Oracle Java Mobile Edition 1 Mobile Application Developer Certified Professional 1Z0-869 Prüfungsfragen mit Lösungen:
1. DRAG DROP
Click the Task button.
Place the classes and methods in the correct positions.
2. Given a MIDlet suite with its JAD file and a device that:
downloads and installs the JAD file
loses the network service during the download of the JAR file
What is the correct behavior of a JTWI-compliant device?
A) The server will push the MIDlet suite to the device the next time it has data network connectivity.
B) The device will try again to download the JAR file the next time it has data network connectivity.
C) The device aborts the installation and frees the space reserved for that MIDlet suite.
D) The device installs the portion of MIDlet suite it has downloaded until that point.
3. What is the result if a call to serviceRepaints() triggers a separate thread to invoke paint()?
A) An exception is thrown at runtime.
B) The system may deadlock if the caller to serviceRepaints() holds a lock that is also needed by paint().
C) A deadlock always occurs.
D) MIDP is thread-safe. There will never be a deadlock.
4. Given the MIDlet code:
2 0. String arg = "telepathy:op=mind.read, target=James.Gosling";
2 1. Connection conn = Connector.open(arg);
Assume telepathy is an unsupported protocol.
Which is true?
A) The user is presented with an alert.
B) An exception is thrown at runtime.
C) Compilation fails.
D) The system quietly ignores the request.
5. 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, each Sprite must have no more than one frame.
C) For the two Sprite objects to be considered in collision, collidesWith() must be invoked on both objects.
D) The most efficient way to detect collision is to use collision detection based solely on the collision rectangles.
Fragen und Antworten:
| 1. Frage Antwort: Nur für Mitglieder sichtbar | 2. Frage Antwort: C | 3. Frage Antwort: B | 4. Frage Antwort: B | 5. Frage Antwort: A,D |
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