Question 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)Wi-Fi hot spots

Accepted Answer

Android OS provides a wide range of system services including location services, sensor readings (such as accelerometer, gyroscope, etc.), and Wi-Fi services (including scanning for Wi-Fi hotspots). These services are integral to many apps for providing rich user experiences.

Question 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

Accepted Answer

Gargenta's Design Philosophy of "Always be whole and complete" suggests that at any point in the development process, the application should be functional and complete in itself, with each new addition seamlessly integrating as a new feature without disrupting the existing functionality.

Question 3

An Android application is a loose collection of content providers, activities, broadcast receivers, and services.

Accepted Answer

An Android application is indeed composed of content providers, activities, broadcast receivers, and services, which work together to create a functional app. Each component serves a different purpose and can operate independently or in conjunction with others.

Question 4

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

Accepted Answer

The update activity is not listed as one of the activities being created for the YAMBA project.

Question 5

The timeline receiver will receive messages from the Android system.

Accepted Answer

The term "timeline receiver" is not a standard term associated with receiving messages from the Android system. In Android development, components such as Broadcast Receivers are used to listen for and handle messages or intents from the Android system or other applications.

Question 6

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

Accepted Answer

A content provider in Android is the standard interface that connects data in one process with code running in another process. It is designed to share data with other applications or parts of the same application, making it the correct choice for exposing status data to the rest of the Android system.

Question 7

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.

Accepted Answer

Network latency can cause delays in data transmission, leading to sluggish UI behavior or crashes during network calls.

Question 8

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

Accepted Answer

Gargenta approaches the problem of an app acting sluggishly due to network latency by implementing multithreading. This allows the app to perform network operations in the background, preventing the UI from freezing and improving the user experience.

Quiz 4: Android OS and Application Development: Services, Philosophy, and Components

The android OS comes with many useful system services, which include processes you can easily ask for things such as your..

What does the Gargenta mean in his Design Philosophy when he says that the project will, "Always be whole and complete"?

An Android application is a loose collection of content providers, activities, broadcast receivers, and services.

Which of the following is NOT an activity we will be creating for the YAMBA project?

The timeline receiver will receive messages from the Android system.

Status data will be exposed to the rest of the Android system via:

If the UI begins to behave sluggishly or crash while making network calls, this is likely due to…

How does Gargenta approach the problem of the app acting sluggishly due to network latency?