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

1. Given:
RecordStore rs = null;
static final String REC_STORE = "appdata"; And, the record store does NOT already exist.
Which is the correct way to open the record store, requesting the record store be created?

A) rs = RecordStore.openRecordStore(REC_STORE, true);
B) rs = RecordStore.createRecordStore(REC_STORE, true);
C) rs = RecordStore.createRecordStore(REC_STORE, 1);
D) rs = RecordStore.openRecordStore(REC_STORE);
E) rs = RecordStore.createRecordStore(REC_STORE);
F) rs = RecordStore.openRecordStore(REC_STORE, 1);

2. Given:
1 1. HttpsConnection c = (HttpsConnection)
Connector.open("https://www.mywebserver.com");
1 2. int portNumber = c.getPort();
What is the value of the portNumber variable after executing the code?

A) 0
B) 443
C) 80
D) 25

3. Given:
a JAR containing a MIDlet named TesterMIDlet
a JAD with this content: CertificationExam:
Sun Certified Mobile Application DeveloperMIDlet-1: TesterMIDlet, ,
certification.TesterMIDlet MIDlet-Jar-Size: 2038 MIDlet-Jar-URL: Certification.jar MIDlet- Name: Certification MIDlet-Vendor: A Testing Company MIDlet-Version: 1.0 MicroEdition- Configuration: CLDC-1.0 MicroEdition-Profile: MIDP-2.0 This MIDlet needs to get the property with the key CertificationExam defined in the JAD.
This needs to be assigned to a String ExamName from within the MIDlet.startApp() method.
What is the correct way to accomplish this?

A) String ExamName = System.getProperty("CertificationExam");
B) String ExamName = this.getAppProperty("CertificationExam");
C) String ExamName = this.getAppProperty("MIDlet-CertificationExam");
D) String ExamName = System.getProperty("MIDlet-CertificationExam");

4. wav is a content type supported on a device that executes:
1 0. Player p;
1 1. p = Manager.createPlayer("http://foobar.sun.com/sound.wav");
1 2. p.prefetch();
Which is true?

A) No exception is thrown at runtime. No sound is played.
B) sound.wav is played on the device.
C) An exception is generated at runtime.
D) The result is device-dependent.

5. Which two are true about the javax.wireless.messaging.MessageConnection interface?
(Choose two.)

A) This interface is intended for all wireless messaging protocols.
B) Threads that are waiting to receive messages must be blocking threads.
C) It provides methods to create Connector objects.
D) When creating a client mode message, a string that identifies an endpoint on the local host should be passed to Connector.open().
E) An application can have both client and server mode MessageConnection instances open simultaneously.

Solutions: