CS506 Web Design & Development Quiz MCQs Lecture 1-22 MidTerm Objective Questions | SUPERSTARWEBTECH

CS506 Web Design and Development MCQS OBJECTIVE QUESTIONS

CS506-Web Design & Development Quiz MCQS #Objective #Questions #Midterm

1. JDBC-ODBC stands for ___

• Java Database Connectivity-Oracle Database Connectivity
• Java Database Corporation-Open Database Corporation
• Java Database Corporation-Oracle Database Corporation
• Java Database Connectivity-Open Database Connectivity ✔

2. Which of the following operator is used to concatenate strings?

• +=
• +-
• ++
• + ✔

3. Which of the following feature does java provide?

• Operator Overloading
• Pointers
• Overriding ✔
• Multiple Inheritance

4. The following is an example of :
BufferedReader br = new BufferedReader(fr);

• Byte-Oriented Stream
• Node Stream
• Filter Stream ✔
• File Stream

5. Which of the following method is used to convert a string into an int value?

• intValue()
• parseInt()
• ParseInt()
• parseInteger() ✔

6. If there is no exception in the try block then the catch block ___ executes.

• Always
• Somtime
• Never ✔
• None

7. Java Program code is compiled into a form called ___

• Machine code
• Byte code ✔
• Native code
• Source code

8. Which of the following feature is not included in java?

• Inheritance
• Polymorphism
• Pointer manipulation ✔
• Data encapsulation

9. Which one of the following understands the byte code?

• Operating System
• Java Compiler
• Java Virtual Machine ✔
• Java Interpreter

10. Adapter classes have been defined for listener interfaces except ___ interface.

• MouseListener
• KeyListener
• WindowListener
• ActionListener ✔

11. == operator compares ___ of strings whereas equals( ) method compares ___ of strings

• Values, addresses
• Addresses, values
• Size, addresses
• Addresses, size

12. Event handling is a ___ step process

• One
• Two
• Three
• Four

13. Window, frame, and dialog use ___ as their default layout.

• Border Layout
• Flow layout
• GridBag layout
• Grid layout

14. Which of the following belongs to a category of checked exception?

• Null Pointer exception
• IOException
• Array index out of bounds
• NumberFormatException

15. All the exceptions and errors in java are inherited from ___ class.

• Exception
• Error
• Throwable
• IOException

16. If a superclass method is protected then the overriding method ___

• must be protected
• must be public
• must be private
• may be either protected or public

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

• FileWriter fw = new FileWriter("output.txt");
• FileWriter fw = new FileWriter(FileDescriptor.out);
• FileWriter fw = new FileWriter(FileDescriptor.in);
• FileWriter fw = new FileWriter(FileDescriptor);

18. Which of the following command is used to compile Java code?

• java filename
• java filename.java
• javac filename
• javac filename.java

19. AWT is a GUI package used in java, AWT stands for ___

• Apache Window Toolkit
• Application Windowing Tools
• Application Windows Template
• Abstract Windowing Toolkit

20. Java defines ___ for the listener interfaces having more than one event handling methods.

• Wrapper classes
• Abstract classes
• Concrete classes
• Adapter classes

21. Mouse events can be trapped for ___ GUI component.

• JPanel
• JFrame
• JButton
• All of the given

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

• Statement
• PreparedStatement
• CallableStatement
• None

23. Which of the following statement object is used to execute precompiled SQL statements?

• Statement
• PreparedStatement
• CallableStatement
• None of the given

24. Which of the following method is used to determine whether a database is read-only or not?

• isReadonly()
• isReadOnly()
• isreadonly()
• IsReadOnly()

25. ___components generate events.

• Only AWT
• Only Swing
• All AWT and Swing
• Not all AWT and Swing

26. Which of the following function will be used to register an event handler with events generator, where the event generator is a button?

• addAction()
• addActionListener()
• addListener()
• registerListener()

27. Which of the following syntax is used to get DataBaseMetaData object?

• DataBaseMetaData md = rs.getMetaData(); //where rs is ResultSet object
• DatabaseMetaData md = st.getMetaData(); //where st is Statement object
• DataBaseMetaData md = con.getMetaData(); //where con is Connection object
• DataBaseMetaData md = rsmd.getMetaData(); //where rsmd is ResultSetMetaData object

28. Which of the given Listener interface(s) have adopter class(s)?

• ActionListener
• AdjustmentListener
• MouseMotionListener
• ItemListener

29. There are ___steps in order to communicate successfully with database

• six
• seven
• eight
• nine

30. An event in java is represented as ___

• Operator
• Function
• Object
• Primitive data type

31. Which of the given statement objects are used to execute using same query multiple times by only changing parameters?

• Statement
• CallableStatement
• PreparedStatement
• Both b and c

32. Which of the following function is declared in MouseMotionListener interface?

• public void mousePressed(MouseEvent me);
• public void mouseDragged(MouseEvent me);
• public void mouseClicked(MouseEvent me);
• public void mouseEntered(MouseEvent me);

33. DSN stands for ___

• Data System Name
• Domain system Name
• Data Source Name
• Database System Name

34. Which of the following is a DDL statement?

• Select
• Delete
• Create
• Update