1. A midlet is a Java class that extends the abstract class: |
| javax.microedition.MIDlet |
| javax.microedition.midlet |
| javax.microedition.midlet.MIDlet |
javax.microedition.midlet.midlet
|
2. Which one of the following methods of the MIDlet abstract class must be implemented by a midlet: |
| initApp, startApp |
| startApp, destroyApp |
| startApp, pauseApp, destroyApp |
initApp, startApp, pauseApp, destroyApp
|
3. After compiling your midlet, you must process it with a command to ensure that it is valid before use by the Kilo virtual machine (KVM). What is the name of that command? |
| midp |
| javac-bootclasspath |
| preverify |
jar
|
4. A Java Application Descriptor (JAD) file is a text file that is similar to a manifest, except that it is not packaged in a JAR file. Some of the shared attributes that must have identical values are: MIDlet-Name, MIDlet-Version, and MIDlet-Vendor. |
| The ones in the descriptor override those in the manifest |
| The ones in the manifest override those in the descriptor |
|
|
5. When downloading application descriptors (.jad files) from a web server, the web server must return a MIME type of: |
| text/vnd.sun.j2me.midp |
| text/vnd.sun.j2me.jad |
| text/vnd.sun.j2me.app-descriptor |
text/vnd.sun.j2me.midapp
|
6. A midlet suite is a set of midlets that are packed together into a single JAR file. Midlets within the same suite: |
| Can share the classes and resources contained in the JAR file |
| Cannot share the classes and resources contained in the JAR file |
|
|
7. Midlets from different suites: |
| Can interact directly. |
| Cannot interact directly. |
|
|
8. What is the difference between a configuration (such as the CLDC) and a profile (such as the MIDP)? |
| a configuration defines the set of class libraries available for a particular domain of devices, and a profile provides I/O and network APIs. |
| a configuration defines a vertical set of classes that a profile can use. |
| a configuration defines a minimum set of class libraries for a wide range of devices, and a profile defines the set of APIs available for a particular family of devices. |
a profile is the foundation for a configuration.
|
9. All MIDP implementations are required to support what image format? |
| GIF |
| JPG |
| BMP |
PNG
|
10. If a midlet needs to receive high-level events from the implementation, which interface should it implement? |
| ActionListener |
| CommandListener |
| Windows Listener |
ChoiceListener
|
11. All MIDP GUI classes are contained in what package? |
| javax.microedition.gui |
| javax.microedition.lcd |
| javax.microedition.lcdui |
javax.microedition.display
|
12. The MIDP user interface API is a subset of the AWT/ Project Swing libraries. |
| True |
| False |
|
|
13. Which class would you use to write applications to access low-level input events or to issue graphics calls for drawing to the display? |
| Display |
| Command |
| Screen |
Screen
|
14. Which of the following statements is true regarding the Generic Connection framework: |
| The CLDC provides an implementation for the HTTP protocol. |
| All MIDP implementations must provide support for the HTTP protocol. |
| The MIDP provides implementation for datagram and socket connections. |
The Connection interface is part of the java.net package.
|
15. The heart of the Generic Connection framework is: |
| javax.microedition.Connection |
| javax.microedition.Connector |
| javax.microedition.StreamConnection |
javax.microedition.HttpConnection
|
16. What is the correct syntax, using the Generic Connection framework, to open an HTTP connection: |
| Connection c = Connection.open("http://developer.java.sun.com"); |
| Connector c = Connector.open("http://developer.java.sun.com"); |
| Connection c = Connector.open("http://developer.java.sun.com"); |
Connector c = Connection.open("http://developer.java.sun.com");
|
17. The MIDP provides a mechanism for MIDlets to persistently store data in a platform-dependent file and retrieve it later. This mechanism is: |
| Object Serialization |
| JDBC |
| RMS |
ODBC
|
18. A Java virtual machine1 (JVM) supporting CLDC has no support for: |
| Floating point numbers |
| Reflection |
| JNI |
All of the above
|
19. Which of the following non-exception classes are inherited from the Java 2 Standard Edition 1.3 java.util package by the CLDC: |
| Calendar, Date, Enumeration, Hashtable, Stack, Vector |
| Calendar, Date, Enumeration, Hashtable, Random, Stack, Timer, Vector |
| Calendar, Date, Enumeration, Hashtable, Stack, Vector, StringTokenzier |
All of the java.util classes are inherited
|
20. Which of the following techniques can be used for wireless session tracking? |
| Cookies |
| URL Rewriting |
| Hidden Fields |
None of the above
|
