1Z0-869試験無料問題集（340題）「Oracle Java Mobile Edition 1 Mobile Application Developer Certified Professional 認定」

出題：1

Which two are true about record store listeners? (Choose two.)

A. A record store can have more than one registered listener.

B. When a record store is closed, listeners are removed.

C. To listen for all events, three listeners must be registered.

D. A record store can have only one registered listener.

E. Listeners are notified if a record store is deleted.

正解：A,B 解答を投票する

出題：2

Which two are true about deleting a record store? (Choose two.)

A. Record stores accessible across MIDlet suites can never be deleted.

B. A record store can always be deleted if it is NOT open to any MIDlet in its suite.

C. Registered listeners will be notified when their record store is deleted.

D. Permission to delete a record store is independent of its authorization mode.

E. Any attempt to delete a record store can throw an exception that must be caught.

F. A record store can be deleted by any MIDlet that has access to it.

正解：D,E 解答を投票する

出題：3

When using X.509 PKI, where must a MIDlet suite's security certificates be placed?

A. in .cer files in the JAR's META-INF directory

B. inlined in the JAD, using a base64 encoding

C. in a user-defined subclass of SecurityInfo in the JAR's META-INF directory

D. inlined in the JAR manifest, using a base64 encoding

正解：B 解答を投票する

出題：4

Click the Exhibit button. The red collision rectangle around each Sprite in the image is NOT part of the actual image. The two Sprite objects intersect in the application precisely as shown. Which two are true? (Choose two.)

A. If Sprite 1 is being tested for collision with Sprite 2 using pixel-level collision detection, the two Sprite objects will NOT be in collision.

B. For the two Sprite objects to be considered in collision, collidesWith() must be invoked on both objects.

C. The most efficient way to detect collision is to use collision detection based solely on the collision rectangles.

D. For the two Sprite objects to be considered in collision, each Sprite must have no more than one frame.

正解：A,C 解答を投票する

出題：5

Click the Exhibit button.
Which two are true assuming this method is in a MIDlet? (Choose two.)

A. The user can select more than one type of chocolate.

B. Compilation fails due to a problem with code related to event handling.

C. Anonymous inner classes must NOT be used as event handlers within a MIDlet.

D. The text "You made a choice" is displayed immediately after the user makes a selection.

E. An exception occurs at runtime due to a problem related to the event handling code.

F. The Chocolate Prefs choice is never displayed to the user.

正解：A,D 解答を投票する

出題：6

Which two are true about the MIDP user interface API? (Choose two.)

A. A single Command can have both a long and a short label.

B. All UI events are sent to the application asynchronously.

C. There can be multiple Displayable objects shown on the display at the same time.

D. There can be only one Display object per MIDlet.

E. Canvas is a subclass of Screen.

F. Form is a multicast event source for CommandListener objects.

正解：A,D 解答を投票する

出題：7

Given:
12. canvas.repaint(x1,y1,wd,ht);
13. canvas.repaint(x2,y2,wd,ht);
14. canvas.serviceRepaints();
Which two are true? (Choose two.)

A. paint() is called three times, once for each repaint() and once for serviceRepaints().

B. If the two regions specified in repaint() overlap, repaint() may attempt to paint the union of the two areas.

C. serviceRepaints() blocks waiting for paint() to return.

D. paint() is always called twice, once for each repaint() request.

正解：B,C 解答を投票する

出題：8

Click the Exhibit button.
Given:
String cert = getAppProperty("MIDlet-Certificate-1-1");
What value is assigned to the cert variable when run on a MIDP 2.0 implementation?

A. The requested property value from the JAD file is assigned to cert.

B. A runtime exception will occur.

C. The application will NOT install.

D. The requested property value from the MANIFEST.MF file is assigned to cert.

正解：A 解答を投票する

出題：9

Which is the most efficient method to generate a silence between tones in a tone sequence?

A. use the constant ToneControl.SILENCE

B. use RateControl with ToneControl

C. pause playback and set volume to -1

D. stop the playback of the tone sequence and restart it

正解：A 解答を投票する

出題：10

How are labels for Command objects displayed to the user?

A. The device shows either the short or the long label.

B. Both short and long labels are always available for the user to view.

C. The long label is only for description and is never displayed.

D. The short label is always available to view, while the long label may be displayed occasionally.

正解：A 解答を投票する

出題：11

Which two are true? (Choose two.)

A. GameCanvas always needs a separate thread to draw anything on the screen.

B. Synchronous painting to the device display is possible with GameCanvas.

C. Canvas.serviceRepaints() and Canvas.callSerially() can be used to create a constant frame-rate animation loop.

D. paint() is never called for GameCanvas subclasses.

正解：B,C 解答を投票する

出題：12

Which two HttpConnection methods transition the connection to the connected state?
(Choose two.)

A. setRequestMethod

B. getRequestProperty

C. getLength

D. openInputStream

正解：C,D 解答を投票する

出題：13

Given:
1 0. //...
2 0. try {
2 1. Hashtable table = new Hashtable();
2 2. for (;;) table.put(new Object(), new Object());
2 3. } catch (OutOfMemoryException e) {
2 4. Display.getDisplay().setCurrent(new Alert("Out of Memory!"));
2 5. }
2 6. //...
Which is true?

A. Compilation fails.

B. The program hangs at line 22.

C. Out of Memory! is printed to the system console.

D. An exception is thrown at runtime but there is no guarantee an alert will be shown to the user.

正解：D 解答を投票する

出題：14

Which two are true about class file verification as defined by the CLDC specification?
(Choose two.)

A. Verification can use the same implementation as defined in the JVM specification.

B. Verification is completed at compile time and no further verification is necessary.

C. Verification can use a custom implementation.

D. Verification is NOT required.

正解：A,C 解答を投票する

出題：15

DRAG DROP
Click the Task button. Place the MIDP 2.0 classes and interfaces in the correct positions in the hierarchy.

正解：

1Z0-869試験無料問題集「Oracle Java Mobile Edition 1 Mobile Application Developer Certified Professional 認定」