Quiznetik

Advanced JAVA | Set 1

1. Which of these package contains classes and interfaces for networking?

A. java.io

B. java.util

C. java.net

D. javax.swing

Correct : C. java.net

2. In the following URL, identify the protocol identifier? https://mcqmate.com:8080/course.php

A. http

B. gtu.ac.in

C. //mcqmate.com:80/course.php

D. 8080

Correct : A. http

3. Which of the following protocol follows connection less service?

A. TCP

B. TCP/IP

C. UDP

D. HTTP

Correct : C. UDP

4. Which of the following statement is NOT true?

A. TCP is a reliable but slow.

B. UDP is not reliable but fast.

C. File Transfer Protocol (FTP) is a standard Internet protocol for transmitting files between computers on the Internet over TCP/IP connections.

D. In HTTP, all communication between two computers are encrypted

Correct : D. In HTTP, all communication between two computers are encrypted

5. Which of the following statement is TRUE?

A. With stream sockets there is no need to establish any connection and data flows between the processes are as continuous streams.

B. Stream sockets are said to provide a connection-less service and UDP protocol is used

C. Datagram sockets are said to provide a connection-oriented service and TCP protocol is used

D. With datagram sockets there is no need to establish any connection and data flows between the processes are as packets.

Correct : D. With datagram sockets there is no need to establish any connection and data flows between the processes are as packets.

6. Which of the following method call is valid to obtain the server's hostname by invoking an applet?

A. getCodeBase().host()

B. getCodeBase().getHost()

C. getCodeBase().hostName()

D. getCodeBase().getHostName()

Correct : B. getCodeBase().getHost()

7. The server listens for a connection request from a client using which of the following statement?

A. Socket s = new Socket(ServerName, port);

B. Socket s = serverSocket.accept()

C. Socket s = serverSocket.getSocket()

D. Socket s = new Socket(ServerName);

Correct : B. Socket s = serverSocket.accept()

8. The client requests a connection to a server using which of the following statement?

A. Socket s = new Socket(ServerName, port);

B. Socket s = serverSocket.accept();

C. Socket s = serverSocket.getSocket();

D. Socket s = new Socket(ServerName);

Correct : A. Socket s = new Socket(ServerName, port);

9. To connect to a server running on the same machine with the client, which of the following cannotbe used for the hostname?

A. “localhost”

B. "127.0.0.1"

C. InetAddress.getLocalHost(),

D. "127.0.0.0"

Correct : D. "127.0.0.0"

10. In the socket programming, for an IP address, which can be used to find the host name and IP address of a client/ server?

A. The ServerSocket class

B. The Socket class

C. The InetAddress class

D. The Connection interface

Correct : C. The InetAddress class

11. To create an InputStream on a socket, say s, which of the following statement is necessary?

A. InputStream in = new InputStream(s);

B. InputStream in = s.getInputStream();

C. InputStream in = s.obtainInputStream();

D. InputStream in = s.getStream();

Correct : B. InputStream in = s.getInputStream();

12. Which of the following protocols is/are for splitting and sending packets to an address across a network?

A. TCP/IP

B. FTP

C. SMTP

D. UDP

Correct : A. TCP/IP

13. Which of these is a protocol for breaking and sending packets to an address across a network?

A. TCP/IP

B. DNS

C. Socket

D. Proxy Server

Correct : A. TCP/IP

14. Which of these class is used to encapsulate IP address and DNS?

A. DatagramPacket

B. URL

C. InetAddress

D. ContentHandler

Correct : C. InetAddress

15. Which of the following type of JDBC driver, is also called Type 2 JDBC driver?

A. JDBC-ODBC Bridge plus ODBC driver

B. Native-API, partly Java driver

C. JDBC-Net, pure Java driver

D. Native-protocol, pure Java driver

Correct : B. Native-API, partly Java driver

16. Which of the following type of JDBC driver, is also called Type 1 JDBC driver?

A. JDBC-ODBC Bridge plus ODBC driver

B. Native-API, partly Java driver

C. JDBC-Net, pure Java driver

D. Native-protocol, pure Java driver

Correct : A. JDBC-ODBC Bridge plus ODBC driver

17. Which of the following holds data retrieved from a database after you execute an SQL query using Statement objects?

A. ResultSet

B. JDBC driver

C. Connection

D. Statement

Correct : A. ResultSet

18. Which of the following is not a valid type of ResultSet?

A. ResultSet.TYPE_FORWARD_ONLY

B. ResultSet.TYPE_SCROLL_INSENSITIVE

C. ResultSet.TYPE_SCROLL_SENSITIVE

D. ResultSet.TYPE_BACKWARD_ONLY

Correct : D. ResultSet.TYPE_BACKWARD_ONLY

19. Which of the following type of JDBC driver, uses database native protocol?

A. JDBC-ODBC Bridge plus ODBC driver

B. Native-API, partly Java driver

C. JDBC-Net, pure Java driver

D. Native-protocol, pure Java driver

Correct : D. Native-protocol, pure Java driver

20. What is JDBC?

A. JDBC is a java based protocol.

B. JDBC is a standard Java API for database-independent connectivity between the Java programming language and a wide range of databases.

