Oracle 1Z0-869 Online Practice Questions and Exam Preparation

Oracle 1Z0-869 Online Questions & Answers

• Question 61:

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

  A. The record store must be open prior to calling deleteRecordStore().
  B. If the record store is open, an exception will be thrown.
  C. For any registered listener of the record store, recordDeleted() will be called.
  D. The record store must be closed prior to calling deleteRecordStore().
  B. If the record store is open, an exception will be thrown.
  D. The record store must be closed prior to calling deleteRecordStore().

• Question 62:

  A mobile application developer wants to reduce memory use and improve the speed of a game using the MIDP 2.0 Game API. Which three are valid, legal ways to help fulfill the developer's goal? (Choose three.)

  A. while(gameActive) { int keyStates = getKeyStates(); if ((keyStates and LEFT_PRESSED) != 0) { // code to move a Sprite }
  B. GameCanvas game = new GameCanvas(true); //suppress key events
  C. layerManager.setViewWindow(0,0, getWidth() + 50, getHeight() + 50);
  D. mySprite.collidesWith(otherSprite, false); //pixel level false
  E. keyPressed(int keyCode) { // code to process the key press event }
  A. while(gameActive) { int keyStates = getKeyStates(); if ((keyStates and LEFT_PRESSED) != 0) { // code to move a Sprite }
  B. GameCanvas game = new GameCanvas(true); //suppress key events
  D. mySprite.collidesWith(otherSprite, false); //pixel level false

• Question 63:

  Which are valid states for an HttpConnection?

  A. setup, connected, closed
  B. created, active, closed
  C. connected, disconnected
  D. started, paused, destroyed
  A. setup, connected, closed

• Question 64:

  Given the MIDlet code:

  7.

  public void exitApp() {

  8.

  Runtime rt = Runtime.getRuntime();

  9.

  rt.exit(0);

  10.

  }

  What is the result of a call to exitApp()?

  A. Compilation fails because of an error on line 9.
  B. A SecurityException is thrown at line 9.
  C. Compilation fails because of an error on line 8.
  D. exitApp() completes execution successfully.
  B. A SecurityException is thrown at line 9.

• Question 65:

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

  A. inlined in the JAR manifest, using a base64 encoding
  B. in .cer files in the JAR's META-INF directory
  C. inlined in the JAD, using a base64 encoding
  D. in a user-defined subclass of SecurityInfo in the JAR's META-INF directory
  C. inlined in the JAD, using a base64 encoding

• Question 66:

  Which two methods are available in both the low-level and high-level APIs? (Choose two.)

  A. getLayout()
  B. getTitle()
  C. isShown()
  D. setFullScreenMode()
  B. getTitle()
  C. isShown()

• Question 67:

  A MIDlet suite has the application descriptor fragment: MIDlet-1: E-mail, email.png, com.example.EmailMIDlet The MIDlet suite has the necessary permissions to use the PushRegistry. What line does the application descriptor need to register the MIDlet suite for socket push connections on port 79?

  A. MIDlet-Push-1: socket://:79, E-mail, *
  B. MIDlet-Push-1: socket://:79, MIDlet-1, *
  C. MIDlet-Push-1: socket://:79, EmailMIDlet, *
  D. MIDlet-Push-1: socket://:79, com.example.EmailMIDlet, *
  D. MIDlet-Push-1: socket://:79, com.example.EmailMIDlet, *

• Question 68:

  The developer is designing a game that uses the LayerManager and Sprite classes. Three Sprite objects are added to a LayerManager object and a call is placed to the LayerManager.paint(Graphics, x, y) method. In what order are the Sprite objects rendered to the device display?

  A. The Sprites are rendered in a random order.
  B. The Sprites are rendered in order of descending index.
  C. The Sprites that are animated are rendered first.
  D. The Sprites are rendered in an implementation specific manner.
  B. The Sprites are rendered in order of descending index.

• Question 69:

  Which method in Canvas is overridden in GameCanvas?

  A. flushGraphics()
  B. paint()
  C. getKeyStates()
  D. flushGraphics(int, int, int, int)
  E. getGraphics()
  B. paint()

• Question 70:

  Given the MIDlet code:

  12.

  File f = new File("myFile.txt");

  13.

  FileOutputStream ds = new FileOutputStream(f);

  14.

  OutputStreamWriter os = new OutputStreamWriter(ds);

  15.

  BufferedWriter buf = new BufferedWriter(os);

  16.

  buf.write('c'); What is the result?

  A. The code compiles and runs, and then writes the character c to the file myFile.txt.
  B. Compilation succeeds, but an exception is thrown at runtime.
  C. Compilation fails because the code uses one or more classes, which are not supported in CLDC 1.1.
  D. The code compiles and runs, but line 16 is ignored.
  C. Compilation fails because the code uses one or more classes, which are not supported in CLDC 1.1.