Level 1 · Beginner
Programming Languages
Kotlin Fundamentals
Verify your foundational knowledge of Kotlin, including null safety, data classes, coroutines, extension functions, collections, sealed classes, lambdas, and basic Android concepts.
Skills Tested
- Null Safety
- Data Classes
- Coroutines
- Extension Functions
- Collections
- Sealed Classes
- Lambdas & Scope Functions
- Android Basics
Assessment Details
20
Questions
78%
To Pass
30 min
Time Limit
—
Pass Rate
- Questions are drawn randomly from the question pool each attempt
- Answers cannot be reviewed after submission
- Escalating cooldown between attempts: 8h, 24h, 72h, then 1 week
- Certificates include a shareable verification token
- Open Badges 2.0 compliant. Add to LinkedIn and digital wallets
Track
Programming Languages → Kotlin