C. JDBC is a specification to tell how to connect to a database.

D. Joint Driver for Basic Connection

Correct : B. JDBC is a standard Java API for database-independent connectivity between the Java programming language and a wide range of databases.

21. Which of the following manages a list of database drivers in JDBC?

A. DriverManager

B. JDBC driver

C. Connection

D. Statement

Correct : A. DriverManager

22. Which of the following type of JDBC driver should be used if your Java application is accessing multiple types of databases at the same time?

A. Type 1

B. Type 2

C. Type 3

D. Type 4

Correct : C. Type 3

23. Which of the following is correct about JDBC?

A. JDBC architecture decouples an abstraction from its implementation.

B. JDBC follows a bridge design pattern.

C. Both of the above.

D. None of the above.

Correct : C. Both of the above.

24. Which of the following step establishes a connection with a database?

A. Import packages containing the JDBC classes needed for database programming.

B. Register the JDBC driver, so that you can open a communications channel with the database.

C. Open a connection using the DriverManager.getConnection () method.

D. Execute a query using an object of type Statement.

Correct : C. Open a connection using the DriverManager.getConnection () method.

25. Which of the following is true about JDBC?

A. The JDBC API is an API to access different relational databases.

B. You use it to access relational databases without embedding a dependency on a specific database type in your code.

C. JDBC stands for Java DataBase Connectivity.

D. All of the above.

Correct : D. All of the above.

26. How many Result sets available with the JDBC 2.0 core API?

A. 2

B. 3

C. 4

D. 5

Correct : B. 3

27. Which method is used to establish the connection with the specified url in a Driver Manager class?

A. public static void registerDriver(Driver driver)

B. public static void deregisterDriver(Driver driver)

C. public static Connection getConnection(String url)

D. public static Connection getConnection(String url,String userName,String password)

Correct : C. public static Connection getConnection(String url)

28. Which driver Network connection is indirect that a JDBC client makes to a middleware process that acts as a bridge to the DBMS server?

A. JDBC-Net

B. JDBC-ODBC bridge

C. Native API as basis

D. Native protocol as basis

Correct : A. JDBC-Net

29. JDBC RowSet is the wrapper of ResultSet,It holds tabular data like ResultSet but it is easy and flexible to use.

A. True

B. False

C. none

D. all

Correct : A. True

30. The ResultSet.next method is used to move to the next row of the ResultSet, making it the current row.

A. True

B. False

C. none

D. all

Correct : A. True

31. Which JDBC product components does the Java software provide?

A. The JDBC driver manager

B. The JDBC driver test suite

C. The JDBC-ODBC bridge

D. All mentioned above

Correct : D. All mentioned above

32. Which class has traditionally been the backbone of the JDBC architecture?

A. the JDBC driver manager

B. the JDBC driver test suite

C. the JDBC-ODBC bridge

D. All mentioned above

Correct : A. the JDBC driver manager

33. Which was the first most widely used programming interface for accessing relational databases and it offers the ability to connect all the databases on all the platforms.?

