Google Associate-Android-Developer Exam Questions Instant Access

Question 1

What is the incorrect statement about Data Access Object (androidx.room.Dao)?

AData Access Objects are the main classes where you define your database interactions. They can include a variety of query methods.

BThe class marked with @Dao should either be an interface or an abstract class. At compile time, Room will
generate an implementation of this class when it is referenced by a Database.

CAn abstract @Dao class can optionally have a constructor that takes a Database as its only parameter.

DIt is recommended to have only one Dao class in your codebase for all tables.

Answer : D

Question 2

Each time your test invokes onView(), Espresso waits to perform the corresponding UI action or assertion until the following synchronization conditions are met: (Choose three.)

AThe message queue is empty.

BThe message queue is not empty.

CThere are some instances of AsyncTask currently executing a task.

DThere are no instances of AsyncTask currently executing a task.

ESome developer-defined idling resources are not idle.

FAll developer-defined idling res

Answer : A, D, F

Question 3

When your code execution reaches the breakpoint, Android Studio pauses execution of your app. You can then use the tools in the Debugger tab to identify the state of the app. With Evaluate Expression you can

Aexamine the object tree for a variable; expand it in the Variables view

Bevaluate an expression at the current execution point

Cadvance to the next line in the code (without entering a method)

Dadvance to the first line inside a method call

Eadvance to the next line outside the current method

Fcontinue running the app normally

Answer : B

Question 4

In a class PreferenceFragmentCompat. What method is called during onCreate(Bundle) to supply the preferences for this fragment. And where subclasses are expected to call setPreferenceScreen (PreferenceScreen) either directly or via helper methods such as addPreferencesFromResource (int)?

AonCreateLayoutManager

BonCreatePreferences

ConCreateRecyclerView

DonCreateView

Answer : B

Question 5

Enable debugging on your device: If you are using the emulator, this is enabled by default. But for a connected device, you need to

Aenable transfer data from the device in usb connection options.

Benable debugging in the device developer options.

Cenable connection in bluetooth options.

Answer : B

Question 6

To run your local unit tests, follow these steps:

1. Be sure your project is synchronized with Gradle by clicking Sync Project in the toolbar.

2. Run your test in one of the following ways (select possible): (Choose three.)

ATo run a single test, open the Project window, and then right-click a test and click Run .

BTo test all methods in a class, right-click a class or method in the test file and click Run .

CTo run all tests in a directory, right-click on the directory and select Run tests .

DTo run all tests in Project, open the Project window, and then right-click a test and click Run .

Answer : A, B, C

Question 7

For example, we have a BufferedReader reader, associated with the json file through

InputStreamReader. To get a file data we can do this:

AString line; try {
while ((line = reader.readLine()) != null) { builder.append(line);
}
JSONObject json = new JSONObject(builder.toString());
return json;
} catch (IOException | JSONException exception) {
exception.printStackTrace();
}

BJSONObject line; try {
while ((line = reader.readJSONObject ()) != null) { builder.append(line);
}
JSONObject json = new JSONObject(builder.toString());
return json;
} catch (IOException | JSONException exception) {
exception.printStackTrace();
}

CString line; try {
while ((line = reader.readLine()) != null) { builder.append(line);
}
JSONObject json = new JSONObject(builder.toString());
return json;
} catch (RuntimeException|ArrayIndexOutOfBoundsException exception) {
exception.printStackTrace();
}

Answer : A

Google Associate Android Developer Associate-Android-Developer Exam Questions