Android architecture overview (Linux kernel, ART, framework) in Android Kotlin - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is the role of the Linux kernel in Android architecture?

The Linux kernel manages hardware, memory, processes, and security. It acts as the foundation of Android, providing core system services like drivers and power management.

beginner

What does ART stand for and what is its purpose?

ART stands for Android Runtime. It runs Android apps by converting app code into machine code ahead of time, improving app performance and battery life.

intermediate

Name three main components of the Android framework layer.

The Android framework includes Activity Manager (manages app lifecycle), Content Providers (manage data sharing), and View System (handles UI elements).

beginner

How does the Android framework help app developers?

It provides reusable APIs and tools to build apps easily without managing hardware or low-level system details, like UI controls, resource management, and notifications.

intermediate

Explain the relationship between Linux kernel, ART, and Android framework.

Linux kernel is the base managing hardware. ART runs app code on top of the kernel. The Android framework provides APIs and services that apps use, sitting above ART.

Which layer in Android architecture directly manages hardware components?

A Android framework

B Android Runtime (ART)

C Application layer

D Linux kernel

The Linux kernel manages hardware like CPU, memory, and drivers.

What is the main function of ART in Android?

A Run app code efficiently

B Manage user interface

C Handle hardware drivers

D Store app data

ART runs app code by compiling it ahead of time for better performance.

Which Android framework component manages app lifecycle and navigation?

A Activity Manager

B View System

C Content Providers

D Linux kernel

Activity Manager controls app lifecycle and screen navigation.

Which layer provides APIs for building user interfaces in Android?

A Android Runtime

B Android framework

C Linux kernel

D Hardware Abstraction Layer

The Android framework includes UI APIs like Views and Layouts.

What is the correct order from lowest to highest layer in Android architecture?

A ART → Linux kernel → Framework

B ART → Framework → Linux kernel

C Linux kernel → ART → Framework

D Framework → ART → Linux kernel

Linux kernel is the base, ART runs on top, and framework is above ART.

Describe the main responsibilities of the Linux kernel, ART, and Android framework in Android architecture.

Think about how each layer supports the one above it.

Explain how the Android framework helps developers build apps without dealing with hardware details.

Focus on what the framework offers to simplify app creation.