McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Master of Computer Applications (MCA) .
| 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 |
| Answer» 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 |
| Answer» 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 |
| Answer» 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 |
| Answer» C. Event Handling | |
| 5. |
The ActionListener interface is not used for handling action events? |
| A. | True |
| B. | False |
| C. | none |
| D. | all |
| Answer» 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 |
| Answer» 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 |
| Answer» A. Constructor | |
| 8. |
MVC Architecture stands for |
| A. | . Model View Controller |
| B. | . Mode View Control |
| C. | . Maximum View Control |
| D. | . None |
| Answer» 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 |
| Answer» 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 |
| Answer» B. JLabel | |
| 11. |
. Component used for displaying data in tabular |
| A. | JList |
| B. | JTextArea |
| C. | JTable |
| D. | JTree |
| Answer» C. JTable | |
| 12. |
Java Bean is a _____________ technology |
| A. | Component |
| B. | scripting |
| C. | middle tier |
| D. | None |
| Answer» 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 |
| Answer» 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 |
| Answer» B. Extends java.io.Serializable class | |
| 15. |
Which file separator should be used by MANIFEST file? |
| A. | / |
| B. | \ |
| C. | – |
| D. | // |
| Answer» 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 |
| Answer» C. java.lang.ClassFormatError | |
| 17. |
Java Beans are extremely secured? |
| A. | True |
| B. | False |
| C. | none |
| D. | all |
| Answer» B. False | |
| 18. |
Which of the following is not a feature of Beans? |
| A. | Introspection |
| B. | Events |
| C. | Persistence |
| D. | Serialization |
| Answer» 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 |
| Answer» 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 |
| Answer» 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 |
| Answer» 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 |
| Answer» B. False | |
| 23. |
Abbreviate the term JMS? |
| A. | Java Message Service |
| B. | Java Monitor Service |
| C. | Java Message Session |
| D. | Java Monitor Session |
| Answer» 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 |
| Answer» 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 |
| Answer» 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 |
| Answer» 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 |
| Answer» A. True | |
| 28. |
A session bean represents a multiple clients inside the Application Server. |
| A. | True |
| B. | False |
| C. | none |
| D. | all |
| Answer» 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 |
| Answer» 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 |
| Answer» A. Component Object Model | |
| 31. |
JMS is also known as a messaging service. |
| A. | True |
| B. | False |
| C. | none |
| D. | all |
| Answer» 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 |
| Answer» 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 |
| Answer» A. Server-side component | |
| 34. |
In EJB, middleware services are provided by EJB Container automatically. |
| A. | True |
| B. | False |
| C. | none |
| D. | all |
| Answer» A. True | |
| 35. |
Which middleware services are provided by EJB? |
| A. | Security |
| B. | Transaction Management |
| C. | Both A & B |
| D. | None of the above |
| Answer» 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 |
| Answer» 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 |
| Answer» A. Message-Driven Bean | |
| 38. |
EJB technology is built on the top of Socket Programming |
| A. | True |
| B. | False |
| C. | none |
| D. | all |
| Answer» B. False | |
| 39. |
How constructor can be used for a servlet? |
| A. | Initialization |
| B. | Constructor function |
| C. | Initialization and Constructor function |
| D. | Setup() method |
| Answer» 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 |
| Answer» 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 |
| Answer» A. dynamic content | |
| 42. |
..................... is the first phase of the servlet life cycle. |
| A. | Initialization |
| B. | Service |
| C. | Destruction |
| D. | Both a and b |
| Answer» 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 |
| Answer» 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 |
| Answer» 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 |
| Answer» 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) |
| Answer» 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 |
| Answer» 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 |
| Answer» 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() |
| Answer» 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 |
| Answer» A. The destroy() method is called only once at the end of the life cycle of a filter | |
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