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

1. A MIDlet suite running on a GSM phone successfully receives an SMS text message msg from another GSM phone. The suite is using a valid SMS MessageConnection object conn opened in server mode.
The suite tries to respond back using:
msg.setPayloadText("thank you!");
conn.send(msg);
Which is true?

A) The code can succeed because the message object contains an address for sending a response.
B) The code always fails because the message object is missing an address for sending a response.
C) The code always fails because the connection object is missing an address for sending a response.
D) The code can succeed because the connection object contains an address for sending a response.

2. Which two are true regarding record stores? (Choose two.)

A) All records within a record store have the same length.
B) Record stores can be locked.
C) The first created in a record store has a record ID of 1.
D) MIDlets within the same suite can access the record stores of other MIDlets in the same suite.
E) MIDlets within the same suite CANNOT access the record stores of other MIDlets in the same suite.
F) When a MIDlet suite is removed, record store contents remain on the device.
G) Record store names are case insensitive.

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

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

4. Which three statements are true regarding the handling of wireless connections? (Choose three.)

A) The connection could unexpectedly terminate while processing the input or output streams.
B) Devices can only support one HttpConnection at a time; therefore, network access from multiple threads must be serialized.
C) Network connections should never be performed on a separate thread, so problems can be handled quickly.
D) A network connection could interfere with other services on the device, such as the ability to receive phone calls or SMS on a phone.
E) Performing network operations on the same thread used by the display is likely to block refreshes of the display until the network operations complete.

5. Which three functions are performed during the preverification process? (Choose three.)

A) compress the class file
B) augment the StackMap
C) remove certain bytecodes
D) obfuscate the application
E) data type checking

Solutions: