1Z0-869試験無料問題集（340題）「Oracle Java Mobile Edition 1 Mobile Application Developer Certified Professional 認定」

出題：1

Which two errors are available in CLDC? (Choose two.)

A. java.lang.OutOfMemoryError

B. java.lang.StackOverflowError

C. java.lang.UnknownError

D. java.lang.VirtualMachineError

正解：A,D 解答を投票する

出題：2

Given:
1 4. Canvas canvas;
1 5. // ...
2 4. canvas.repaint(10,10,20,20);
2 5. canvas.serviceRepaints();
What occurs when serviceRepaints() is called?

A. The application blocks until the paint() method returns.

B. The application immediately calls the paint() method.

C. The application blocks until the repaint() method returns.

D. The application immediately calls the repaint() method.

正解：A 解答を投票する

出題：3

Which two are true? (Choose two.)

A. GameCanvas extends Canvas and is NOT abstract.

B. GameCanvas provides the ability to get the states of the physical keys of the device.

C. GameCanvas provides an off-screen buffer.

D. GameCanvas can render only Sprite and Layer objects.

正解：B,C 解答を投票する

出題：4

Assuming an application descriptor contains:
MIDlet-Data-Size: 4096
Which is true?

A. The device will permanently reserve 4096 bytes of RMS space for the application.

B. The device will use 4096 bytes to buffer data the application receives over the network.

C. The device will permanently reserve 4096 bytes of heap space for the application.

D. The device will use 4096 bytes to buffer data the application sends over the network.

正解：A 解答を投票する

出題：5

A MIDlet suite has the application descriptor fragment: MIDlet-1: E-mail, email.png, com.example.EmailMIDlet The MIDlet suite has the necessary permissions to use the PushRegistry. What line does the application descriptor need to register the MIDlet suite for socket push connections on port 79?

A. MIDlet-Push-1: socket://:79, com.example.EmailMIDlet, *

B. MIDlet-Push-1: socket://:79, MIDlet-1, *

C. MIDlet-Push-1: socket://:79, E-mail, *

D. MIDlet-Push-1: socket://:79, EmailMIDlet, *

正解：A 解答を投票する

出題：6

Given:
A record store has three records: Record 1 contains Apple, Record 2 contains Mango, Record 3 contains Cherry, and the RecordComparator class:
1 . public class CompareTest implements RecordComparator {
2 . public int compare(byte[] rec1, byte[] rec2) {
3 . String str1 = new String(rec1), str2 = new String(rec2);
4 . int result = str2.compareTo(str1);
5 . if (result == 0)
6 . return RecordComparator.EQUIVALENT;
7 . else if (result < 0)
8 . return RecordComparator.PRECEDES;
9 . else
1 0. return RecordComparator.FOLLOWS;
1 1. }
1 2. }
What is the return order of the records for an enumerator using CompareTest?

A. Mango, Cherry, Apple

B. Apple, Mango, Cherry

C. Cherry, Mango, Apple

D. Cherry, Apple, Mango

E. Mango, Apple, Cherry

F. Apple, Cherry, Mango

正解：A 解答を投票する

出題：7

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.

正解：A,B 解答を投票する

出題：8

Given the MIDlet code:
11. DatagramConnection dgc
(DatagramConnection)Connector.open("datagram://:444");
1 2. Datagram datagram = dgc.newDatagram(20);
1 3. dgc.receive(datagram);
1 4. byte[] data = datagram.getData();
1 5. String s = new String(data);
1 6. list.append(s, null);
1 7. System.out.println("Datagram received: " + s);
Which two are true regarding the portability of the code between devices? (Choose two.)

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

B. Installation will fail on devices that do not support datagrams.

C. Datagrams may not be supported on all platforms.

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

正解：A,C 解答を投票する

出題：9

Which JAD attribute must be present to begin the MIDlet suite authentication process using
X.509 PKI?

A. MIDlet-Certificate-n-m

B. MIDlet-Permission-Opt

C. MIDlet-Jar-RSA-SHA1

D. MIDlet-Permission

正解：C 解答を投票する

出題：10

Given:
1 2. class TestRecordListener implements RecordListener {
1 3. public void recordAdded(RecordStore rcs, int recordId) {
1 4. // ...
2 5. }
2 6. public void recordDeleted(RecordStore rcs, int recordId) {
2 7. // ...
3 3. }
3 4. public void recordChanged(RecordStore rcs, int recordId) {
3 5. // ...
4 3. }
4 4. }
If rs is a valid and open record store, how can you properly associate a record listener with rs?

A. rs.newRecordListener(new TestRecordListener())

B. rs.createRecordListener(new TestRecordListener())

C. rs.setRecordListener(new TestRecordListener())

D. rs.addRecordListener(new TestRecordListener())

正解：D 解答を投票する

出題：11

Which two events can result in the removal of a MIDlet's dynamic push connection registration? (Choose two.)

A. When the MIDlet is uninstalled.

B. Using a call to PushRegistry.removeConnection().

C. Using a call to PushRegistry.registerConnection().

D. Using a call to PushRegistry.unregisterConnection().

E. Opening the connection using Connector.open().

F. When MIDlet.destroyApp() is called.

正解：A,D 解答を投票する

1Z0-869試験無料問題集「Oracle Java Mobile Edition 1 Mobile Application Developer Certified Professional 認定」