Which of the following is NOT true about paintComponent( ) method?

• A) It performs custom painting (drawing circle, rectangles etc.)
• B) It is a main method for painting
• C) Tells the components border (if any) to paint.
• D) By default, it first paints the background

The following code creates and starts a timer that fires an action event once per ______. Timer t = new Timer (1000, this); t.start();

• A) Minute
• B) Second
• C) Hour
• D) Day

Which interface must a class implement to be serializable in Java?

• A) Serializable
• B) Externalizable
• C) SerializableObject
• D) Serialize

FTP (File Transmission Protocol) works on _________ port.

• A) 23
• B) 21
• C) 80
• D) 84

During deserialization in Java, which casting is required to recreate the original object type?

• A) Down-casting
• B) Right-casting
• C) Left-casting
• D) Up-casting

Which Java package is used for socket programming?

• A) java.net
• B) java.sql
• C) java.lang
• D) java.util

Which of the following methods is called only once during the life cycle of an Applet?

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

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

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

How many methods are there in the Serializable Interface?

• A) One
• B) Two
• C) Zero
• D) Three

In the context of Java Graphics, which of the following methods we should override while painting?

• A) paintChildern( )
• B) paintComponet( )
• C) paint( )
• D) paintBorder( )

How many simultaneous connections can be opened using TCP and UDP ports?

• A) 64
• B) 128k
• C) 64k
• D) 128

If a JPanel has a triangle drawn on it then which of the following methods will display it?

• A) paint( )
• B) paintComponet( )
• C) paintChildern( )
• D) paintBorder( )

A port is a __________________ to which processes can listen for connections request.

• A) Client Address
• B) Server Address
• C) Local Address
• D) Transport Address

Timers are constructed by specifying both a delay parameter and a/an _________ Listener.

• A) Mouse
• B) Action
• C) Key
• D) Window

Which of the following methods of an Applet is called every time when page is minimized?

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

int i = (int)( Math.random() * 5 ); // will generate random numbers between__________ .

• A) 1 & 5
• B) 0 & 4
• C) 1 & 4
• D) 0 & 5

Which method is called when an applet is about to be removed from memory?

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

If you want the timer to fire only the first time and then stop, invoke ______________.

• A) setOnce(true)
• B) setOnce(false)
• C) setRepeats(true)
• D) setRepeats(false)

TELNET works on _______ port.

• A) 23
• B) 80
• C) 84
• D) 21

How many ports are available for UDP socket?

• A) 64k
• B) 64
• C) 128k
• D) 128