A. JDBC API

B. ODBC API

C. Both A & B

D. None of the above

Correct : B. ODBC API

34. JDBC is a Java API that is used to connect and execute query to the database

A. True

B. False

C. none

D. all

Correct : A. True

35. In the following JDBC drivers which is known as fully java driver?

A. Native-API driver

B. Network Protocol driver

C. Thin driver

D. Both B & C

Correct : D. Both B & C

36. Which JDBC drivers will run your program?

A. The JDBC-ODBC bridge

B. The JDBC driver manager

C. The JDBC driver test suite

D. None of the above

Correct : C. The JDBC driver test suite

37. What is the reason that a java program cannot directly communicate with an ODBC driver?

A. ODBC written in C# language

B. ODBC written in C language

C. ODBC written in C++ language

D. None of the above

Correct : B. ODBC written in C language

38. A leading database connectivity vendor, worked together to produce the ____.

A. JDBC-ODBC Bridge

B. JDBC Driver Test Suite

C. Both A & B

D. None of the above

Correct : C. Both A & B

39. Which driver converts JDBC calls directly into the vendor-specific database protocol?

A. Native - API driver

B. Network Protocol driver

C. Thin driver

D. Both B & C

Correct : C. Thin driver

40. Which models do the JDBC API support for the database access?

A. Two-tier models

B. Three-tier models

C. Both A & B

D. None of the above

Correct : C. Both A & B

41. Which of the following JDBC drivers is known as a partially java driver?

A. JDBC-ODBC bridge driver

B. Native-API driver

C. Network Protocol driver

D. Thin driver

Correct : B. Native-API driver

42. The JDBC API is what allows access to a data source from a Java middle tier

A. True

B. False

C. none

D. all

Correct : A. True

43. Which driver uses ODBC driver to connect to the database?

A. JDBC-ODBC bridge driver

B. Native - API driver

C. Network Protocol driver

D. Thin driver

Correct : A. JDBC-ODBC bridge driver

44. How many JDBC product components does the Java software provides?

A. 3

B. 2

C. 4

D. 5

Correct : A. 3

45. How many types of JDBC drivers are available?

A. 3

B. 4

C. 2

D. 5

Correct : B. 4

46. Which method is used for an SQL statement that is executed frequently?

A. prepareStatement

B. prepareCall

C. createStatement

D. None of the above

Correct : A. prepareStatement

47. How is the dynamic interception of requests and responses to transform the information done?

A. servlet container

B. servlet config

C. servlet context

D. servlet filter

Correct : D. servlet filter

48. Which type of ServletEngine is a server that includes built-in support for servlets?

A. Add-on ServletEngin

B. Embedded ServletEngine

C. Standalone ServletEngine

D. None of the above

Correct : C. Standalone ServletEngine

49. What type of servlets use these methods doGet(), doPost(),doHead, doDelete(), doTrace()?

A. Genereic Servlets

B. HttpServlets

C. All of the above

D. None of the above

Correct : B. HttpServlets

50. Which cookie it is valid for single session only and it is removed each time when the user closes the browser?

A. Persistent cookie

B. Non-persistent cookie

C. All the above

D. None of the above

Correct : B. Non-persistent cookie

51. Sessions is a part of the SessionTracking and it is for maintaining the client state at server side.

A. True

B. False

C. none

D. all

Correct : A. True

52. 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

53. Web server is used for loading the init() method of servlet.

A. True

B. False

C. none

D. all

Correct : A. True

54. Servlets handle multiple simultaneous requests by using threads.

A. True

B. False

C. none

D. all

Correct : A. True

55. Which method is used to send the same request and response objects to another servlet in RequestDispacher ?

A. forward()

B. sendRedirect()

C. Both A & B

D. None of the above

Correct : A. forward()

56. The sendRedirect() method of HttpServletResponse interface can be used to redirect response to another resource, it may be servlet, jsp or html file

A. True

B. False

C. none

D. all

Correct : A. True

57. Which packages represent interfaces and classes for servlet API?

A. javax.servlet

B. javax.servlet.http

C. Both A & B

D. None of the above

Correct : C. Both A & B

58. Which class can handle any type of request so that it is protocol-independent?

A. GenericServlet

B. HttpServle

C. Both A & B

D. None of the above

Correct : A. GenericServlet

59. Which HTTP Request method is non-idempotent?

A. GET

B. POST

C. Both A & B

D. None of the above

Correct : C. Both A & B

60. Which object is created by the web container at time of deploying the project?

A. ServletConfig

B. ServletContext

C. Both A & B

D. None of the above

Correct : B. ServletContext

61. What is the lifecycle of a servlet?

A. Servlet class is loaded

B. Servlet instance is created

C. init,Service,destroy method is invoked

D. All mentioned above

Correct : D. All mentioned above

62. Which method in session tracking is used in a bit of information that is sent by a web server to a browser and which can later be read back from that browser?

A. HttpSession

B. URL rewriting

C. Cookies

D. Hidden form fields

Correct : C. Cookies

63. Which are the examples of Application Server?

A. Apache

B. Tomcat

C. JBoss

D. Weblogic

Correct : C. JBoss

64. How many techniques are used in Session Tracking?

A. 4

B. 3

C. 2

D. 5

Correct : A. 4

65. In HTTP Request method Get request is secured because data is exposed in URL bar

A. True

B. False

C. none

D. all

Correct : B. False

66. In the following statements identify the disadvantages of CGI?

A. If number of clients increases, it takes more time for sending response

B. For each request, it starts a process and Web server is limited to start processes

C. It uses platform dependent language e.g. C, C++, perl

D. All mentioned above

Correct : D. All mentioned above

67. Servlet technology is used to create web application

A. True

B. False

C. none

D. all

Correct : A. True

68. Which method is used to specify before any lines that uses the PintWriter?

A. setPageType()

B. setContextType()

C. setContentType()

D. setResponseType()

Correct : C. setContentType()

