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MCQOPTIONS
This section includes 765 Mcqs, each offering curated multiple-choice questions to sharpen your Placement Tests knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
The flush() method of PrintStream class flushes any uncleared buffers in memory |
| A. | True |
| B. | False |
| Answer» B. False | |
| 52. |
The i18n interceptor provides multi-lingual support for your application |
| A. | True |
| B. | False |
| Answer» B. False | |
| 53. |
In RMI Distributed object applications need to |
| A. | Locate remote objects |
| B. | Communicate with remote objects |
| C. | Load class definitions for objects that are passed around |
| D. | All mentioned above |
| Answer» E. | |
| 54. |
In how many states Threads can be explained ? |
| A. | 4 |
| B. | 5 |
| C. | 3 |
| D. | 2 |
| Answer» C. 3 | |
| 55. |
Which of the following ways specify/ies to load the class files in temporary? |
| A. | By setting the classpath in the command prompt |
| B. | By classpath switch |
| C. | Both A & B |
| D. | None of the above |
| Answer» D. None of the above | |
| 56. |
What defines the method by which you can enumerate (obtain one at a time) the elements in a collection of objects? |
| A. | Stack class |
| B. | Bitset class |
| C. | Enumeration interface |
| D. | None of the above |
| Answer» D. None of the above | |
| 57. |
In which application can XML be used for marking up documents for specialized applications, such as e-commerce, scientific documents, Mathematical formula and e-books? |
| A. | Data exchange between computer systems |
| B. | Data storage |
| C. | Specialized publishing |
| D. | None of the above |
| Answer» D. None of the above | |
| 58. |
JSP’s provide better facilities for separation of page code and template data by mean of Java beans, EJBs and custom tag libraries |
| A. | True |
| B. | False |
| Answer» B. False | |
| 59. |
Constructor is like a method that is used to initialize the state of an object. It is invoked at the time of object creation |
| A. | True |
| B. | False |
| Answer» B. False | |
| 60. |
Which specification that provides runtime environment in which java byte code can be executed? |
| A. | JDK |
| B. | JVM |
| C. | JRE |
| D. | None of the above |
| Answer» C. JRE | |
| 61. |
Which is a perfect example of runtime polymorphism? |
| A. | Method overloading |
| B. | Method overriding |
| C. | Constructor overloading |
| D. | None of the above |
| Answer» C. Constructor overloading | |
| 62. |
Which method returns an enumeration of the values contained in the dictionary? |
| A. | Enumeration elements() |
| B. | Enumeration keys() |
| C. | Enumeration propertyNames() |
| D. | None of the above |
| Answer» B. Enumeration keys() | |
| 63. |
Which services are provided to EJB components by the EJB container? |
| A. | Transaction support |
| B. | Persistence support |
| C. | Naming support |
| D. | All mentioned above |
| Answer» E. | |
| 64. |
URL stands for Uniform Resource Locator and represents a resource on the World Wide Web, such as a Web page or FTP directory. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 65. |
Drivers that are JDBC Compliant should normally support scrollable result sets, but they are not required to do so. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 66. |
XML is ? |
| A. | Platform Independent |
| B. | Language Independent |
| C. | Both A & B |
| D. | None of the above |
| Answer» D. None of the above | |
| 67. |
The Java Foundation Classes (JFC) is a set of GUI components which simplify the development of desktop applications. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 68. |
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 |
| Answer» B. The IsErrorPage Attribute | |
| 69. |
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. | Container-managed transactions |
| D. | None of the above |
| Answer» B. Container-managed transactions | |
| 70. |
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. | Transport Layer |
| Answer» B. Application Layer | |
| 71. |
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 |
| Answer» B. Skeleton | |
| 72. |
Spring framework provides an difficult way to manage the dependency, It cannot be easily integrated with struts 2 framework. |
| A. | True |
| B. | False |
| Answer» C. | |
| 73. |
In order to transfer data between a database and an application written in the Java programming language, the JDBC API provides which of these methods? |
| A. | Methods on the ResultSet class for retrieving SQL SELECT results as Java types. |
| B. | Methods on the PreparedStatement class for sending Java types as SQL statement parameters. |
| C. | Methods on the CallableStatement class for retrieving SQL OUT parameters as Java types. |
| D. | All mentioned above |
| Answer» E. | |
| 74. |
A message driven bean is like statefull session bean that encapsulates the business logic and doesn't maintain state. |
| A. | True |
| B. | False |
| Answer» C. | |
| 75. |
Abbreviate the term UDA? |
| A. | Unified Data Access |
| B. | Universal Data Access |
| C. | Universal Digital Access |
| D. | Uniform Data Access |
| Answer» C. Universal Digital Access | |
| 76. |
Abbreviate the term JMS? |
| A. | Java Message Service |
| B. | Java Monitor Service |
