Oracle 1Z0-869 Online Practice Questions and Exam Preparation

Oracle 1Z0-869 Online Questions & Answers

• Question 101:

  Which three functions are performed during the preverification process? (Choose three.)

  A. augment the StackMap
  B. remove certain bytecodes
  C. data type checking
  D. compress the class file
  E. obfuscate the application
  A. augment the StackMap
  B. remove certain bytecodes
  C. data type checking

• Question 102:

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

• Question 103:

  Given:

  10.

  public class ExampleMIDlet extends MIDlet {

  11.

  //...

  20.

  public ExampleMIDlet() {

  21.

  Hashtable cache = new Hashtable();

  22.

  synchronized (cache) {

  23.

  while (cache.isEmpty()) {

  24.

  try {cache.wait();}

  25.

  catch (InterruptedException e) {/* handle me */}

  26.

  }

  27.

  }

  28.

  }

  29.

  //...

  40. }

  Which two are true? (Choose two.)

  A. The program hangs.
  B. An unchecked exception is thrown at runtime.
  C. The program is in conflict with recommendations of the MIDP specification.
  D. An IllegalMonitorStateException is thrown at runtime.
  A. The program hangs.
  C. The program is in conflict with recommendations of the MIDP specification.

• Question 104:

  A MIDP 2.0 compliant device creates an HTTP connection to a server that supports HTTP 1.1. Which is true?

  A. The device definitely supports HTTP 1.1.
  B. The device definitely does NOT support HTTP 1.1.
  C. The device may or may NOT support HTTP 1.1.
  D. There is no such thing as a 1.1 version of HTTP.
  A. The device definitely supports HTTP 1.1.

• Question 105:

  obscure is a content type unsupported on a device that executes:

  10.

  String locator = "http://foobar.sun.com/content.obscure";

  11.

  Player player = Manager.createPlayer(locator); Which is true?

  A. The file is interpreted as an HTML file.
  B. An exception is thrown at runtime.
  C. The file is interpreted as an ASCII file.
  D. player is set to null.
  B. An exception is thrown at runtime.

• Question 106:

  Given:

  11.

  Alert alt = new Alert("");

  12.

  alt.setType(AlertType.ALARM);

  Which line of code requests alt to display an alert until acknowledged by the user?

  A. alt.setType(Alert.MODAL);
  B. alt.setType(Alert.FOREVER);
  C. alt.setTimeout(Alert.MODAL);
  D. alt.setTimeout(Alert.FOREVER);
  D. alt.setTimeout(Alert.FOREVER);

• Question 107:

  Which two are true? (Choose two.)

  A. GameCanvas provides an off-screen buffer.
  B. GameCanvas extends Canvas and is NOT abstract.
  C. GameCanvas provides the ability to get the states of the physical keys of the device.
  D. GameCanvas can render only Sprite and Layer objects.
  A. GameCanvas provides an off-screen buffer.
  C. GameCanvas provides the ability to get the states of the physical keys of the device.

• Question 108:

  Which three are goals of the CLDC specification? (Choose three.)

  A. It is intended to be an application development platform.
  B. It is intended as a systems programming environment.
  C. It allows device manufacturers to build more extensible devices.
  D. It does NOT provide device-specific APIs.
  E. It allows developers to port existing applications to mobile devices.
  A. It is intended to be an application development platform.
  C. It allows device manufacturers to build more extensible devices.
  D. It does NOT provide device-specific APIs.

• Question 109:

  Given the MIDlet code:

  11.

  DatagramConnection dgc = (DatagramConnection)Connector.open("datagram://:444");

  12.

  Datagram datagram = dgc.newDatagram(20);

  13.

  dgc.receive(datagram);

  14.

  byte[] data = datagram.getData();

  15.

  String s = new String(data);

  16.

  list.append(s, null);

  17.

  System.out.println("Datagram received: " + s);

  Which two are true regarding the portability of the code between devices? (Choose two.)

  A. Installation will fail on devices that do not support datagrams.
  B. Datagrams may not be supported on all platforms.
  C. The code is portable because all the classes and interfaces used are defined in the CLDC.
  D. Port 444 may be restricted or ignored by some MIDP implementations.
  B. Datagrams may not be supported on all platforms.
  D. Port 444 may be restricted or ignored by some MIDP implementations.

• Question 110:

  Given the MIDlet code:

  11.

  public void startApp() {

  12.

  Form f = new Form("hello");

  13.

  Display.getDisplay(this).setCurrent(f);

  14.

  System.gc();

  15.

  System.exit(0);

  16.

  f.append("foo");

  17.

  }

  What is the result?

  A. The application runs without exception, but foo is not printed.
  B. The application runs, but line 15 is ignored.
  C. The application runs, but throws an exception at runtime.
  D. Compilation fails.
  E. The application runs, and foo prints to the current display.
  C. The application runs, but throws an exception at runtime.