Kotlin Practice Exam

Kotlin is a statically-typed programming language which is fully interoperable with Java. It was developed by JetBrains and now officially supported by Google for Android development. Kotlin provides expressive syntax and is safer and concise than Java, reducing errors like null pointer exceptions. It is also used for developing server-side applications, web applications, and can also be compiled to JavaScript or native code. Kotlin’s has features, like data classes, lambdas, and higher-order functions, for developing across different platforms.

Certification in Kotlin validates your skills and knowledge in using Kotlin for Android development, server-side programming, and web development.
Why is Kotlin certification important?

• The certification boosts your job prospects in Kotlin related roles.
• Helps advance your careers, for higher-level roles.
• Positions you as top candidates in the industry.
• Attests to your skills in advanced features of Kotlin.
• Provides you credibility.

Who should take the Kotlin Exam?

• Android Developer
• Mobile App Developer
• Backend Developer
• Software Engineer
• Full Stack Developer
• Java Developer (transitioning to Kotlin)
• App Development Lead
• DevOps Engineer (with Kotlin integration skills)
• Cloud Developer
• Web Developer (using Kotlin/JS)

Skills Evaluated

Candidates taking the certification exam on the Kotlin is evaluated for the following skills:

• Kotlin Syntax and Fundamentals: Understanding of variables, data types, control structures, and functions in Kotlin.
• Object-Oriented Programming (OOP): Proficiency in using classes, objects, inheritance, and polymorphism in Kotlin.
• Kotlin Collections: Familiarity with collections, iterators, and collection operations (e.g., maps, lists, sets).
• Kotlin Extensions: Knowledge of how to extend existing classes with new functionality using Kotlin extensions.
• Coroutines and Multithreading: Understanding Kotlin's approach to handling asynchronous programming and concurrency with coroutines.
• Functional Programming Concepts: Using Kotlin’s support for functional programming, including higher-order functions, lambdas, and immutability.
• Error Handling: Effective error handling through exceptions and Kotlin’s specific mechanisms for null safety.
• Android Development (for Android-focused certification): Applying Kotlin in Android app development, including UI components, data storage, and integrations with APIs.
• Integration with Java: Knowledge of how Kotlin works with existing Java libraries and frameworks.
• Kotlin Testing: Proficiency in testing Kotlin code, including unit testing and test-driven development (TDD).

Kotlin Certification Course Outline
The course outline for Kotlin certification is as below -

1. Kotlin Fundamentals

• Variables and Data Types
• Functions and Lambda Expressions
• Control Structures (if, when, loops)
• Null Safety and Safe Calls

2. Object-Oriented Programming in Kotlin

• Classes and Objects
• Inheritance and Interfaces
• Abstract Classes and Methods
• Visibility Modifiers and Access Control

3. Functional Programming in Kotlin

• Higher-Order Functions
• Lambdas and Anonymous Functions
• Immutable Collections and Data Structures
• Functional Programming Patterns in Kotlin

4. Advanced Kotlin Features

• Extension Functions and Properties
• Delegation in Kotlin
• Inline Functions and Reified Types
• Destructuring Declarations

5. Coroutines and Asynchronous Programming

• Basics of Coroutines
• Managing Threads and Coroutines
• Handling Delayed Results and Deferred Objects
• Asynchronous Tasks and Parallelism

6. Working with Collections

• Lists, Sets, and Maps
• Collection Operations (filter, map, fold, etc.)
• Sequences and Lazy Evaluation

7. Kotlin and Android Development

• Setting Up Kotlin in Android Studio
• Android UI and Views in Kotlin
• Networking, APIs, and Kotlin on Android
• Persisting Data with SQLite and Room

8. Kotlin with Java

• Interoperability with Java Code
• Using Java Libraries in Kotlin
• Calling Kotlin from Java and vice versa

9. Testing in Kotlin

• Unit Testing with JUnit and Kotlin
• Mocking and Test Automation Tools
• Test-Driven Development (TDD) in Kotlin

10. Kotlin for Web Development

• Kotlin/JS for Front-End Development
• Using Kotlin with Frameworks like React
• Setting Up Web Projects with Kotlin