Android+core Java Quiz
Test your knowledge of Android and Core java by taking this timed quiz.
- 1.
The android OS comes with many useful system services, which include processes you can easily ask for things such as your..
- A.
All of these and more.
- B.
Location
- C.
Sensor Readings
- D.
WiFi? Hot Spots
Correct Answer
A. All of these and more. -
- 2.
What does the Gargenta mean in his Design Philosophy when he says that the project will, "Always be whole and complete"?
- A.
He means that when we finish the entire project we will have a working application, even though there will be points along the way when we will stop and the application will not run.
- B.
He means that the program must always be able to compile.
- C.
He means that we will work on the program by adding self contained chunks to it so that at every stopping point the application runs as though it were a whole and complete application. Each additional chunk simply adds a new functionality to the application.
- D.
None of the above
Correct Answer
C. He means that we will work on the program by adding self contained chunks to it so that at every stopping point the application runs as though it were a whole and complete application. Each additional chunk simply adds a new functionality to the application. -
- 3.
How does Gargenta approach the problem of the app acting sluggishly due to network latency?
- A.
Starting over
- B.
Switching API levels
- C.
Refactoring code
- D.
Multithreading
Correct Answer
D. Multithreading -
- 4.
Status data will be exposed to the rest of the Android system via:
- A.
Intents
- B.
A content provider
- C.
Network receivers
- D.
Altering permissions
Correct Answer
B. A content provider -
- 5.
If the UI begins to behave sluggishly or crash while making network calls, this is likely due to...
- A.
Network latency
- B.
Hardware malfunctions
- C.
Virus on the Server
- D.
Activity manager contains too much.
Correct Answer
A. Network latency -
- 6.
Which of the following is NOT an activity we will be creating for the YAMBA project?
- A.
Preferences Activity
- B.
Update Activity
- C.
Timeline Activity
- D.
Status Activity
Correct Answer
B. Update Activity -
- 7.
The timeline receiver will receive messages from the Android system.
- A.
True
- B.
False
Correct Answer
B. False -
- 8.
Which answer is not part of the design philosophy talked about in chapter five?
- A.
Always whole and complete
- B.
Small increments
- C.
Lagre increments
- D.
Refactoring code
Correct Answer
C. Lagre increments -
- 9.
App Widgets are can be place on the home screen by the user to check for updates are available?
- A.
True
- B.
False
Correct Answer
A. True -
- 10.
An Android application is a loose collection of content providers, activities, broadcast receivers, and services.
- A.
True
- B.
False
Correct Answer
A. True -
- 11.
Creating a UI (User Interface) in Android requires careful use of...
- A.
Java and SQL
- B.
XML and Java
- C.
XML and C++
- D.
Dreamweaver
Correct Answer
B. XML and Java -
- 12.
A good example app should demonstrate most of the aspects of the application framework that are unique to Android.
- A.
True
- B.
False
Correct Answer
A. True -
- 13.
What will services be used for in the Yamba project?
- A.
Recompile the source code
- B.
It will update tweets periodically in the background
- C.
The services will pause the app
- D.
Configures the user interface
Correct Answer
B. It will update tweets periodically in the background -
- 14.
Lists and adapters are more organizational aids than user interface elements in Android.
- A.
True
- B.
False
Correct Answer
A. True -
- 15.
What built-in database is Android shipped with?
- A.
SQLite
- B.
Apache
- C.
MySQL
- D.
Oracle
Correct Answer
A. SQLite -
- 16.
YAMBA stands for Yet Another Mobile Banking App.
- A.
True
- B.
False
Correct Answer
B. False -
- 17.
There can be only one running activity at a given time.
- A.
True
- B.
False
Correct Answer
A. True -
- 18.
Services have any user interface components
- A.
True
- B.
False
Correct Answer
B. False -
- 19.
Broadcast receivers are Android’s implementation of a system-wide publish/subscribe mechanism, or more precisely, what design pattern?
- A.
Observer
- B.
Facade
- C.
Mediator
- D.
Command
Correct Answer
A. Observer -
- 20.
An activity in a stopped state is doing nothing.
- A.
True
- B.
False
Correct Answer
B. False -
- 21.
Application contexts are independent of the activity life cycle.
- A.
True
- B.
False
Correct Answer
A. True -
- 22.
When the activity is not in focus, but still visible on the screen it is in?
- A.
Running state
- B.
Paused state
- C.
Stopped state
- D.
Destroyed state
Correct Answer
B. Paused state -
- 23.
In an explicit intent, the sender specifies the type of receiver.
- A.
True
- B.
False
Correct Answer
B. False -
- 24.
An implicit intent is the sender specifies the type of receiver?
- A.
True
- B.
False
Correct Answer
A. True -
- 25.
Intents
- A.
Are messages that are sent among major building blocks
- B.
Trigger activities to being, services to start or stop, or broadcast
- C.
Are asynchronous
- D.
All of these
Correct Answer
D. All of these -
- 26.
There is no guarantee that an activity will be stopped prior to being destroyed.
- A.
True
- B.
False
Correct Answer
A. True -
- 27.
Which of the following is NOT a state in the lifecycle of a service?
- A.
Starting
- B.
Running
- C.
Destroyed
- D.
Paused
Correct Answer
D. Paused -
- 28.
What is an Activity?
- A.
A single screen the user sees on the device at one time
- B.
A message sent among the major building blocks
- C.
A component that runs in the background without any interface.
- D.
Context referring to the application environment.
Correct Answer
A. A single screen the user sees on the device at one time -
- 29.
When an activity doesn't exist in memory it is in.
- A.
Starting state
- B.
Running state
- C.
Loading state
- D.
Inexistent state.
Correct Answer
A. Starting state -
- 30.
What runs in the background and doesn't have any UI components?
- A.
Intents
- B.
Content Providers
- C.
Services
- D.
Applications
Correct Answer
C. Services -
- 31.
Which of the following is the most "resource hungry" part of dealing with Activities on Android
- A.
Closing an app
- B.
Suspending an app
- C.
Opening a new app
- D.
Restoring the most recent app
Correct Answer
C. Opening a new app -
- 32.
The XML file that contains all the text that your application uses.
- A.
Stack.xml
- B.
Text.xml
- C.
Strings.xml
- D.
String.java
Correct Answer
C. Strings.xml -
- 33.
What file is responsible for glueing everthing together , explaining what the applicatin consists of, what its main building blocks are, ext...?
- A.
Layout file
- B.
Strings XML
- C.
R file
- D.
Manifest file
Correct Answer
D. Manifest file -
- 34.
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.
Correct Answer
D. All three options will work. -
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Current Version
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Mar 15, 2022Quiz Edited by
ProProfs Editorial Team -
Mar 27, 2014Quiz Created by
Dbhacker9988
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