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Oracle Java Mobile Edition 1 Mobile Application Developer Certified Professional Sample Questions:

1. Given:
DataInputStream incoming
Connector.openDataInputStream("sms://+3125551234:3434");
Which is true?

A) The + in the URL is positioned incorrectly.
B) MessageConnection does NOT support InputStream objects.
C) Port numbers are NOT allowed in SMS URLs.
D) The port number indicated is a protected SMS port.

2. Which two are true about MIDlet suite provisioning? (Choose two.)

A) A JTWI-compliant device must support HTTP authentication.
B) A JTWI-compliant device must support HTTP 1.1.
C) A JTWI-compliant device must support HTTP 1.1 and cookies.
D) A JTWI-compliant device must support HTTP 1.0.

3. A JTWI device has a working socket implementation. A MIDlet requests permission to use socket connections on this device using the attribute MIDlet-Permissions-Opt, but is denied permission.
Given:
2 0. public void connect() {
2 1. try {
2 2. String addr = "socket://host.com:79";
2 3. SocketConnection sc;
2 4. sc = (SocketConnection) Connector.open(addr);
2 5. sc.setSocketOption(SocketConnection.LINGER, 5);
2 6. InputStream is = sc.openInputStream();
2 7. OutputStream os = sc.openOutputStream();
2 8. os.write("\\r\\n".getBytes());
2 9. int ch = is.read();
3 0. // ...
3 5. } catch (IOException ioe) {
3 6. // ...
4 0. }
4 1. }
Which is true assuming that the argument to Connector.open() points to a valid destination, and the device has resources to create new socket connections?

A) If connect() executes, a ConnectionNotFoundException is thrown at runtime at line 24.
B) If connect() executes, a SecurityException is thrown at runtime at line 24.
C) The device disallows the MIDlet to be installed.
D) If connect() executes, a SecurityException is thrown at runtime at line 28.
E) If connect() executes, a SecurityException is thrown at runtime at line 26.

4. Given:
MIDlet-Push-1: datagram://:444, com.fooworks.PushExample, *
MIDlet-Push-2: datagram://:555, com.fooworks.PushExample, *
are statically registered push connections and given:
1 1. protected void startApp() {
1 2. String[] connections = PushRegistry.listConnections(true);
1 3. if(connections.length == 0) {
1 4. connections = PushRegistry.listConnections(false);
1 5. for (int i=0; i < connections.length; i++) {
1 6. new DatagramHandler(connections[i]).start();
1 7. }
1 8. } else {
1 9. for (int i=0; i < connections.length; i++) {
2 0. new DatagramHandler(connections[i]).start();
2 1. }
2 2. }
2 3. }
Which two identify what will go wrong if the code is invoked by the Application Management Software in response to an inbound connection notification? (Choose two.)

A) The first inbound datagram is handled, but all other datagrams are missed.
B) An IOException is thrown if there are no active connections.
C) Datagrams for the active connection are handled, but any datagrams sent to the other port are missed.
D) The first inbound datagram is ignored, all subsequent datagrams are handled by DatagramHandler.
E) Duplicate DatagramHandler objects are created if the MIDlet is paused and then resumed.

5. DRAG DROP
Click the Task button.
Place each class on its corresponding specification.

Solutions: