Oracle 1Z0-869 Online Practice Questions and Exam Preparation

Oracle 1Z0-869 Online Questions & Answers

• Question 11:

  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.
  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.

• Question 12:

  Given: 10. MessageConnection conn;

  11.

  12.

  public void startApp() {

  13.

  try {

  14.

  conn = (MessageConnection) Connector.open("cbs://:3382");

  15.

  //...

  17.

  } catch (Exception e) {

  18.

  //...

  20.

  }

  21.

  }

  22.

  30.

  public void run() {

  31.

  Message msg = conn.receive();

  32.

  //...

  40.

  conn.send(msg);

  41.

  }

  What is the result?

  A. An error at line 40 causes an exception at runtime.
  B. An error at line 14 causes an exception at runtime.
  C. An error at line 14 causes compile to fail.
  D. The code successfully sends a message.
  E. An error at line 31 causes an exception at runtime.
  A. An error at line 40 causes an exception at runtime.

• Question 13:

  Given the MIDlet code:

  11. try {

  12.Class socketClass = Class.forName("java.net.Socket");

  13.Object socket = socketClass.newInstance();

  14.

  } catch (ClassNotFoundException x) {

  15.

  } catch (InstantiationException y) {

  16.

  } catch (IllegalAccessException z) {

  17.

  }

  Which is true?

  A. It will compile, but results in a ClassNotFoundException.
  B. It will not compile. Class.forName() is not supported by CLDC.
  C. It will not compile. ClassNotFoundException and IllegalAccessException are not supported by CLDC.
  D. It will compile, but results in an InstantiationException.
  A. It will compile, but results in a ClassNotFoundException.

• Question 14:

  Given

  10. // ...

  20.

  VolumeControl vc;

  21.

  vc = (VolumeControl) player.getControl("VolumeControl");

  22.

  vc.setLevel(4);

  23.

  // ...

  Which is true about the volume of audio playback from player when the code is executed?

  A. The volume of the audio is exactly 40 dB.
  B. The volume of the audio must be the same on all MIDP devices.
  C. The volume of the audio is up to the MIDP device.
  D. The volume of the audio is approximately 0.4 dB.
  C. The volume of the audio is up to the MIDP device.

• Question 15:

  Given:

  11.

  HttpsConnection c = (HttpsConnection)

  Connector.open("https://www.mywebserver.com");

  12.

  int portNumber = c.getPort();

  What is the value of the portNumber variable after executing the code?

  A. 443
  B. 80
  D. 25
  A. 443

• Question 16:

  Click the Exhibit button. The application has a single Displayable object. Which two are true? (Choose two.)

  

  A. The Exit command must have been set with a priority equal to or greater than the examollectionvce.com Leaders in IT Certification 85 priorities of commands Go, Foo, and Bar.
  B. The program code did NOT necessarily specify the location of the Exit button.
  C. If Go, Foo, and Bar are all Command objects, each may have its own separate CommandListener object.
  D. In the MIDlet code, a Command object of type Command.MENU must have been created.
  E. If Go is a Command object, it is possible that another device would map Go to a button on the device (as opposed to a menu list).
  B. The program code did NOT necessarily specify the location of the Exit button.
  E. If Go is a Command object, it is possible that another device would map Go to a button on the device (as opposed to a menu list).

• Question 17:

  In the JTWI 1.0 specification, what is the recommended screen size as returned by Canvas.getHeight() and Canvas.getWidth(), when in full screen mode?

  A. 320x240 pixels
  B. 125x125 pixels
  C. 176x208 pixels
  D. 96x54 pixels
  B. 125x125 pixels

• Question 18:

  A MIDlet suite running on a GSM phone successfully receives an SMS text message msg from another GSM phone. The suite is using a valid SMS MessageConnection object conn opened in server mode.

  The suite tries to respond back using:

  msg.setPayloadText("thank you!");

  conn.send(msg);

  Which is true?

  A. The code always fails because the connection object is missing an address for sending a response.
  B. The code can succeed because the connection object contains an address for sending a response.
  C. The code can succeed because the message object contains an address for sending a response.
  D. The code always fails because the message object is missing an address for sending a response.
  C. The code can succeed because the message object contains an address for sending a response.

• Question 19:

  Which is true about the garbage collector?

  A. It effectively prevents memory leaks.
  B. It needs to be run by the developer.
  C. It manages all memory deallocation.
  D. It always uses the mark and sweep algorithm.
  C. It manages all memory deallocation.

• Question 20:

  Which is true about a Ticker object?

  A. The Ticker can be started and stopped through methods in the API.
  B. Direction and speed of scrolling can be controlled through methods in the API.
  C. A Ticker may be shared by several Displayable objects.
  D. Ticker is a subclass of Screen.
  C. A Ticker may be shared by several Displayable objects.