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  De Thi Ly Thuyet Distributed Computing in Java_Tran Dinh Can

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Bài gửiTiêu đề: De Thi Ly Thuyet Distributed Computing in Java_Tran Dinh Can     De Thi Ly Thuyet Distributed Computing in Java_Tran Dinh Can  I_icon_minitimeThu 12 Jan - 12:22:26

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DCJ - Ð? thi lý thuy?t 02

1. Which of the following objects of MVC architecture represents all the data and the various states of the component?

Model *
View *
Controller *
All of the above.

2. Which of the following is not a type of Container?

Top-level
Bottom-level
General-purpose
None of the above.*

3. The JToolBar has a method _________ which can be used to make the edges of the toolbar buttons invisible.

JFileChooser
setRollover()
addSepartor()


4. The _________ method is used to set the current color of the color chooser.

setColor()
SETCOLOR()
Setcolor()

5. The methods isSelectedIndex() and isSelectionEmpty() are members of the ________ class.

JColor
JList
Jbox

6. The ______ method of JComboBox is used to retrieve the item at the specified index.

insertItemAt()
getItemAt()
removeItemAt()

7. The getMaximumRowCount() method of __________ is used to retrieve the maximum number of items the combo box can display without a scrollbar.

JList
JColorChooser
JComboBox

8. In JTable, headers and footers can be specified with an object of____________ class.

setTable
MessageFormat
TextFormat

9. The _________ class has methods to parse and convert text to a date.

SimpleDateFormat
DateFormat
DateTimeFormat

10. The ________ class cannot be instantiated as it is an abstract class.

URL connection
URL
ServerSocket class

11. The _________ method is used to retrieve the setting of the connection timeout of the URL in milliseconds.

getContentType()
getConnectTimeout()
setConnectTimeout()

12. A timeout value of zero of the setConnectTimeout() method indicates

Infinite timeout
Opening a communication link to the resource referenced
An exception raised

13. Instances of the ______ class can be used to read from and write to the resource referred by the URL.

URL
InetAddress
Connection
URLConnection *

14. An instance of the Socket class represents the _________ side of the connection.

server *
client
application
I/O

15. A ServerSocket instance binds itself to a __________ and then waits and listens for client requests to establish connections.

port *
socket
IP address
URLConnection

16. The remote object in an RMI application must extend from the _______________ class.

UnicastRemoteObject
Remote
RemoteException
UnicastServerObject

17. _________ application can be used to start the naming service on the server.

registry.exe
namingregistry.exe
rmiregistry.exe
registryservice.exe

18. The server application has to bind the remote object with a _____________ in the registry.

reference
name
remote reference
entry

19. A javax.mail.Session object can be created by invoking the static ________ method.

getInstance()
getProperties()
getSession()
initiateSession()

20. To retrieve a message from the mail server, one has to access the _________ first.

Session
Address
MIMEMessage
Store

21. __________ is the class used to contain email message.

Store
Inbox
Folder
Message

22. An instance of the ServerSocket class is used to represent the ________ side of the two-way communication.

server
client
application
I/O

23. A JFrame and a JApplet have a _______ layout by default.

Border
Card
Flow
Grid

24. Swing is a framework based on the Model-View-Controller (MVC) architecture in comparison to AWT, which was just a toolkit.

True
False

25. Which of the following describes Heavyweight components?

Platform dependent
Abstract Window Toolkit
GUI based application
Platform independent
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