Oracle Oracle Certifications 1Z0-869 Questions & Answers

• Question 231:

  A MIDlet makes its only attempt to register a push connection on a JTWI device using:

  PushRegistry.registerConnection(

  "datagram://:79", midlet, "10.0.0.???");

  Which is true?

  A. The MIDlet accepts datagram push connections on port 79 only from IP addresses in the range 10.0.0.100 to 10.0.0.255.

  B. The call to registerConnection() causes an exception, because the string 10.0.0.??? is an illegal argument.

  C. The MIDlet accepts datagram push connections on port 79 only from IP addresses in the range 10.0.0.100 to 10.0.0.255 and on any other port from IP addresses other than those in the range 10.0.0.100 to 10.0.0.255.

  D. The MIDlet accepts datagram push connections on port 79 only from IP addresses in the range 10.0.0.0 to 10.0.0.255.

  Correct Answer: A

• Question 232:

  Which two specifications are mandatory in JTWI 1.0? (Choose two.)

  A. MMAPI 1.1

  B. Location API

  C. WMA 1.1

  D. MIDP 2.0

  E. WMA 1.0

  Correct Answer: CD

• Question 233:

  Click the Exhibit button.

  Which two are true assuming this method is in a MIDlet? (Choose two.)

  

  A. The Chocolate Prefs choice is never displayed to the user.

  B. Compilation fails due to a problem with code related to event handling.

  C. The text "You made a choice" is displayed immediately after the user makes a selection.

  D. The user can select more than one type of chocolate.

  E. An exception occurs at runtime due to a problem related to the event handling code.

  F. Anonymous inner classes must NOT be used as event handlers within a MIDlet.

  Correct Answer: CD

• Question 234:

  What is the minimum configuration that JTWI 1.0 requires?

  A. CDC

  B. CLDC 1.1

  C. no specific configuration

  D. CLDC 1.0

  Correct Answer: D

• Question 235:

  Which two are true about record store listeners? (Choose two.)

  A. A record store can have more than one registered listener.

  B. To listen for all events, three listeners must be registered.

  C. When a record store is closed, listeners are removed.

  D. A record store can have only one registered listener.

  E. Listeners are notified if a record store is deleted.

  Correct Answer: AC

• Question 236:

  Which three statements are true regarding the handling of wireless connections? (Choose three.)

  A. Performing network operations on the same thread used by the display is likely to block refreshes of the display until the network operations complete.

  B. A network connection could interfere with other services on the device, such as the ability to receive phone calls or SMS on a phone.

  C. Devices can only support one HttpConnection at a time; therefore, network access from multiple threads must be serialized.

  D. The connection could unexpectedly terminate while processing the input or output streams.

  E. Network connections should never be performed on a separate thread, so problems can be handled quickly.

  Correct Answer: ABD

• Question 237:

  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().

  Correct Answer: BD

• Question 238:

  Which is true regarding Timer objects?

  A. Multiple threads can share a single Timer object only by using external synchronization.

  B. A thread CANNOT stop a Timer object if it is executing a task.

  C. Multiple threads can never share a single Timer object.

  D. Multiple threads can share a single Timer object without using external synchronization.

  Correct Answer: D

• Question 239:

  Given:

  50.

  class MyGameCanvas extends Canvas {

  51.

  //...

  60.

  public MyGameCanvas() {

  61.

  int width1 = getWidth();

  62.

  int height1 = getHeight();

  63.

  //...

  70.

  setFullScreenMode(true);

  71.

  //...

  80.

  int width2 = getWidth();

  81.

  int height2 = getHeight();

  82.

  //...

  90. }

  What is true about width1, height1 and width2, height2?

  A. The call to setFullScreenMode() is ignored because the dimensions have already been set.

  B. The system tries to provide maximum visible area to the MIDlet and these dimensions are width2, height2.

  C. height1 is always equal to height2.

  D. width1 is always equal to width2.

  Correct Answer: B

• Question 240:

  A MIDlet suite is signed using X.509 PKI. Which encoding format must be used for the certificate entries in the JAD file?

  A. binary

  B. none

  C. base64

  D. yEnc

  Correct Answer: C