OA0-002 Online Practice Questions and Answers

Which of these is the incorrect explanation of the androiddebuggable attribute of the AndroidManifest.xm tag?

A. If not set, it will be handled as "false".

B. It is necessary to set this to "true" in order to use Eclipse's breakpoint function.

C. The android:debuggable setup value can be read by an application.

D. When releasing the application, deleting android:debuggable is recommended.

When creating the following Android project, which is the correct combination of (1)~(3)to add to the AndroidManifest.xml?

A. Option a

B. Option b

C. Option c

D. Option d

Which of these is the incorrect explanation of the Java Native Interface(JNI)?

A. JNI does not provide garbage collection on the native side, outside the memory resources of the Java Virtual Machine.

B. Even if native code is used with JNI, it does not necessarily mean an improvement in the application processing speed.

C. A Java exception can be generated from a native method, but it cannot be caught on the Java side.

D. Header files generated on the Java side are included and implemented in the native (C/C++) side source code.

Which is the tool that creates certificates for signing an application?

A. adb

B. etc 1 tool

C. fastboot

D. keytool

Which of these is the incorrect description of the code executed when a Button widget is clicked?

A. Option a

B. Option b

C. Option c

D. Option d

For playing an audio file, where does the Android Developer's Guide recommend placing the file?

A. res/raw

B. res/values

C. data/data

D. system/data

Which code acquires a MediaPlayer class instance?

A. MediaPlayer.create(this, R.raw.music);

B. newMediaPlayer(this, R.raw.music);

C. MediaPlayer.getSource(this, R.raw.music);

D. MediaPlayer.newInstancefthis, R.raw.music),

Which is the correct procedure to play an MP3 format file using the MediaPlayer class?

A. Option a

B. Option b

C. Option c

D. Option d

Of the size units which can be specified by Android, which is device independent?

A.px

B. dp (dip)

C. sp

D. pt

Which of these is the incorrect description of this AndroidManifest.xml content?

A. It is an executable application for terminals of Android 1.6 and later.

B. The configured Activity is the Activity which will be the application endpoint.

C. Since "android:label" is not set in the activity tag, nothing will be displayed in the application header.

D. This application version is 1.

Which operation is required when debugging on a handset through the network using the Android Debug Bridge(adb)?

A. Set the port number to be used as5554.

B. Specify the handset's IP address as an adb startup option.

C. Set the environmental variable ADBHOST as the handset's IP address.

D. Check "Allow ADB debug connection" on the handset settings.

Which of these is the incorrect explanation of external storage using an SD card?

A. SD cards support the FAT file system.

B. Directories of an SD card can be acquired by Environment.getExternalStorageDirectory().

C. Linux file system permissions do not exist on an SD card.

D. Files on SD cards cannot be handled by Java.io.File.

Which is the file system of the disk image created by mksdcard command?

A. NTFS

B. FAT32

C. ext3

D. AndroidFS

Which is the tool provided by Android Development Tools Plugin to create and edit screens with Eclipse?

A. Resource Editor

B. Layout Editor

C. Menu Editor

D. View Editor

The following manifest file is used to conduct Android unit tests. Which is the correct description that goes into (1)?

A. android test

B. android.test.runner

C. android.framework-tests

D. android.framework