Android Questions and Answers for written exams
1. bmgr tool is used to
a)take backup of the applications
b)to restore operations
c)wipe archived data for a specific application
d)all of the above
2. foreground service
a)starts when you call start foreground()
b)may or may not provide a notification for the status bar
c)notification can't be dismissed unless the service is either stopped or removed from the
d)both a & c
3. A1,A2,A3 and A4 are activities called using intents.Then A1-A4-A2--A3.A4 calls A2 with
intent flag FLAG_ACTIVITY_NO_HISTORY.When finish method is called on A3, What will be the
currtent running activity?
4. A1,A2,A3 and A4 are activities called using intents.Then A1-A2-A4--A3.A2 calls A4 with
intent flag FLAG_ACTIVITY_CLEAR_TOP.When finish() method is called on A3, what will be the
current running activity?
5. A1,A2,A3 and A4 are activities called using intents.Then A1-A2-A3-A4. A3 calls A4 with no
intent flag, when finish() method called on A4. What will be the current running activity?
6. The plus(+) means in statement android:id="@+id/my_id"?
a) Identify it as an id resource
b) Create new id and add to resources
c) XML parser should parse and exapnd id string
d) Both a & b.
7. When you want system to run the service indefinitely, by restarting it when get killed, use
8) Android system uses intents to
a) broadcast system intents
b) broadcast custom intents
c) To invoke other applications from your application.
d) All of the above.
9) 'Screen has turned off' is an example
a) Normal broadcast
b) Ordered broadcast
c) background operation
10) If you try to acces the column which does not exit, system throws
11) Maximum results returned by getFromLocationName() method can be
12. The methods startForeground() and stopForeground() were introduced in which API level.
13. Should always first check availability of audio effects by calling the following method on
the corresponding audio effect class.
c) isvaluable ()
14. Applications that require filtering based on screen size can use the attributes.
15. what is false with respect to onBind()
a) is called when another component wants to bind with a service
b) calling startService() results in a call to onBind()
c) if you don't want to allow binding then return null
d) if you want to allow binding then return Ibinder object
16)Android is licensed under which open source licensing license? | Android
A. Gnu's GPL
17)Although most people's first thought when they think of Android is Google, Android is not actually owned by Google. Who owns the Android platform? | Android
A. Oracle Technology
C. Open Handset Alliance
D. The above statement is and Android is owned by Google
18)As an Android programmer, what version of Android should you use as your minimum development target? | Android
A. Versions 1.6 or 2.0
B. Versions 1.0 or 1.1
C. Versions 1.2 or 1.3
D. Versions 2.3 or 3.0
19)What was Google's main business motivation for supporting Android? | Android
A. To level the playing field for mobile devices
B. To directly compete with the iPhone
C. To corner the mobile device application market for licensing purposes
D. To allow them to advertise more
20)What was the first phone released that ran the Android OS? | Android
A. Google gPhone
B. T-Mobile G1
C. Motorola Droid
D. HTC Hero
21)From a phone manufacturer's point of view, what makes Android so great? | Android
A. Aside from some specific drivers, it provides everything to make a phone work
B. It makes the hardware work better
C. It allows them to compete with Apple's iPhone
D. It allows users to create apps, generating revenue for the companies
22)What is a funny fact about the start of Android? | Android
A. It was orginaly going to be called UFO
B. The first version of Android was released without an actual phone on the market
C. Androids main purpose was to unlock your car door when you left the keys inside of it.
D. Was going to be a closed source application to make more money for its company.
23)What year was the Open Handset Alliance announced? | Android
24)A device with Android installed is needed to develop apps for Android.
25)Android tries hard to _____low-level components, such as the software stack, with interfaces so that vendor-specific code can be managed easily.
