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

1. GSM defines two mechanisms for SMS message concatenation. Which is true?

A) JTWI devices must implement both mechanisms for sent messages, and may implement either mechanism for received messages.
B) JTWI devices may implement either mechanism for sent messages, and must implement both mechanisms for received messages.
C) JTWI devices must implement both mechanisms for sent and received messages.
D) JTWI devices may implement either mechanism for sent and received messages.

2. 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 if another application has already reserved the connection on the device.
B) Push registration can fail because the device does NOT support the use of datagrams by the PushRegistry.
C) Push registration can fail if there is a push registration conflict, but the user must be prompted as to how to resolve the problem.
D) Push registration can fail if the allowed sender filter specified is *, which poses a security risk to the device.

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

4. Given a MIDP 2.0 device supports alpha blending, a MIDlet needs to render semi- transparent images of size 10x10 pixels. However, these images need to be generated at runtime. That is, they CANNOT be loaded as PNGs. What is the correct way to create a
10x10, red, semi-transparent image, using only the MIDP 2.0 API?

A) use createImage() to create a mutable Image; first fill it with white pixels, then fill it with red pixels
B) use createRGBImage() to create an immutable Image from ARGB data with the desired values
C) use createImage() to create a mutable Image, then fill it with red pixels
D) This is not possible. An Image with semi-transparency CANNOT be created at runtime.

5. The binding of networking protocols to a MIDlet at runtime can be compared to a type of relationship. Which relationship most closely matches the binding?

A) mark and sweep
B) caller and callee
C) application and device drivers
D) specification and implementation

Solutions: