1. < %@page ... errorPage = "true"%>
   2. < %@page ... isErrorPage = "true"%>
   3. < %@page ... setErrorPage = "true"%>
   4. < %@page ... getErrorPage = "true"%>

8. What will happen if static modifier is removed from the signature of main method?

   1. The program does not compile
   2. The program compiles and runs successfully
   3. The program compiles but does not run
   4. None of the given

9. Presence of cookie indicates that the user is visiting this site for first time.

   1. True
   2. False

10. WindowListener interface contains __________ methods.

    1. Four
    2. Six
    3. Seven
    4. Eight

11. From the following which one is not a JSP directive?

    1. page
    2. include
    3. taglib
    4. out

12. Which of the following syntax is used to get ResultSetMetaData object?

    1. None of the given
    2. ResultSetMetaData md = rs.getMetaData();
       // where rs is ResultSet object
    3. ResultSetMetaData md = st.getMetaData();
       // where st is Statement object
    4. ResultSet md = rs.getMetaData();
       // where rs is ResultSetMetaData object

13. Which of the following method is called only once during life cycle of Servlet?

    1. service()
    2. init()
    3. destroy()
    4. start()

14. From the following methods, which method cannot be overridden in the JSP page

    1. _jspService()
    2. jspDestroy()
    3. jspInit()
    4. None of the given

15. Java developed in ________

    1. 1990
    2. 1995
    3. 1997
    4. 2000

16. JSP forward action element is used to include files at request time.

    1. True
    2. False

17. Which of the following is the correct format of writing a page directive in JSP?

    1. <%! Page{attribte="val"} %>
    2. <%@ Page{attribte="val"} %>
    3. <%# Page{attribte="val"} %>
    4. <%$ Page{attribte="val"} %>

18. If we remove String array from main then program_______

    1. Program cannot compile
    2. Program will compile and work properly
    3. Run time errors
    4. Exception throws in main

19. The correct way to define a JSP include action element is:

    1. <jsp:include page @"one.jsp"/>
    2. <jsp:include page = "one.jsp"/>
    3. <jsp:include page #"one.jsp"/>
    4. <jsp:include page $ "one.jsp"/>

20. In context of JSP custom tags, is it true that a "Tag with Body" must have one or more attributes?

    1. True
    2. False

21. The correct way to get user's session object is:

    1. HttpSession httpSession = request.getSession(true);
    2. ClientSession ClientSession = request.getSession(true);
    3. HttpSession httpSession = response.getSession(true);
    4. ClientSession ClientSession = response.getSession(true);

22. JSp directives are used to convay special processing information about the page to JSP container.

    1. True
    2. False

23. response.sendRedirect(); is a implicit object of response which redirect the browser to the different resource.

    1. True
    2. False

24. isReadOnly() is a method of _________ object.

    1. ResultSet
    2. ResultSetMetaData
    3. DataBaseMetaData
    4. Connection

25. Based on functionality, the streams can be categorized as ________

    1. Byte oriented stream and Node stream
    2. Filter stream and Character oriented stream
    3. Node stream and Filter stream
    4. Byte oriented stream and Character oriented stream

26. JSP comments are declared through following tag

    1. <%@ %>
    2. <%-- --%>
    3. <%! %>
    4. <%= %>

27. JPanel and Applet use _________ as their default layout.

    1. Flow layout
    2. Border layout
    3. Grid layout
    4. GridBag layout

28. Which of the following is a top level container?

    1. JPanel
    2. ToolBar
    3. ScrollPane
    4. Dialog

29. If a super class method is protected then overriding method _________

    1. must be protected
    2. must be public
    3. must be private
    4. may be either protected or public

30. Which of the following is called "pure abstract class"?

    1. Concrete class
    2. Wrapper class
    3. Interface
    4. Abstract class with no abstract method

31. Which one of the following is wrong while appending parameters trough url?
    Original url: http://www.abc.com:1125/servlet/pics

    1. http://www.abc.com:1125/servlet/pics/123
    2. http://www.abc.com:1125/servlet/pics?id=123
    3. http://www.abc.com:1125/servlet/pics?id(123)
    4. http://www.abc.com:1125/servlet/rewrite:$id$123

32. Is it true that a JavaBean class CAN NOT be easily reused and composed together in an application?

    1. Yes
    2. No

33. Which of the following object is passed as an argument to paintComponent() method?

    1. Image object
    2. JPanel object
    3. JFrame object
    4. Graphics object

34. There is NO equivalent tag for comments while writing JSP scripting element in XML.

    1. True
    2. False

35. Web.xml is a ___________

    1. java file
    2. configuration file
    3. jar file
    4. servlet

36. From following tags, which one is the Special JSP tag?

    1. <jsp: .…. />
    2. <%! %>
    3. <%= %>
    4. <%@ %>

37. Is it possible to provide more than one main method within same class?

    1. True
    2. False

38. Which of the following statement object is used to execute simple SQL statement?

    1. Statement
    2. PreparedStatement
    3. CallableStatement
    4. None of the given

39. Which of the following is the correct format of writing an include directive in JSP?

    1. <%! include {attribute="val"} %>
    2. <%@ include {attribute="val"}%>
    3. <%# include {attribute="val"} %>
    4. <%$ include {attribute="val"} %>

40. Which of the following methods are invoked by the AWT to support paint and repaint operations?

    1. paint( )
    2. repaint( )
    3. draw( )
    4. redraw( )

41. In the context of JSP expressions and scriptlets, pageDirective is NOT an implicit object.

    1. True
    2. False

42. Is it true that Enterprise Applications need to support multiple types of users with multiple types of interfaces?

    1. Yes
    2. No

43. Layers are isolated from each other to increase coupling between them.

    1. True
    2. False

44. In JSP scripting elements, it is NOT necessary that every opening tag also have a closing tag.

    1. True
    2. False

45. Which of the following stream read/write data in the form of bytes?

    1. FileReader
    2. FileWriter
    3. PrintWriter
    4. FileInputStream

46. A Tier represents the ________ view of application.

    1. Logical
    2. Biological
    3. Physical
    4. Local

47. In a JavaBean class, private vlues should be accessed through setters/getters.

    1. True
    2. False

48. Which of the following method call causes the currently executing thread to return to Ready state?

    1. sleep()
    2. yield()
    3. wait()
    4. None of the given

49. Which of the following Environment variable tells the system about the root directory of TOMCAT?

    1. JAva_HOME
    2. CATALINA_HOME
    3. CLASSPATH
    4. PATH

50. Which of the following statement object is used to execute stored procedures?

    1. Statement
    2. PreparedStatement
    3. CallableStatement
    4. None of the given

51. Session Tracking is NOT done through the following technique?

    1. Cookies
    2. Hidden fields
    3. Url Rewriting
    4. Session Object

52. Java defines _________ for the listener interfaces having more than one event handling methods.

    1. Wrapper classes
    2. Abstract classes
    3. Concrete classes
    4. Adapter classes

53. Which of the following stream is a Node stream?

    1. PrintWriter
    2. FileWriter
    3. BufferedReader
    4. All of the given.

54. Which of the following object is used for sharing resources among different servlets of same application?

    1. ServletConfig
    2. ServletRequest
    3. ServletResponse
    4. ServletContext

55. A variable declared as static in a class is a/an _________

    1. Instance variable
    2. Class variable
    3. Const variable
    4. Global variable

56. Is it true that a JavaBean class can have any public instance variables/attributes?

    1. Yes
    2. No

57. Which of the following syntax attaches an output stream to console?

    1. FileWriter fw = new FileWriter(“output.txt”);
    2. FileWriter fw = new FileWriter(FileDescriptor.out);
    3. FileWriter fw = new FileWriter(FileDescriptor.in);
    4. FileWriter fw = new FileWriter(FileDescriptor);

