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
Software Engineer
•
Technical
•
medium
Explain the internal working of a HashMap in Java 8. What happens when a collision occurs?
#Data Structures
#Java Collections
#Hashing
Software Engineer
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Technical
•
medium
What are the new features introduced in Java 8? Write a Stream API snippet to filter a list of employees by age greater than 30.
#Java 8
#Stream API
#Lambda Expressions
Software Engineer
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Technical
•
easy
What is the difference between the Runnable and Callable interfaces in Java?
#Multithreading
#Concurrency
Software Engineer
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Technical
•
medium
Explain the difference between HashMap and ConcurrentHashMap in Java.
#Collections
#Concurrency
Software Engineer
•
Technical
•
medium
How does Garbage Collection work in Java, and what are the different types of garbage collectors?
#JVM
#Memory Management
#Garbage Collection
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.