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Oracle 1Z0-869 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Persistence & Storage | 10% | - Record stores and operations - Data sharing and access control - Record Management System (RMS) |
| JTWI Overview and Wireless Application Basics | 10% | - Java Technology for Wireless Industry (JSR 185) - Architecture of JTWI-compliant applications |
| MIDP User Interface | 15% | - High-level UI components - Low-level UI and Canvas - Event handling and commands - MIDP Game API |
| Security | 10% | - Secure network communication - CLDC and MIDP security model - Permissions and protection domains |
| CLDC Configuration | 15% | - CLDC 1.0 and CLDC 1.1 features - Memory and resource constraints - Connected Limited Device Configuration APIs |
| MIDP Application Model & Lifecycle | 15% | - MIDlet lifecycle and states - Application delivery and provisioning - JAD and JAR files structure - Push Registry mechanism |
| Networking & Communication | 15% | - HTTP, HTTPS, Socket connections - Generic Connection Framework (GCF) - Wireless Messaging API (WMA) 1.1 - Multimedia API (MMAPI) 1.1 |
Oracle Java Mobile Edition 1 Mobile Application Developer Certified Professional Sample Questions:
Assume a particular JTWI phone supports server socket connections. A MIDlet running on the phone attempts to register a connection using:
PushRegistry.registerConnection(connection, midlet, filter); Assume connection, midlet, and filter are NOT null. The statement is executed and throws a ConnectionNotFoundException. What causes the exception?
- A. The syntax of connection is invalid.
- B. The specified MIDlet does NOT exist.
- C. The phone does NOT support push connections using server sockets.
- D. The requested connection is already registered.
Correct Answer: C 🗳️
Which three dimensions of a standard-size application does the JTWI 1.0 specification define? (Choose three.)
- A. heap size
- B. JAR size
- C. RMS data size
- D. screen size
- E. JAD size
Correct Answer: B,C,E 🗳️
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.
Correct Answer: B 🗳️
Which is true regarding the use of Thread objects in a CLDC 1.1 compliant virtual machine?
- A. A Thread lives until it exits from the run() method it invoked at startup.
- B. To stop a Thread, a developer can use the stop() method.
- C. A Thread can be stopped only from the inside of a MIDlet class.
- D. There is no way for one Thread to force another Thread to stop.
Correct Answer: A 🗳️
Which is true about the process of updating a MIDlet suite in a JTWI-compliant device?
- A. An unsigned MIDlet suite must NOT be allowed to update a signed MIDlet suite.
- B. A MIDlet suite CANNOT be updated with the same MIDlet suite from a different URL.
- C. The RMS record stores of the updated MIDlet suite are always lost.
- D. A MIDlet suite CANNOT be updated with another MIDlet suite that has a lower value for the MIDlet-Version attribute.
Correct Answer: A 🗳️
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