Cognizant
American multinational information technology services and consulting company.
4 Rounds
~21 Days
Medium
The Interview Loop
Recruiter Screen (30 min)
Standard fit check, behavioral questions, and resume overview.
Technical Loop (3-4 Rounds)
Deep dive into domain knowledge, coding, and system design.
Interview Question Bank
Frontend Engineer
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Coding
•
medium
Write a custom React hook called 'useFetch' that takes a URL and returns data, loading, and error states.
#Custom Hooks
#useEffect
#useState
#API Integration
Frontend Engineer
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Coding
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medium
Implement a paginated data table component in React that fetches data from a mock API.
#Component Design
#Pagination
#API Integration
Frontend Engineer
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Technical
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medium
How does React's Virtual DOM work, and what is the reconciliation process (Fiber)?
#Virtual DOM
#Reconciliation
#React Fiber
Frontend Engineer
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Technical
•
medium
When should you use useMemo and useCallback? What are the performance trade-offs?
#Performance Optimization
#Hooks
#Memoization
Frontend Engineer
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Technical
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medium
Compare Redux Toolkit with the React Context API. When would you choose one over the other for an enterprise client?
#State Management
#Redux
#Context API
#Architecture
Frontend Engineer
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Technical
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easy
How do you handle prop drilling in a deeply nested component tree?
#Architecture
#State Management
#Component Composition
Frontend Engineer
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Technical
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hard
Explain React Server Components (RSC) and how they differ from Client Components in Next.js.
#Next.js
#Server Components
#Rendering Strategies
Difficulty Radar
Based on recent AI-sourced data.
Meet Your Interviewers
The "Standard" Interviewer
Senior EngineerFocuses on core competencies, system constraints, and clear communication.
SimulateUnwritten Rules
Think Out Loud
Always explain your thought process before writing code or drawing architecture.