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Oracle 1Z0-869 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: CLDC Configuration | 15% | - Connected Limited Device Configuration APIs - CLDC 1.0 and CLDC 1.1 features - Memory and resource constraints |
| Topic 2: JTWI Overview and Wireless Application Basics | 10% | - Java Technology for Wireless Industry (JSR 185) - Architecture of JTWI-compliant applications |
| Topic 3: Security | 10% | - Permissions and protection domains - Secure network communication - CLDC and MIDP security model |
| Topic 4: MIDP User Interface | 15% | - Low-level UI and Canvas - Event handling and commands - High-level UI components - MIDP Game API |
| Topic 5: Networking & Communication | 15% | - Wireless Messaging API (WMA) 1.1 - Multimedia API (MMAPI) 1.1 - HTTP, HTTPS, Socket connections - Generic Connection Framework (GCF) |
| Topic 6: MIDP Application Model & Lifecycle | 15% | - MIDlet lifecycle and states - Push Registry mechanism - Application delivery and provisioning - JAD and JAR files structure |
| Topic 7: Persistence & Storage | 10% | - Record stores and operations - Record Management System (RMS) - Data sharing and access control |
Oracle Java Mobile Edition 1 Mobile Application Developer Certified Professional Sample Questions:
Given:
1 . import javax.microedition.midlet.*;
2 . public class Foo extends MIDlet {
3 . public void go() {
4 . try {
5 . doStuff();
6 . } catch(java.lang.NoClassDefFoundError e) { }
7 . }
8 . void doStuff() { }
9 . public void destroyApp(boolean b) { }
1 0. public void pauseApp() { }
1 1. public void startApp() {go();}
1 2. }
Assuming the application is targeted for CLDC 1.1, what is the result?
- A. Compilation fails because of a problem in line 8.
- B. Compilation fails because of a problem in line 6.
- C. Compilation fails because the class does not contain the required method implementations.
- D. Compilation succeeds.
Correct Answer: D 🗳️
A MIDlet makes its only attempt to register a push connection on a JTWI device using:
PushRegistry.registerConnection(
"datagram://:79", midlet, "10.0.0.???");
Which is true?
- A. The MIDlet accepts datagram push connections on port 79 only from IP addresses in the range 10.0.0.0 to 10.0.0.255.
- B. The call to registerConnection() causes an exception, because the
string 10.0.0.??? is an illegal argument. - C. The MIDlet accepts datagram push connections on port 79 only from IP addresses in the range 10.0.0.100 to 10.0.0.255.
- D. The MIDlet accepts datagram push connections on port 79 only from IP addresses in the range 10.0.0.100 to 10.0.0.255 and on any other port from IP addresses other than those in the range 10.0.0.100 to 10.0.0.255.
Correct Answer: C 🗳️
- A. Person in MIDlet Suite B is allowed restricted access to the Address class in MIDlet Suite A.
- B. Person in MIDlet Suite B is allowed access to the Address class defined in MIDlet Suite
- C. Person in MIDlet Suite B is allowed access to Address class in MIDlet Suite A based on the protection domain.
- D.
- E. Person in MIDlet Suite B is NOT allowed access to the Address class defined in MIDlet Suite A.
Correct Answer: E 🗳️
Which is true when using multiple threads to access a record store?
- A. You must coordinate access to a record store to prevent data corruption.
- B. You must lock a record store prior to access.
- C. The implementation coordinates access, ensuring that record stores will NOT be corrupted.
- D. You CANNOT access a record store with multiple threads.
Correct Answer: A 🗳️
Which two are true about the javax.wireless.messaging.MessageConnection interface?
(Choose two.)
- A. An application can have both client and server mode MessageConnection instances open simultaneously.
- B. It provides methods to create Connector objects.
- C. Threads that are waiting to receive messages must be blocking threads.
- D. This interface is intended for all wireless messaging protocols.
- E. When creating a client mode message, a string that identifies an endpoint on the local host should be passed to Connector.open().
Correct Answer: A,D 🗳️
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