26)Google licensed some proprietary apps. | Android
27)What part of the Android platform is open source? | Android
A. low-level Linux modules
B. all of these answers #The entire stack is an open source platform
C. native libraries
D. application frame work
E. complete applications
28)When did Google purchase Android? | ANdroid
29)Android releases since 1.5 have been given nicknames derived how? | Android
A. Adjective and strange animal
C. Something that starts w/ 'A' -> Something that starts w/ 'B'...
D. American states
30)Which one is not a nickname of a version of Andriod? | Android
31)Android doesn't make any assumptions about a device's screen size, resolution, or chipset.:
32)Which Android version had the greatest share of the market as of January 2011? | Android
33)Which piece of code used in Android is not open source? | Android
A. Keypad driver
B. WiFi? driver
C. Audio driver
D. Power management
34)Android is built upon the Java Micro Edition (J2ME) version of Java. | Android
35)Which among these are NOT a part of Android's native libraries? | Android
36)Android is based on Linux for the following reason. | Android
D. All of these
37)What operating system is used as the base of the Android stack? | Android
38)What year was development on the Dalvik virtual machine started? | Android
39)What is a key difference with the distribution of apps for Android based devices than other mobile device platform applications? | Android
A. Applications are distributed by Apple App Store only
B. Applications are distributed by multiple vendors with different policies on applications.
C. Applications are distributed by multiple vendors with the exact same policies on applications.
D. Applications are distributed by the Android Market only.
40)When developing for the Android OS, Java byte code is compiled into what? | Android
A. Java source code
B. Dalvik application code
C. Dalvik byte code
D. C source code
41)What does the .apk extension stand for? | Android
A. Application Package
B. Application Program Kit
C. Android Proprietary Kit
D. Android Package
42)When you distribute your application commercially,you'll want to sign it with your own key. | Android
43)How does Google check for malicious software in the Android Market? | Android
A. Every new app is scanned by a virus scanner
B. Users report malicious software to Google
C. Google employees verify each new app
D. A seperate company monitors the Android Market for Google
44)Which of these are not one of the three main components of the APK? | Android
A. Dalvik Executable
C. Native Libraries
45)What is the name of the program that converts Java byte code into Dalvik byte code? | Android
A. Android Interpretive Compiler (AIC)
B. Dalvik Converter
C. Dex compiler
D. Mobile Interpretive Compiler (MIC)
46)Android Applications must be signed. | Android
A. After they are installed
B. Before they are installed
D. Within two weeks of installation
47)Which of the following are not a component of an APK file? | Android
B. All of these are components of the APK
C. Native Libraries
D. Dalvik executable
48)The AWT and Swing libraries have been removed from the Android library set. | Android
49)The R.java file is where you edit the resources for your project. | Android
50)What is contained within the manifest xml file? | Android
A. The permissions the app requires
B. The list of strings used in the app
C. The source code
D. All other choices
51)What is contained within the Layout xml file? | Android
A. Orientations and layouts that specify what the display looks like.
B. The permissions required by the app.
C. The strings used in the app.
D. The code which is compiled to run the app.
52)The emulated device for android. | Android
A. Runs the same code base as the actual device, all the way down to the machine layer.
B. Is more of a simulator, and acts as a virtual machine for the Android device.
C. Runs the same code base as the actual device, however at a higher level.
D. An imaginary machine built on the hopes and dreams of baby elephants.
53)Your Java source code is what is directly run on the Android device. | ANdroid
54)The Emulator is identical to running a real phone EXCEPT when emulating/simulating what? | Android
D. The emulator can emulate/simulate all aspects of a smart phone.
55)How is a simulator different from an emulator? | Android
A. Emulators are only used to play old SNES games, simulators are used for software development
B. The emulator is shipped with the Android SDK and third party simulators are not
C. The emulator can virtualize sensors and other hardware features, while the simulator cannot
D. The emulator imitates the machine executing the binary code, rather than simulating the behavior of the code at a higher level.
56) The R file is a(an) generated file | Android
D. None of the above
57)An activity can be thought of as corresponding to what? | Android
A. A Java project
B. A Java class
C. A method call
D. An object field
58)To create an emulator, you need an AVD. What does it stand for? | Android
A. Android Virtual Display
B. Android Virtual Device
C. Active Virtual Device
D. Application Virtual Display
59)The Android SDK ships with an emulator. | Android
60)The ___________ file specifies the layout of your screen. | Android
A. Layout file
B. Manifest file
C. Strings XML
D. R file
61)The manifest explains what the application consists of and glues everything together. | Android
62)The Android Software Development Kit (SDK) is all you need to develop applications for Android.
63)What is the driving force behind an Android application and that ultimately gets converted into a Dalvik executable? | Android
A. Java source code.
C. the emulator.
D. the SDK
64)While developing Android applications, developers can test their apps on...
A. Emulator included in Android SDK
B. Physical Android phone
C. Third-party Emulators (Youwave, etc.)
D. All three options will work.
65) How can I check if an activity is already running before starting it?
A. NEW_TASK_LAUNCH in the startActivity() method call.
B. FLAG_ACTIVITY_NEW_TASK in the startActivity() method call.
C. FLAG_ACTIVITY_SINGLE_TOP in the startActivity() method call.
D. By using <category android:name="android.intent.category.LAUNCHER" /> this category attribute.