Oracle Oracle Certifications 1Z0-869 Questions & Answers

• Question 141:

  What are two benefits of the PushRegistry? (Choose two.)

  A. It provides a way for the AMS to automatically invoke a MIDlet at a specified time if it is not already running.

  B. It provides a way for an incoming connection to invoke a MIDlet that can handle the content sent by the connection.

  C. It provides a way for two MIDlet suites running on the same device to discover and communicate with each other in a secure manner.

  D. It provides a way to restrict HTTP connections to well-known network addresses.

  Correct Answer: AB

• Question 142:

  Which is true when using multiple threads to access a record store?

  A. The implementation coordinates access, ensuring that record stores will NOT be corrupted.

  B. You must lock a record store prior to access.

  C. You CANNOT access a record store with multiple threads.

  D. You must coordinate access to a record store to prevent data corruption.

  Correct Answer: D

• Question 143:

  Given two options to synthesize tones: Manager.playTone(); And:

  5. //...

  11.

  Player p = Manager.createPlayer(Manager.TONE_DEVICE_LOCATOR);

  12.

  p.realize();

  13.

  ToneControl c = (ToneControl)p.getControl("ToneControl");

  14.

  c.setSequence(sequence);

  15.

  p.start();

  Which is true?

  A. Manager.TONE_DEVICE_LOCATOR is not a valid field.

  B. The second option lets developers set playback tempo.

  C. Both options have the same result.

  D. The second option lets developers set playback pitch.

  Correct Answer: B

• Question 144:

  Which classes and interfaces are available in CLDC?

  A. Vector, Hashtable, Iterator

  B. Vector, Hashtable, Stack, Enumeration

  C. List, ArrayList, Vector, Hashtable, HashSet

  D. List, Set, Vector, Hashtable

  Correct Answer: B

• Question 145:

  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 device installs the portion of MIDlet suite it has downloaded until that point.

  B. The server will push the MIDlet suite to the device the next time it has data network connectivity.

  C. The device will try again to download the JAR file the next time it has data network connectivity.

  D. The device aborts the installation and frees the space reserved for that MIDlet suite.

  Correct Answer: D

• Question 146:

  Given a class named MyCanvas, which three CANNOT be used if MyCanvas is a direct subclass of Canvas? (Choose three.)

  A. Sprite s = new Sprite(anImage, 20,20);

  B. gameAction = getGameAction(keyCode) { }

  C. isDoubleBuffered();

  D. public MyCanvas(boolean t) { super(true); }

  E. keyStates = getKeyStates(); if ((keyStates and LEFT_PRESSED) != 0) { }

  F. flushGraphics();

  Correct Answer: DEF

• Question 147:

  Given the MIDlet code:

  20.

  String arg = "telepathy:op=mind.read, target=James.Gosling";

  21.

  Connection conn = Connector.open(arg); Assume telepathy is an unsupported protocol. Which is true?

  A. The user is presented with an alert.

  B. The system quietly ignores the request.

  C. An exception is thrown at runtime.

  D. Compilation fails.

  Correct Answer: C

• Question 148:

  Given: MIDlet Suite A public class Person public class Address MIDlet Suite B public class Person Which is true?

  A. Person in MIDlet Suite B is allowed access to Address class in MIDlet Suite A based on the protection domain.

  B. Person in MIDlet Suite B is allowed restricted access to the Address class in MIDlet Suite A.

  C. Person in MIDlet Suite B is NOT allowed access to the Address class defined in MIDlet Suite A.

  D. Person in MIDlet Suite B is allowed access to the Address class defined in MIDlet Suite

  E.

  Correct Answer: C

• Question 149:

  Given the MIDlet code:

  20.

  String arg = "telepathy:op=mind.read, target=James.Gosling";

  21.

  Connection conn = Connector.open(arg); Assume telepathy is an unsupported protocol.

  Which is true?

  A. An exception is thrown at runtime.

  B. The user is presented with an alert.

  C. The system quietly ignores the request.

  D. Compilation fails.

  Correct Answer: A

• Question 150:

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

  B. 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.

  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.

  Correct Answer: BC