Oracle Oracle Certifications 1Z0-869 Questions & Answers

• Question 171:

  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).

  Correct Answer: BE

• Question 172:

  Due to possible performance consequences, the MIDP 2.0 specification urges caution when creating certain types of record store enumerations. Which is identified in the specification as having the greatest probability of resulting in poor

  response time?

  A. using a comparator

  B. setting the keepUpdated argument to true

  C. using a filter

  D. using a filter and a comparator together

  Correct Answer: B

• Question 173:

  How does a TiledLayer determine the sequence of frames in animated tiles?

  A. The tile to be displayed must be set during each frame of the animation.

  B. They CANNOT be set. Animation is possible only with a Sprite.

  C. The sequence of frames is obtained from the location in the source image.

  D. The sequence of frames is obtained from an animated Sprite.

  Correct Answer: A

• Question 174:

  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.

  Correct Answer: C

• Question 175:

  Which is true about CLDC support for accessing system property information?

  A. CLDC supports a subset of java.util.Properties and also provides additional property information using System.getProperty().

  B. Full support for java.util.Properties is available within CLDC.

  C. Property information is available in CLDC using System.getProperty().

  D. CLDC supports a subset of java.util.Properties.

  Correct Answer: C

• Question 176:

  Which are valid states for an HttpConnection?

  A. setup, connected, closed

  B. created, active, closed

  C. connected, disconnected

  D. started, paused, destroyed

  Correct Answer: A

• Question 177:

  Which two properties of a Player can be set programmatically after its creation? (Choose two.)

  A. time base

  B. loop count

  C. media content type

  D. media source

  E. size of data buffer

  Correct Answer: AB

• Question 178:

  Click the Exhibit button.

  Which two are true? (Choose two.)

  

  A. In class A, no new events will be delivered to the application until after the commandAction() method completes.

  B. In class B, no new events will be delivered to the application until after the commandAction() method completes.

  C. The commandAction() method code in class B is compliant with the event-handling approach recommended in the MIDP 2.0 specification.

  D. The event-handling in class A will NOT print done with action until after the run() method has completed.

  E. The commandAction() method code in class A is NOT guaranteed to be portable across all MIDP 2.0-compliant devices.

  F. The event-handling mechanism in class A allows multiple command events to be delivered to the application in parallel.

  Correct Answer: AB

• Question 179:

  Given:

  DatagramConnection dConnection = (DatagramConnection)

  Connector.open("datagram://:9009");

  Which is true?

  A. A client mode datagram connection is created for receiving datagrams.

  B. A client mode datagram connection is created only for sending datagrams.

  C. A server mode datagram connection is created for both sending and receiving datagrams by way of the same port.

  D. A server mode datagram connection is created for both sending and receiving datagrams using different ports.

  Correct Answer: C

• Question 180:

  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

  Correct Answer: ABC