Deck 12: Java RMI and Swing Framework

Question 1

The default layout manager of an Applet is

A)Flowlayout
B)Gridlayout
C)BorderLayout
D)BoxLayout

Answer 1

Flowlayout

Question 2

The processes that participate in supporting remote method invocation are

A)Client
B)Server
C)Object Registry
D)All of the above

Answer 2

All of the above

Question 3

Through the design mode of a builder tool, we use ___ or ____ to customize the bean.

A)Property sheet
B)Bean customizer
C)Either (a) or (c)
D)None of the above

Answer 3

Either (a) or (c)

Question 4

Swing is a ___________ framework

A)connection-based
B)component-based
C)platform-based
D)None of the above

Question 5

How many kinds of classes can be used in Java RMI?

A)One
B)Two
C)Three
D)Four

Question 6

Which method is used to enable an event for a particular object?

A)enableEvent()
B)enable()
C)enableObject()
D)enableEvents()

Question 7

How would you detect a keypress in a JComboBox?

A)Add a KeyListener to the JComboBox
B)Add a KeyListener to the JComboBox's editor component
C)Either (a) or (b)
D)None of the above

Question 8

Which Swing methods are thread-safe?

A)repaint()
B)revalidate()
C)invalidate()
D)all of the above

Question 9

Which of the following is not true?

A)The Frame class extends Window
B)The CheckboxMenuItem class extends the MenuItem class
C)JComponent is a subclass of Container
D)None of the above

Question 10

What is the correct way to write a JavaScript array?

A)var txt = new Array:1=("tim")2=("kim")3=("jim")
B)var txt = new Array(1:"tim",2:"kim",3:"jim")
C)var txt = new Array="tim","kim","jim")
D)var txt = new Array("tim","kim","jim")

Question 11

What is the correct JavaScript syntax to insert a comment that has more than one line?

A)
B)/*This comment has more than one line*/
C)//This comment has more than one line//
D)

Question 12

What is Remote method invocation (RMI)?

A)RMI allows us to invoke a method of java object that executes on another machine.
B)RMI allows us to invoke a method of java object that executes on another Thread in multithreaded programming.
C)RMI allows us to invoke a method of java object that executes parallely in same machine.
D)None of the mentioned

Question 13

Which of this package is used for remote method invocation?

A)java.applet
B)java.rmi
C)java.lang.rmi
D)java.lang.reflect

Question 14

Which of these methods are member of Remote class?

A)checkIP()
B)addLocation()
C)AddServer()
D)None of the mentioned

Question 15

Which of these Exceptions is thrown by remote method?

A)RemoteException
B)InputOutputException
C)RemoteAccessException
D)RemoteInputOutputException

Question 16

Which of this class is used for creating a client for server-client operations?

A)serverClientjava
B)Client.java
C)AddClient.java
D)ServerClient.java

Question 17

Which of this package is used for all the text related modifications?

A)java.text
B)java.awt
C)java.lang.text
D)java.text.mofify

Question 18

Which of this package contains classes and interfaces for networking?

A)java.io
B)java.util
C)java.net
D)java.network

Question 19

Which of these is superclass of ContainerEvent class?

A)WindowEvent
B)ComponentEvent
C)ItemEvent
D)InputEvent

Question 20

Which of these events is generated when the size os an event is changed?

A)ComponentEvent
B)ContainerEvent
C)FocusEvent
D)InputEvent

Question 21

Which of these methods can be used to obtain the reference to the container that generated a ContainerEvent?

A)getContainer()
B)getContainerCommand()
C)getActionEvent()
D)getContainerEvent()

Question 22

To locate a remote object with a name t at port 7000 on host panda.armstrong.edu, use

A)Remote remoteObj = Name.lookup("rmi://panda.armstrong.edu:7000/t");
B)Remote remoteObj = Name.lookup("//panda.armstrong.edu:7000/t");
C)Remote remoteObj = Name.lookup("http://panda.armstrong.edu:7000/t");
D)Remote remoteObj = Naming.lookup("rmi://panda.armstrong.edu:7000/t");

Question 23

____________ is a subinterface of java.rmi.Remote that defines the methods for the server object.

A)Server stub
B)Server implementation
C)Server object interface
D)RMI Registry

Question 24

Each remote object has a unique name identified by an URL with the protocol rmi as follows:

A)http://host:port/name
B)//host:port/name
C)http://host/name
D)rmi://host:port/name

Question 25

__________ provides the naming services for the server to register the object and for the client to locate the object.

A)Server stub
B)RMI Registry
C)Server implementation
D)Server Skeleton