Friday, 2 August 2019

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