58. To define the error page in JSP we use following tag?

    1. exception-type
    2. error-type
    3. error-page
    4. exception-page

59. Java program code is compiled into a form called _______.

    1. Machine code
    2. Byte code
    3. Native code
    4. Source code

60. Which of the following object contains information specific to a servlet?

    1. ServletContext
    2. ServletConfig
    3. ServletRequest
    4. ServletResponse

61. Servlet mapping is defined in ________.

    1. servlet
    2. web.xml
    3. html
    4. JSP

62. What will happen if main method is declared as private?

    1. The program does not compile
    2. The program throws an exception at run time
    3. The program compiles and runs successfully
    4. None of the given

63. The toString () method returns a _________ representation of _______

    1. int, string
    2. string, int
    3. string, object
    4. object, string

64. JSP scripting elements is/are

    1. Declarations
    2. Scriptlets
    3. expressions
    4. All of the given.

65. From following which code can be used to create session object in the Servlet:

    1. HttpSession session = req.getSession(true);
    2. HttpSession session = req.getSession(false);
    3. HttpSession session = req.getSession(1);
    4. None of the given

66. From the following indicators; which is added in user session to know the session time out?

    1. Sessiontimeoutindicator
    2. SessionTimeOutIndicator
    3. SessionTimeoutIndicator
    4. None of these

67. Which of the following function will be used to register event handler with events generator (button)?

    1. addAction()
    2. addActionListener()
    3. addListener()
    4. None of the given

68. When defining a method you must include a ___________ to declare any exception that might be thrown but is not caught in the method.

    1. try block
    2. finally block
    3. catch block
    4. throws-clause

69. Which of the following range of response code indicates that request was successful?

    1. 100-199
    2. 200-299
    3. 300-399
    4. 400-499

70. What will happen if the String array is not provided as an argument to main method?

    1. The program does not compile
    2. The program compiles but does not run
    3. The program compiles and runs successfully
    4. None of the given.

71. Which of the following syntax is used to attach an input stream to console?

    1. FileReader fr = new FileReader(“input.txt”);
    2. FileReader fr = new FileReader(FileDescriptor.in);
    3. FileReader fr = new FileReader(FileDescriptor);
    4. FileReader fr = new FileReader(console);

72. Servlets are used to

    1. Create graphics
    2. Provide dynamic web contents which extend web servers
    3. Develop applets
    4. Create GUI

73. Relationship between JSP and servlets is

    1. Servlets are built on JSP semantics and all servlets are compiled to JSP pages for runtime usage
    2. JSP and servlets are unrelated technologies
    3. Servlets and JSP are competing technologies for handling web requests. Servlets are being superseded by JSP, which is preferred. The two technologies are not useful in combination
    4. JSPs are built on servlet semantics and all JSPs are compiled to servlets for runtime usage

74. The relationship between class and interface is called __________.

    1. Is a' relationship
    2. Has a' relationship
    3. Responds to' relationship
    4. None of the given

75. Interface can be implemented in JSP

    1. True
    2. False

76. previous() is a method of __________ object.

    1. Statement
    2. ResultSet
    3. ResultSetMetaData
    4. Connection

77. Which of the following package needs to be import while handling files?

    1. java.util
    2. java.io
    3. java.awt
    4. javax.swing

78. The method "getAttribute(String)" of HttpSession class extracts ________ stored value from a session object.

    1. Subsequently
    2. Currently
    3. Previously
    4. First

79. Packages are nothing more than the way we organize files into different directories according to their functionality, usability as well as category they should belong to:

    1. True
    2. False

80. Which of the given option is NOT true for Page-centric approach?

    1. A lot of code is also get duplicated
    2. The Maintenance of the application becomes a nightmare
    3. The code becomes a mixture of presentation, business and data access logic
    4. Scaling of such kind of application is easy

81. HahMap takes key as a/an _________

    1. Object
    2. Array
    3. Primitive value
    4. Function

82. JSP technology is extensible

    1. True
    2. False

83. Which of the following information is required by the JSP container?

    1. JSP version
    2. Tag name
    3. Tag library version
    4. All of the given.

84. A cookie is a piece of _________ that a web server can store on a client’s hard disk.

    1. Text
    2. Number
    3. String
    4. None of these

85. Which of the following approach is also called page-with-bean approach.

    1. Page-Centric approach
    2. MVC Model1
    3. MVC Model2
    4. MVC Model3

86. If a class needs to handle events generated by button then which of the following interface a class needs to implement?

