Oracle 1Z0-869 Online Practice Questions and Exam Preparation

Oracle 1Z0-869 Online Questions & Answers

• Question 271:

  Given:

  10. //...

  20.

  Manager.playTone(ToneControl.C4, 100, -100);

  21.

  System.out.println("done");

  22.

  //... Which is true?

  A. Compilation fails.
  B. done is printed after playTone() completes.
  C. done is printed directly after playTone() is called.
  D. An IllegalArgumentException is thrown at runtime.
  C. done is printed directly after playTone() is called.

• Question 272:

  Which two are true about developing a MIDP 2.0-compliant user interface? (Choose two.)

  A. TextBox is not a portable UI Displayable.
  B. Canvas is considered part of the low-level user interface API.
  C. Support for starting threads in an event handler is not guaranteed across all devices.
  D. The only way to guarantee that text displays properly on the screen is to use the low- level API and draw the string directly in the paint() method.
  E. Double-buffering is not guaranteed when using Canvas.
  F. Command instances are always mapped to soft buttons on the device.
  B. Canvas is considered part of the low-level user interface API.
  E. Double-buffering is not guaranteed when using Canvas.

• Question 273:

  Which two methods are available only within classes of the MIDP low-level UI API? (Choose two.)

  A. setPreferredSize()
  B. setFullScreenMode()
  C. getLayout()
  D. hasRepeatEvents()
  E. notifyStateChanged()
  B. setFullScreenMode()
  D. hasRepeatEvents()

• Question 274:

  Which is true regarding the javax.wireless.messaging package?

  A. Message objects are assumed always to be blocks of binary data.
  B. The messaging protocols that use this API are typically store-and-forward.
  C. This API is designed to run exclusively on the GSM SMS protocol.
  D. Messages are usually lost if the recipient is not connected at the time of sending.
  B. The messaging protocols that use this API are typically store-and-forward.

• Question 275:

  What is guaranteed by the class file verifier?

  A. It checks that a given program is a valid Java application.
  B. It checks for external resource access.
  C. It checks for attempted native library access.
  D. It checks for attempted network access.
  A. It checks that a given program is a valid Java application.

• Question 276:

  Which two are true about errors and exceptions in a CLDC-compliant virtual machine? (Choose two.)

  A. A CLDC-compliant virtual machine must NOT throw a VirtualMachineError.
  B. Developers do NOT receive asynchronous exceptions from a CLDC-compliant virtual machine.
  C. Developers must throw only checked (non-runtime) exceptions.
  D. Rather than throwing the Error class specified by the Java Language Specification, the CLDC-compliant virtual machine may throw a CLDC-supported superclass.
  E. Developers are NOT allowed to handle errors.
  B. Developers do NOT receive asynchronous exceptions from a CLDC-compliant virtual machine.
  D. Rather than throwing the Error class specified by the Java Language Specification, the CLDC-compliant virtual machine may throw a CLDC-supported superclass.

• Question 277:

  Assume a particular JTWI phone supports server socket connections. A MIDlet running on the phone attempts to register a connection using:

  PushRegistry.registerConnection(connection, midlet, filter);

  Assume connection, midlet, and filter are NOT null. The statement is executed and throws a ConnectionNotFoundException.

  What causes the exception?

  A. The specified MIDlet does NOT exist.
  B. The syntax of connection is invalid.
  C. The phone does NOT support push connections using server sockets.
  D. The requested connection is already registered.
  C. The phone does NOT support push connections using server sockets.

• Question 278:

  Given the JAD file:

  1.

  MIDlet-1: YourMIDlet, MyMIDlet.png, YourMIDlet

  2.

  MIDlet-2: MyMIDlet, MyMIDlet.png, MyMIDlet

  3.

  MIDlet-3: TheirMIDlet, MyMIDlet.png, TheirMIDlet

  4.

  MIDlet-Jar-Size: 46902

  5.

  MIDlet-Name: MyMIDlet

  6.

  MIDlet-Jar-URL: http://mywebserver.com/mymidlets/MyMIDlet.jar

  7.

  MIDlet-Vendor: MyCompany

  8.

  MIDlet-Version: 1.1

  Which two can be true for a JTWI-compliant device after installation of the MIDlet suite? (Choose two.)

  A. The device executes the MIDlet referred to by the MIDlet-2 attribute in the JAD file.
  B. The device executes the MIDlet referred to by the MIDlet-1 attribute in the JAD file.
  C. The device shows a menu to the user for selecting the MIDlet to execute.
  D. The device executes all three MIDlets in sequence starting from the first.
  B. The device executes the MIDlet referred to by the MIDlet-1 attribute in the JAD file.
  C. The device shows a menu to the user for selecting the MIDlet to execute.

• Question 279:

  Drag Drop

  Place the appropriate platform label on the class name. If the class exists in both CLDC and J2SE, choose the "Exists in BOTH..." option, regardless of whether the package names are different.

  Select and Place:

  

  

• Question 280:

  Given:

  HttpConnection conn =

  (HttpConnection) Connector.open("http://internalsite:8080/");

  and

  MIDlet-Permission-Opt is set to javax.microedition.io.Connector.http in the JAD file.

  What is the result?

  A. The application will install and execute without explicit user interaction.
  B. The application will install, but the application will not execute.
  C. The application will not install in the untrusted domain.
  D. The application will install and execute with explicit user interaction.
  D. The application will install and execute with explicit user interaction.