Programming & Coding
Explain the difference between abstract class and interface in Java (or your preferred language).
How would you optimize a SQL query that is running slow?
Can you explain time complexity of HashMap get/put operations?
Write a program to detect duplicates in a large dataset (without using extra space).
What’s the difference between synchronous and asynchronous processing? Give examples.
Databases
What are indexes in a database and when would you avoid using them?
Explain normalization and denormalization with examples.
How do you handle a scenario where a query returns inconsistent results across environments?
System & Integration
How do you design an API contract for a system that needs to interact with multiple clients?
Preguntas de entrevista [1]
Pregunta 1
Programming & Coding
Explain the difference between abstract class and interface in Java (or your preferred language).
How would you optimize a SQL query that is running slow?
Can you explain time complexity of HashMap get/put operations?
Write a program to detect duplicates in a large dataset (without using extra space).
What’s the difference between synchronous and asynchronous processing? Give examples.
Databases
What are indexes in a database and when would you avoid using them?
Explain normalization and denormalization with examples.
How do you handle a scenario where a query returns inconsistent results across environments?
System & Integration
How do you design an API contract for a system that needs to interact with multiple clients?
Simple interview. I got asked about my projects and stuff about expected behavior at the company. The technical side of the interview included problems from SQL and Python. Overall, not a bad process.
Solicité el puesto a través de la escuela superior o la universidad. El proceso duró 2 meses. Acudí a una entrevista en Cognizant
Entrevista
first round was written test followed by communication assessment followed by one round of technical + HR interview not that hard , this was as a part of campus placement
Interview was easy with basic technical questions like oops concepts, core JAVA, spring boot, microservcies and SQL. Simple coding questions like reverse a string, anagram, linked list. It was a nice experience.