Which of the following methods is invoked by the AWT package to support paint and repaint operations?

• A) repaint( )
• B) redraw( )
• C) paint( )
• D) draw( )

Which of the following is the correct syntax to make a PersonInfo class into a Serializable class?

• A) public class PersonInfo extends Serializable { /* class body */}
• B) public class PersonInfo implements Serializable { /* class body */}
• C) public class PersonInfo includes Serializable { /* class body */}
• D) public class PersonInfo imports Serializable { /* class body */}

What is the purpose of the transient keyword in Java serialization?

• A) It indicates that a class cannot be serialized.
• B) It indicates that an object cannot be serialized.
• C) It indicates that a variable should not be serialized.
• D) It indicates that a method cannot be serialized.

What happens when you call the repaint() method on a Swing component?

• A) The component's size is adjusted to fit its contents.
• B) The component is moved to a different location in the GUI.
• C) The component is immediately removed from the GUI.
• D) The component is marked for repainting and will be redrawn by the system.

Which of the following methods takes the place of constructor in an Applet?

• A) init()
• B) run()
• C) start()
• D) main()

Assume that we do not want to serialize phoneNum attribute of PersonInfo class, this can be done by:

• A) client String phoneNum;
• B) serializable String phoneNum;
• C) server String phoneNum;
• D) transient String phoneNum;

An applet is basically a/an _____________ that allows interaction with a Java program.

• A) Frame
• B) Label
• C) Window
• D) Panel

Socket is a ___________ commnunication channel between hosts.

• A) uni-directional
• B) tri-directional
• C) multi-directional
• D) bi-directional

Which of the following methods of Graphics object is used to draw rectangle?

• A) DrawRect(10,10,20,20);
• B) DrawReactangle(10,10,20,20);
• C) drawReactangle(10,10,20,20);
• D) drawRect(10,10,20,20);

Which method is called first when an applet is loaded?

• A) start()
• B) stop()
• C) init()
• D) destroy()

Which of the following statements is true regarding paintChildren() method?

• A) It tells any components contained by this component to paint themselves.
• B) It first paints the background and then performs custom painting.
• C) It first performs custom painting and then paints the background.
• D) It tells the component to paint its border.

Which of the given will clear all the previous painting?

• A) super.repaint()
• B) super.redraw()
• C) super.paintComponent()
• D) super.paint()

Which keyword is used in Java to mark fields that should not be serialized?

• A) static
• B) transient
• C) volatile
• D) final

How many ports are available for TCP socket?

• A) 128k
• B) 128
• C) 64k
• D) 64

HTTP works on port _________.

• A) 80
• B) 84
• C) 21
• D) 23

Timer class constructor requires time in _______________.

• A) milli seconds
• B) nano seconds
• C) micro seconds
• D) seconds

An applet can be defined as:

• A) A small program written in JSF and included in an HTML page
• B) A small program written in Java and included in an HTML page
• C) A small program written in JSP and included in an HTML page
• D) A small program written in Servlet and included in an HTML page

Which method of ServerSocket class is used to accept incoming client connections in Java?

• A) bind()
• B) accept()
• C) connect()
• D) open()

To serialize an object in Java, we typically use _____________________ .

• A) ObjectOutputStream
• B) ClassOutputStream
• C) ClassInputStream
• D) ObjectInputStream

setColor() is a method of ________ object.

• A) JFrame
• B) Graphics
• C) JPanel
• D) Image