Egon Zehnder International Big Data Engineer Interview Questions and Answers

Q1. HVAC, FLS & Experience
Add your answer

Q1. Software Proficiency Test
Add your answer

Hacker Rank test with medium difficulty

Q1. Technical discussion mainly around system design, different architectures, problem solving and coding question may be asked.
Add your answer

A case study for a problem statement

Q1. Basic Javascript questions- guess the output
Add your answer
Q2. What is js hoisting?
Ans. 
JS hoisting is a mechanism where variable and function declarations are moved to the top of their scope.
• Variable declarations are hoisted but not their values

• Function declarations are fully hoisted

• Let and const declarations are not hoisted
Answered by AI
Add your answer
Q3. Why redux is used and advantages?
Ans. 
Redux is used for managing state in complex applications. It provides a centralized store and predictable state updates.
• Redux helps in managing state in large applications with multiple components

• It provides a centralized store for all the application state

• Redux allows for predictable state updates through actions and reducers

• It enables easy debugging and time-travel debugging with Redux DevTools

• Redux can be used with
Answered by AI
Add your answer

Q1. How does Django apply migrations to the database?
Ans. 
Django applies migrations to the database using the 'manage.py migrate' command.
• Django tracks changes to models and generates migration files accordingly.

• The 'manage.py makemigrations' command creates migration files based on model changes.

• The 'manage.py migrate' command applies the generated migration files to the database.

• Migrations help keep the database schema in sync with the changes in Django models.
Answered by AI
Add your answer
Q2. What is hoisting in javascript?
Ans. 
Hoisting in JavaScript is the behavior where variable and function declarations are moved to the top of their containing scope during the compilation phase.
• Variable declarations are hoisted to the top of their scope, but not their assignments.

• Function declarations are fully hoisted, meaning they can be called before they are declared.

• Hoisting can lead to unexpected behavior if not understood properly.
Answered by AI
Add your answer

Create a full stack application in 3 days.

Q1. About Project and expertise
Add your answer
Q2. Why BCG?
Ans. 
BCG offers a challenging and innovative work environment with opportunities for growth and development.
• BCG is known for its cutting-edge technology and innovative projects

• Opportunities for professional growth and development

• Strong company culture focused on collaboration and teamwork
Answered by AI
Add your answer

Q1. Polymorphism, OS Deadlock
Add your answer

Q1. More about how to resolved code merge issue in Git
Add your answer

Q1. Asked about SAAS, JS questions
Add your answer

Given a case study need to solve in 2 days

Q1. Explain the case study. Palindrome function in any prog language
Ans. 
A palindrome function checks if a given string reads the same forwards and backwards.
• A palindrome function typically involves reversing the input string and comparing it to the original string.

• Examples: 'racecar' is a palindrome, 'hello' is not a palindrome.

• Common languages for implementing a palindrome function include Python, Java, and C++.
Answered by AI
Add your answer

Q1. General Guidelines
Add your answer

4 problems 2 easy 2 meds

Q1. Problem solving
Add your answer
Q2. Why you choose bcg
Add your answer
Q3. Case study what is it
Add your answer

This round includes an assignment which needs to be completed based on Java, Springboot, REST and any Frontend. They evaluated the case study based on how I write the APIs, how normalised my database is, and how user friendly the UI is.

Q1. How will you add pagination in Spring Boot JPA query?
Ans. 
Use Spring Data JPA's Pageable interface to add pagination in queries.
• Use Pageable interface in repository method signature

• Pass PageRequest object with page number, size, and sorting criteria

• Example: public List findAllUsers(Pageable pageable);
Answered by AI
Add your answer