69. What are functions of Servlet container?

A. Lifecycle management

B. Communication Support

C. Multithreading Support

D. All of the above

Correct : D. All of the above

70. Which object of HttpSession can be used to view and manipulate information about a session?

A. session identifier

B. creation time

C. last accessed time

D. All mentioned above

Correct : D. All mentioned above

71. Which methods are used to bind the objects on HttpSession instance and get the objects?

A. setAttribute

B. getAttribute

C. Both A & B

D. None of the above

Correct : C. Both A & B

72. Which method take a string not a URL?

A. sendRedirect

B. forward

C. Both

D. None

Correct : A. sendRedirect

73. Which of the following are interface? 1. ServletContext 2. Servlet 3. GenericServlet 4. HttpServlet

A. 1,2,3,4

B. 1,2

C. 1,2,3

D. 1,4

Correct : B. 1,2

74. 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

75. 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)

76. What is the difference between servlets and applets? i. Servlets execute on Server; Applets execute on browser ii. Servlets have no GUI; Applet has GUI iii. Servlets creates static web pages; Applets creates dynamic web pages iv. Servlets can handle only a single request; Applet can handle multiple requests

A. i, ii, iii are correct

B. i, ii are correct

C. i, iii are correct

D. i, ii, iii, iv are correct

Correct : B. i, ii are correct

77. Which are the session tracking techniques? i. URL rewriting ii. Using session object iii.Using response object iv. Using hidden fields v. Using cookies vi. Using servlet object

A. i, ii, iii, vi

B. i, ii, iv, v

C. i, vi, iii, v

D. i, ii, iii, v

Correct : B. i, ii, iv, v

78. A deployment descriptor describes

A. Web component response settings

B. Web component setting

C. Web component request objects

D. All of the above

Correct : B. Web component setting

79. The values of <servlet-name> and <servlet-class> in web.xml file

A. must be same

B. must not be same

C. may be same

D. None of the above

Correct : C. may be same

80. 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

81. Which technology do we mix our business logic with the presentation logic?

A. Servlet

B. JSP

C. Both A and B

D. None of the above

Correct : A. Servlet

82. Which attribute specifies a JSP page that should process any exceptions thrown but not caught in the current page?

A. The ErrorPage Attribute

B. The IsErrorPage Attribute

C. Both A & B

D. None of the above

Correct : A. The ErrorPage Attribute

83. The ASP and JSP technologies are quite similar in the way they support the creation of Dynamic pages, using HTML templates, scripting code and components for business logic.

A. True

B. False

C. none

D. all

Correct : A. True

84. Which of the following is an advantage of the statement – Separation of business logic from JSP ?

A. Custom Tags in JSP

B. JSP Standard Tag Library

C. All the above

D. None of the above

Correct : A. Custom Tags in JSP

85. JSPs eventually are compiled into Java servlets, you can do as much with JSPs as you can do with Java servlets.

A. True

B. False

C. none

D. all

Correct : A. True

86. JavaServer Pages often serve the same purpose as programs implemented using the Common Gateway Interface (CGI)

A. True

B. False

C. none

D. all

Correct : A. True

87. Which is the Microsoft solution for providing dynamic Web content?

A. ASP

B. JSP

C. Both A and B

D. None of the above

Correct : A. ASP

88. Which tag is used to execute java source code in JSP?

A. Declaration Tag

B. Scriptlet tag

C. Expression tag

D. None of the above

Correct : B. Scriptlet tag

89. A JSP page consists of which tags?

A. HTML tags

B. JSP tags

C. Both A & B

D. None of the above

Correct : C. Both A & B

90. Which packages does a JSP API consist of?

A. javax.servlet.jsp

B. java.servlet

C. javax.servlet.jsp.tagext

D. Both A & C

Correct : D. Both A & C

91. Which of the scripting of JSP not putting content into service method of the converted servlet?

A. Declarations

B. Scriptlets

C. Expressions

D. None of the above

Correct : C. Expressions

92. The difference between Servlets and JSP is the …………….

A. translation

B. compilation

C. syntax

D. Both A and B

Correct : C. syntax

93. Which of the following are the valid scopes in JSP?

A. request, page, session, application

B. request, page, session, global

C. response, page, session, application

D. request, page, context, application

Correct : A. request, page, session, application

94. JSP includes a mechanism for defining …………………………. or custom tags.

A. static attributes

B. local attributes

C. dynamic attributes

D. global attributes

Correct : C. dynamic attributes

95. Why DB connections are not written directly in JSPs?

A. Response is slow

B. Not a standard J2EE architecture

C. Load Balancing is not possible

D. Both B and C

Correct : D. Both B and C

96. Which is not a directive?

A. include

B. page

C. export

D. taglib

Correct : C. export

97. Which http method send by browser that asks the server to get the page only?

A. get

B. option

C. put

D. post

Correct : A. get

98. 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 : B. Using <%jsp:param> tag

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

A. True

B. False

C. none

D. all

Correct : A. True

100. Which is not a directive?

A. include

B. page

C. export

D. useBean

Correct : C. export