| C. | Java Message Session |
| D. | Java Monitor Session |
| Answer» B. Java Monitor Service | |
| 77. |
Java supports RMI, RMI Stands for? |
| A. | Random Method Invocation |
| B. | Remote Memory Interface |
| C. | Remote Method Invocation |
| D. | Random Method Invocation |
| Answer» D. Random Method Invocation | |
| 78. |
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 |
| Answer» B. False | |
| 79. |
How many Result sets available with the JDBC 2.0 core API? |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 5 |
| Answer» C. 4 | |
| 80. |
Which method Drops all changes made since the previous commit/rollback? |
| A. | public void rollback() |
| B. | public void commit() |
| C. | public void close() |
| D. | public Statement createStatement() |
| Answer» B. public void commit() | |
| 81. |
Abbreviate the term DGC? |
| A. | Digital Garbage Collection |
| B. | Distributed Garbage Collection |
| C. | Distributed Garbage Connection |
| D. | None of the above |
| Answer» C. Distributed Garbage Connection | |
| 82. |
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 |
| Answer» E. | |
| 83. |
Which Error Handling in Java handles runtime errors with exceptions, If an exception is not caught in your JSP or Servlet, Resin will use a special error page to send results back to the browser, Resin uses a default error page unless you explicitly provide an error page yourself? |
| A. | Client Request Time Processing Errors |
| B. | Compilation Time Processing Errors |
| C. | JSP Translation Time Processing Errors |
| D. | None of the above |
| Answer» B. Compilation Time Processing Errors | |
| 84. |
ResultSetMetaData interface is useful because it provides methods to get metadata from the ResultSet object. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 85. |
Which constructor creates an empty string buffer with the specified capacity as length. |
| A. | StringBuffer() |
| B. | StringBuffer(String str) |
| C. | StringBuffer(int capacity) |
| D. | None of the above |
| Answer» D. None of the above | |
| 86. |
Which method can set or change the text in a Label? |
| A. | setText() |
| B. | getText() |
| C. | All the above |
| D. | None of the above |
| Answer» B. getText() | |
| 87. |
Which method is used to set the graphics current color to the specified color in the graphics class? |
| A. | public abstract void setFont(Font font) |
| B. | public abstract void setColor(Color c) |
| C. | public abstract void drawString(String str, int x, int y) |
| D. | None of the above |
| Answer» C. public abstract void drawString(String str, int x, int y) | |
| 88. |
Which is used for reading streams of raw bytes such as image data and for reading streams of characters, consider using FileReader? |
| A. | FileInputStream |
| B. | FileOutputStream |
| C. | Both A & B |
| D. | None of the above |
| Answer» B. FileOutputStream | |
| 89. |
An exception is an event, which occurs during the execution of a program that disrupts the normal flow of the program's instructions. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 90. |
JMS is mainly used to send and receive message from one application to another. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 91. |
Give the abbreviation of AWT? |
| A. | Applet Windowing Toolkit |
| B. | Abstract Windowing Toolkit |
| C. | Absolute Windowing Toolkit |
| D. | None of the above |
| Answer» C. Absolute Windowing Toolkit | |
| 92. |
Switch is more efficient than nested if or if - else in java. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 93. |
Connection Pooling Class manages no of user requests for connections to improve the performance. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 94. |
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 |
| Answer» D. None of the above | |
| 95. |
Which class is used to uncompress the file in the deflate compression format, It provides facility to the other uncompression filters? |
| A. | DeflaterOutputStream class |
| B. | InflaterInputStream class |
| C. | Both A & B |
| D. | None of the above |
| Answer» C. Both A & B | |
| 96. |
Which Exception occurs when a class is not found while dynamically loading a class using the class loaders? |
| A. | ClassNotFoundException |
| B. | ClassFoundException |
| C. | NoClassDefFoundError |
| D. | ClassDefFoundError |
| Answer» B. ClassFoundException | |
| 97. |
Which method is used to change the name of a thread? |
| A. | public String getName() |
| B. | public void setName(String name) |
| C. | public void getName() |
| D. | public String setName(String name) |
| Answer» C. public void getName() | |
| 98. |
Which can generate HTML dynamically on the client but can hardly interact with the web server to perform complex tasks like database access and image processing etc. in JSP? |
| A. | vs.Static HTML |
| B. | vs.Server-Side Includes |
| C. | vs.Pure Servlets |
| D. | Vs.JavaScript |
| Answer» E. | |
| 99. |
A package can be renamed without renaming the directory in which the classes are stored. |
| A. | True |
| B. | False |
| Answer» C. | |
| 100. |
What is known as the classes that extend Throwable class except RuntimeException and Error? |
| A. | Checked Exception |
| B. | Unchecked Exception |
| C. | Error |
| D. | None of the above |
| Answer» B. Unchecked Exception | |