    1. ComponentListener
    2. KeyListener
    3. MouseListener
    4. ActionListener

87. An error JSP is called by the web server when an uncaught exception gets occurred.

    1. True
    2. False

88. HTML form data can be processed by JSP

    1. True
    2. False

89. From following which one is the object of JspWriter used to send output to the client.

    1. request
    2. out
    3. response
    4. None of these

90. Session tracking is referred as

    1. Record maintenance of user status
    2. Record maintenance of the server
    3. Record maintenance of the client
    4. Observing security issues

91. Which of the following is the main idea behind partitioning a web application into layers?

    1. Increase Coupling
    2. Reduce Coupling
    3. Increase Decoupling
    4. Reduce Decoupling

92. A JavaBean class must have a zero argument constructor.

    1. True
    2. False

93. From the following packages which one is used to write the servlets?

    1. javax
    2. java
    3. java.util
    4. java.lang

94. A collection can store _________

    1. Homogenous objects
    2. Heterogeneous objects
    3. Objects as well as primitive values
    4. At most 100 objects

95. An event in java is represented as ________

    1. Operator
    2. Function
    3. Object
    4. Primitive data type

96. Session Tracking is done through following techniques?

    1. Cookies
    2. Hidden fields
    3. URL Rewriting
    4. All the these

97. Which of the following is used for inheritance in java?

    1. implements
    2. extends
    3. : (colon)
    4. inherit

98. A layer represents the ________ view of application.

    1. Biological
    2. Logical
    3. Local
    4. Physical

99. Which of the following is NOT a method of ResultSet object?

    1. next()
    2. absolute(int)
    3. executeQuery(sql)
    4. updateRow()

100. javax.servlet.jsp.PageContext, is used to give a __________ point of access to many of the page attributes.

     1. Single
     2. Multiple

101. Aside from the Scanner class, which of the following classes can be used for text-file input?

     1. ObjectInputStream
     2. BufferedReader
     3. StringTokenizer
     4. None of the given

102. If we remove static from main then program _______

     1. Program cannot compile
     2. Program will compile and work properly
     3. Run time errors
     4. Exception throws in main

Select a course code for Objective Questions:

ACC311 ACC501 BIF101 BIF401 BIF501 BIO101 BIO201 BIO202 BIO203 BIO204 BIO301 BIO302 BIO303 BIO401 BIO503 BNK603 BT101 BT201 BT301 BT302 BT401 BT402 BT403 BT404 BT405 BT406 BT501 BT504 BT505 BT604 CHE201 CHE301 CS001 CS101 CS201 CS202 CS204 CS301 CS302 CS304 CS311 CS401 CS402 CS403 CS408 CS501 CS502 CS504 CS506 CS508 CS601 CS602 CS604 CS605 CS607 CS609 CS610 CS614 CS707 CS710 ECO401 ECO402 ECO403 ECO404 EDU302 EDU401 EDU402 EDU501 EDU601 ENG101 ENG201 ENG301 ENG501 FIN611 FIN624 FIN625 ISL201 IT430 MCM101 MCM301 MGMT623 MGT101 MGT211 MGT301 MGT401 MGT402 MGT501 MGT502 MGT503 MGT510 MGT601 MGT603 MKT501 MKT610 MKT630 MTH101 MTH202 MTH302 MTH501 MTH601 MTH634 PAK301 PHY101 PHY301 PSY101 PSY403 PSY502 PSY512 SOC101 SOC301 SOC401 STA301 STA630 STA641 ZOO102 ZOO401 ZOO501 ZOO502 ZOO503 ZOO504 ZOO505 ZOO506 ZOO510 ZOO630

Select a course code for Subjective Questions:

ACC311 CS001 CS101 CS201 CS301 CS607 CS701 CS702 CS703 CS704 CS707 CS708 CS710 CS711 CS718 CS721 CS724 ECO401 ECO403 ENG101 ENG301 MGT703 MTH501 STA301