1Z0-869 Online Practice Questions and Answers

Which two are true regarding error handling for classes that exist in both CLDC and J2SE? (Choose two.)

A. The set of error classes is essentially the same in CLDC and J2SE.

B. The set of error classes is much reduced in CLDC to help reduce the overhead of the JVM.

C. If a class throws an error in CLDC, it should throw the same error as in J2SE or its nearest superclass.

D. There is no correspondence between the errors defined by CLDC and J2SE because the needs of CLDC and J2SE are so different.

What is the minimum number of received SMS messages that a JTWI device must be able to concatenate?

A. 5

B. 32

C. 10

D. 3

E. no minimum

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. An exception is thrown at runtime.

B. The file is interpreted as an ASCII file.

C. player is set to null.

D. The file is interpreted as an HTML file.

Which two media controls are guaranteed to be available to any MIDP 2.0 device? (Choose two.)

A. RecordControl

B. PitchControl

C. VolumeControl

D. VideoControl

E. ToneControl

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

Which two are true regarding the interaction of the Application Management Software (AMS) and a MIDlet when a connection notification is pushed to a device? (Choose two.)

A. If the notification is for a datagram, the AMS must guarantee that the datagram is made available to the MIDlet after the MIDlet is invoked. However, additional datagrams could be lost during the time required to start the MIDlet.

B. If the AMS starts a MIDlet in response to an inbound connection, the MIDlet must defer the responsibility of closing the connection to the AMS to prevent an IOException from occurring.

C. There are no guarantees provided by the AMS as to the state of a datagram or socket connection. The connection notification is intended to start the MIDlet to handle subsequent connections.

D. If the notification is for a socket, the connection must be provided to the MIDlet. However the server side of the connection may timeout before the MIDlet actually starts.

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. Port 444 may be restricted or ignored by some MIDP implementations.

C. The code is portable because all the classes and interfaces used are defined in the CLDC.

D. Datagrams may not be supported on all platforms.

A MIDlet has registered a push connection in the PushRegistry and a connection notification is pushed to the device. Which two are true? (Choose two.)

A. If the MIDlet is NOT running, the Application Management Software starts the MIDlet.

B. If the application is running, it is responsible for all I/O operations associated with the inbound connection.

C. The Application Management Software is always responsible for any inbound notification requests.

D. Once a connection is registered in the PushRegistry, the Application Management Software is always responsible for any connections.

E. If the MIDlet is in the paused state, the Application Management Software is responsible for any inbound notification requests.

Assume a device supports datagrams and a MIDlet has permission to use datagram connections. Which two are true? (Choose two.)

A. Push registration can fail because the device does NOT support the use of datagrams by the PushRegistry.

B. Push registration can fail if another application has already reserved the connection on the device.

C. Push registration can fail if the allowed sender filter specified is *, which poses a security risk to the device.

D. Push registration can fail if there is a push registration conflict, but the user must be prompted as to how to resolve the problem.

A MIDlet is written to use the media features available in MIDP 2.0. What change is required to use the MIDlet on a device that supports the full MMAPI?

A. The creation of Player objects must be modified.

B. No change is necessary. The MIDP's media API is a proper subset of MMAPI.

C. The MIDlet CANNOT be used under MMAPI.

D. Any tone generation code should be removed.