Kotlin Kotlin Android Development 3

Question 1

What is `WorkManager` used for in Android?

Accepted Answer

Scheduling deferrable background work that should survive app restarts

Answer

Managing coroutine workers

Answer

Handling real-time push notifications

Answer

Managing in-app purchases

Question 2

What does the `@Dao` annotation mark in Room?

Accepted Answer

A Data Access Object interface that defines database queries

Answer

A database entity class

Answer

A database migration class

Answer

A room configuration file

Question 3

What annotation marks a class as a Room database entity?

Accepted Answer

@Entity

Answer

@Table

Answer

@Model

Answer

@Schema

Question 4

What is DataStore in Android Jetpack?

Accepted Answer

A data storage solution that replaces SharedPreferences using Flow

Answer

A relational database library

Answer

A file storage system

Answer

A content provider abstraction

Question 5

What does `rememberCoroutineScope` provide in Jetpack Compose?

Accepted Answer

A CoroutineScope tied to the composition that allows launching coroutines from non-suspend UI event handlers

Answer

A scope tied to the application lifecycle

Answer

A way to remember the last coroutine result

Answer

A scope for database operations

Question 6

What is the role of `NavController` in Android's Navigation Component?

Accepted Answer

Manages app navigation between destinations and the back stack

Answer

Controls the app's network requests

Answer

Controls view animations

Answer

Manages ViewModel injection