Top 21
Company roadmap
Updated weekly · Last refresh Sep 21D
DIAGNAL Interview Questions
The questions to prepare for DIAGNAL interviews, across all roles. Questions from real interview reports rank first. Updated daily.
21questions
~3htotal time
Track your progressSign up free to work through all 21 questions and resume where you left off.
Start practicing free →1
System DesignStart here. 4 questions · ~32 min
Google Docs-Style Collaboration DesignHard
Evaluates collaboration features, consistency, and real-time sync design.
collaborationDDIAGNAL
OTT Platform ArchitectureMedium
Tests system design for media streaming and related services.
architectureDDIAGNAL
Collaborative Web App ArchitectureHard
Evaluates system design for real-time collaboration and scalability.
collaborationarchitectureDDIAGNAL
More System Design questions with a free account
2
Technical Fundamentals11 questions · ~88 min
Using React Hooks and Lifecycle MethodsMedium
Assesses knowledge of modern React patterns and lifecycle concepts.
reactDDIAGNAL
Explain React Class vs Functional ComponentsEasy
Tests understanding of React component types and when to use each.
javascriptreactDDIAGNAL
UseMemo vs React.memo in ReactMedium
Evaluates memoization strategies and performance optimization in React.
performance optimizationreactDDIAGNAL
More Technical Fundamentals questions with a free account
Sign up to see every question
Create a free account to unlock this list and practice real interview questions.
3
Behavioral & Leadership4 questions · ~32 min
More Behavioral & Leadership questions with a free account
4
More topics2 questions · ~16 min
Security in React NativeMedium
Checks security considerations in mobile React Native apps.
SecurityDDIAGNAL
React Native Security ConsiderationsMedium
Evaluates security awareness in mobile cross-platform development.
SecurityDDIAGNAL
The finish line: interview-readyComplete all 21 questions to finish this plan.