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Oracle 1Z0-869 Exam Syllabus Topics:
Section
Objectives
APIs and Specifications
- Media Using MIDP 2.0 and MMAPI 1.1
- Networking
- Wireless Messaging API 1.1
- Security (CLDC and MIDP)
Java ME Technologies
- MIDP User Interface API
- Push Registry
- MIDP Persistent Storage
- CLDC 1.0 and 1.1
- MIDP Game API
JTWI and Wireless Application Overview
- JTWI (JSR 185) and Overview of JTWI-Compliant Wireless Applications
Oracle Java Mobile Edition 1 Mobile Application Developer Certified Professional Sample Questions:
Which creates a new record store of type javax.microedition.rms.RecordStore that can be shared between MIDlet suites?
A. openRecordStore("cust", true, AUTHMODE_SHARED, false);
B. openRecordStore("cust", true, AUTHMODE_ANY, false);
C. openRecordStore("cust", false, AUTHMODE_SHARED, false);
D. openRecordStore("cust", false, AUTHMODE_ANY, false);
Answer: B
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. The code is portable because all the classes and interfaces used are defined in the CLDC.
B. Port 444 may be restricted or ignored by some MIDP implementations.
C. Installation will fail on devices that do not support datagrams.
D. Datagrams may not be supported on all platforms.
Answer: B,D
Which is true about the installation status report definition?
A. A MIDlet suite CANNOT be removed until the installation notification has been successfully sent and the acknowledgement has been received.
B. The only protocols supported for the status report notification are HTTP and UDP.
C. In response to an installation status report, the server must reply with a 200 OK. HTTP acknowledgement response.
D. If the installation status report CANNOT be sent, the device must refuse the installation of the MIDlet suite.
Answer: C
Given the MIDlet code: 11. try { 1 2. while (true) { 1 3. ServerSocketConnection server = (ServerSocketConnection) 1 4. Connector.open("socket://:444", Connector.READ, true); 1 5. SocketConnection conn= (SocketConnection) 1 6. server.acceptAndOpen(); 1 7. InputStream is = conn.openInputStream(); 1 8. StringBuffer buffer = new StringBuffer(); 1 9. for (int ch = -1; (ch = is.read()) != -1; ){ 2 0. buffer.append((char)ch); 2 1. } 2 2. System.out.println(buffer); 2 3. } 2 4. } catch (IOException x) {} Which two are true? (Choose two.)
A. The device may run out of connections.
B. The ServerSocketConnection is guaranteed to timeout at line 16 if there is no activity on the connection after a period of time.
C. An IOException could occur, causing the while loop to terminate.
D. The call to server.acceptAndOpen() on line 16 returns immediately if there is no activity on the connection.
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