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Oracle 1Z0-869 Exam Syllabus Topics:

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

1. Given the MIDlet code:
1 0. //...
2 0. try {
2 1. Connection conn = Connector.open("http://www.sun.com");
2 2. InputStream is = conn.getInputStream();
2 3. //...
3 0. } catch (IOException e) {
3 1. //...
4 0. }
Which is true?

A) An exception is thrown at runtime.
B) Compilation fails.
C) The system returns a valid InputStream for reading.
D) The system returns a null InputStream.

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

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

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

4. Which two are true about errors and exceptions in a CLDC-compliant virtual machine?
(Choose two.)

A) Developers must throw only checked (non-runtime) exceptions.
B) Developers are NOT allowed to handle errors.
C) Rather than throwing the Error class specified by the Java Language Specification, the CLDC-compliant virtual machine may throw a CLDC-supported superclass.
D) Developers do NOT receive asynchronous exceptions from a CLDC-compliant virtual machine.
E) A CLDC-compliant virtual machine must NOT throw a VirtualMachineError.

5. A game running on a J2ME device supporting MMAPI needs to play tones in the background of the game. It intermittently needs to play sounds of explosions.
The code has created two Player objects: one for tones and one for WAV audio.
How does the developer know if both audio streams can be heard simultaneously?

A) Playing audio streams simultaneously is only a request. The device determines whether to do so.
B) The developer can query the system using System.getProperty("supports.mixing");.
C) Playing audio streams simultaneously is NOT possible with any MMAPI implementation.
D) The developer knows playing audio streams simultaneously is supported because two Player objects have been created.

Solutions: