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Updated 17 Mar 2025

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Consultant Interview Questions & Answers

user image Anonymous

posted on 5 Mar 2023

I applied via Campus Placement

Round 1 - HR 

(3 Questions)

  • Q1. Tell me something about yourself.
  • Q2. (Among other points, mentioned travelling as a hobby) Any particular place/incident that is your favorite?
  • Q3. (Mentioned Sweden) Do you know how Sweden has handled the pandemic situation?
Round 2 - Case Study 

Client is an IT major in India. They are doing well but have sub optimal top line growth compared to their peers. The sales force productivity is declining. Help them increase the same.
[Please note that I stands for Interviewer and C stands for Candidate]

C: I wanted to ask some questions to get a better understanding. When you mention IT major, can I assume a company like TCS? What exactly do you mean by top line growth?

I: Yes, assume a company like TCS or Infosys. Top line is revenue growth.

C: What are the revenue streams for the company? What is the role of the sales force?

I: The company provides IT services to other firms (B2B). The salespeople are linked to accounts verticals. For large accounts, there is one person who acts as the single point of contact. The more junior salespeople are mapped to verticals like banking etc. The sales force is divided into hunters and farmers. Hunters are responsible for bringing in new clients while farmers are responsible for handling existing clients. They manage to bring in a revenue of 8-10 million a year. Productivity is measured as the amount of revenue per salesperson.

C: Thank you. Now that I have a fair understanding of the situation I would like to jump into the case. Since the revenue per salesperson is decreasing, this could be due to 2 reasons: we are not getting new clients (hunters), or we are not engaging well with or enough with our existing clients due to which they are leaving us.

I: The hunters are producing okay but there are too many hunters which is leading to lesser revenue per person (1-2 million per year). Farmers have low productivity.

C: If we were to focus on farmers, there could be two reasons why their productivity is low. Either the existing clients are leaving us (account churn rate is high) or they are unable to expand the existing accounts.

I: Right, they are unable to expand existing accounts. Why do you think this is happening and what can be done?

C: They can keep track of any new opportunities within their existing clients, expanding into other areas not already covered by the firm. The SPOC must keep track of any such opportunities that might come up.

I: Anything else?

C: The salespeople must pitch the value proposition of the firm and their USP in order to encourage the clients to give more business to the firm. They can give incentives to the clients in terms of monetary or other means as well. They should reach out to the right people within their client firms in order to land the message well.

Round 3 - Case Study 

The client is a petrochemicals company. The promoter is involved in the exploration and production of oil and produces around 200,000 barrels of oil a day (a sizeable amount - about 25% of India's production). The oil he produces is significantly discounted. Help him add value to his oil.
[Please note that I stands for Interviewer and C stands for Candidate]

I: Let us do a case. The client is a petrochemicals company. The promoter is involved in the exploration and production of oil and produces around 200,000 barrels of oil a day (a sizeable amount - about 25% of India's production). The oil he produces is significantly discounted. Help him add value to his oil.

C: Sure. I wanted to ask a few questions to understand this better. Where is our client based out of? What does the value chain of his business look like?

I: The client is India based. He is involved in the production of crude oil in India and transferring it to 4-5 refineries. His production facility is present in Rajasthan and he delivers oil to one refinery in Mathura, two in Gujarat, and one in the coastal area in Mumbai.

C: In this case, is there a way to set up a production facility closer to these refineries?

I: This process has a long lifecycle wherein it takes 3-4 years to find the oil and then a few more years to start the drilling process. Hence, this is a process of 3-7 years and not very feasible.

C: Alright understood. Next, I want to understand, when you mentioned that the is oil is discounted, how much is it discounted?

I: The known price of Brent crude is $55 per barrel and producers can sell their oil at either a premium or discount to Brent. Our client sells at a discount of $10 a barrel. This is not acceptable to him and he wants to know how to monetize his oil better.

C: Is there a particular reason for why his oil is being discounted?

I: The oil that our client transports are heavy or medium oil. It is a waxy oil which makes the transportation and receiving process cumbersome. There is also a high presence of Sulphur content.

C: Thank you. I think I have a broad understanding now and would like to dive into the case. In this situation, I think there are two areas we can broadly focus on: looking at the current refineries that the client is delivering to and how the transportation process can be improved or looking at identifying and delivering to newer refineries.

I: Identifying new refineries will be tough to make practical. Is there anything else he can focus on?

C: He can expand his business into setting up his own refinery.

I: Yes, that is an option he can explore. In terms of the yield of the crude slate, 45% is petrol and 20% is diesel. There is an additional realization of $20 for petrol and $30 for diesel. For example, for a crack of $20 he will realize $75. What is the return per year the client can hope to get? Assume the plant is closed for 15 days a year.

C: Performed calculations. Total amount = $1.05 billion/year.

I: Great. What are some other options the client can explore in his existing setup?

C: There are two issues with the transportation as you mentioned. The first one was excess wax. Can we somehow modify the way we transport the oil to fix this?

I: We deliver the oil through pipelines. What can we do to reduce the wax?

C: We can maintain the oil at a certain temperature so as to prevent wax from forming.

I: Right, so we can have heated or insulated pipes. What else?

C: Can we use the sulfur content in the oil?

I: We can also create naphtha from the crude. We will get 10% yield regularly. This can increase to 20% but will reduce the yield of petrol and diesel by 5%. Each ton would cost $145. Would this be a feasible option? I started calculating but the interviewer stopped me in between.

Interview Preparation Tips

Interview preparation tips for other job seekers - Understand the company's values, culture, and mission, and be prepared to demonstrate how your skills and experience align with the job requirements.

Top BCG Consultant Interview Questions and Answers

Q1. “there is a company in the telecom sector and has a product “X” – this X is a necessity in telecom and the company has been making good profits for the last 4 years – like 40% gross margin.. and now suddenly the revenue and profits are stag... read more
View answer (3)

Consultant Interview Questions asked at other Companies

Q1. How would you pass an entry for travel expenses incurred and paid by employee and was reimbursed? How would the end to end flow happens
View answer (8)
Interview experience
3
Average
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
No response

I appeared for an interview in Jan 2025.

Round 1 - One-on-one 

(5 Questions)

  • Q1. Basics of Python, Flask, ReactJs, RestApi Development
  • Q2. Python - Difference between is and ==
  • Ans. 

    The 'is' operator checks if two variables point to the same object in memory, while '==' checks if the values of the two variables are equal.

    • Use 'is' to check if two variables reference the same object in memory

    • Use '==' to check if the values of two variables are equal

    • Example: a = [1, 2, 3]; b = a; a is b will return True, a == b will also return True

  • Answered by AI
  • Q3. React - useEffect vs useState
  • Ans. 

    useEffect is used for side effects in functional components, while useState is used for managing state.

    • useEffect is used to perform side effects in functional components, like data fetching, subscriptions, or manually changing the DOM

    • useState is used to manage state in functional components, allowing the component to re-render when the state changes

    • Example: useEffect can be used to fetch data from an API when the compo...

  • Answered by AI
  • Q4. Authentication in RestApi
  • Ans. 

    Authentication in RestApi involves verifying the identity of users before granting access to resources.

    • Use tokens (JWT) for authentication

    • Implement OAuth for secure authentication

    • Utilize session management for user authentication

    • Implement two-factor authentication for added security

  • Answered by AI
  • Q5. React - Pure Component and Higher order components

Python Fullstack Developer Interview Questions asked at other Companies

Q1. what are the key differences between ArrayList and LinkdList in python?
View answer (1)

Interview Questions & Answers

user image Anonymous

posted on 13 Jan 2025

Interview experience
3
Average
Difficulty level
Moderate
Process Duration
4-6 weeks
Result
Not Selected

I applied via Approached by Company and was interviewed in Dec 2024. There were 3 interview rounds.

Round 1 - Coding Test 

Asked coding questions on Python and SQL
Python - find longest non repeating substring
SQL - join and window function

Round 2 - Assignment 

Develop a production-grade application in Python that analyzes data and provides answers to questions based on the dataset.

Round 3 - Technical 

(2 Questions)

  • Q1. System design and project based questions
  • Q2. Scenario-based questions that can help assess how you handle various situations

Interview Preparation Tips

Topics to prepare for BCG interview:
  • Coding
  • System Design
  • Managerial
Interview preparation tips for other job seekers - You need to be thorough with coding, technical depth in projects and scenario based solutions for various difficult situations that one might have to face a a lead
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
4-6 weeks
Result
Not Selected

I applied via Naukri.com and was interviewed in Dec 2024. There were 2 interview rounds.

Round 1 - One-on-one 

(2 Questions)

  • 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
  • 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
Round 2 - Assignment 

Create a full stack application in 3 days.

Skills evaluated in this interview

Top BCG Software Engineer Interview Questions and Answers

Q1. why redux is used and advantages?
View answer (1)

Software Engineer Interview Questions asked at other Companies

Q1. Bridge and torch problem : Four people come to a river in the night. There is a narrow bridge, but it can only hold two people at a time. They have one torch and, because it's night, the torch has to be used when crossing the bridge. Person... read more
View answer (220)

BCG interview questions for popular designations

 Consultant

 (69)

 Associate

 (21)

 Associate Consultant

 (15)

 Summer Intern

 (12)

 Software Engineer

 (9)

 Intern

 (7)

 Data Engineer

 (7)

 Data Analyst

 (5)

Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
No response

I applied via Walk-in and was interviewed in Dec 2024. There were 3 interview rounds.

Round 1 - SCREENING 

(2 Questions)

  • Q1. About Project and expertise
  • 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
Round 2 - Technical 

(1 Question)

  • Q1. Polymorphism, OS Deadlock
Round 3 - Technical 

(1 Question)

  • Q1. More about how to resolved code merge issue in Git

Top BCG Software Engineer Interview Questions and Answers

Q1. why redux is used and advantages?
View answer (1)

Software Engineer Interview Questions asked at other Companies

Q1. Bridge and torch problem : Four people come to a river in the night. There is a narrow bridge, but it can only hold two people at a time. They have one torch and, because it's night, the torch has to be used when crossing the bridge. Person... read more
View answer (220)

Get interview-ready with Top BCG Interview Questions

Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - HR 

(2 Questions)

  • Q1. Why are you looking for a change?
  • Q2. Salary expectations.
Round 2 - Technical 

(2 Questions)

  • Q1. Basics of Python, Selenium, HTML/CSS, Locators, Testing Concepts
  • Q2. Solve a case study, based on a real-world problem
Round 3 - Technical 

(2 Questions)

  • Q1. Same as previous.
  • Q2. More difficult case study, managerial questions.
Round 4 - Behavioral 

(2 Questions)

  • Q1. Previous experience, explain the current working method, and how you can improve.
  • Q2. My expectations from the company

Interview Preparation Tips

Interview preparation tips for other job seekers - Be clear with the programming basics like file handling, oops, functions, overloading, overriding, testing methodologies, HTML, CSS, APIs, Postman, etc.

Software QA Engineer Interview Questions asked at other Companies

Q1. What exceptions have u faced while creating framework?
View answer (1)
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
No response

I applied via Approached by Company and was interviewed in Apr 2024. There were 4 interview rounds.

Round 1 - Aptitude Test 

Contained only mcq questions related to maths and reasoning

Round 2 - Technical 

(2 Questions)

  • Q1. How to detect two loops in a linkedlist
  • Ans. 

    Use Floyd's Cycle Detection Algorithm to detect two loops in a linked list.

    • Initialize two pointers, slow and fast, both starting at the head of the linked list.

    • Move slow pointer by one step and fast pointer by two steps in each iteration.

    • If they meet at some point, there is a loop. Reset one pointer to head and move both by one step until they meet again to find the start of the loop.

  • Answered by AI
  • Q2. Mainly all the basics questions on DSA and C++ Language and all the ds like stacks, linkedlist, tree, array, queue,map difference between queue and stack
Round 3 - Technical 

(3 Questions)

  • Q1. Questions on project
  • Q2. Code simple que like reverse the string in every possible language that is mentioned on yor resume ,like node js react or python and even c language
  • Q3. Basics questions of os like deadlocks
Round 4 - HR 

(1 Question)

  • Q1. I was note selected for this round

Interview Preparation Tips

Topics to prepare for BCG Junior Software Engineer interview:
  • DSA
  • React
  • SQL
  • Linkedlist
  • array

Skills evaluated in this interview

Junior Software Engineer Interview Questions asked at other Companies

Q1. If there are 10 ball 2 red, 5 blue ,3 orange and one ball is picked randomly what is probability that the ball picked is red?
View answer (2)

Data Analyst Interview Questions & Answers

user image Anonymous

posted on 25 Jul 2024

Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. Power BI Difference between ALL() and ALLSELECTED()
  • Ans. 

    ALL() ignores all filters in the query context, while ALLSELECTED() ignores only filters on columns in the visual.

    • ALL() removes all filters from the specified column or table.

    • ALLSELECTED() removes filters from the specified column or table, but keeps filters on other columns in the visual.

    • Example: ALL('Table') would remove all filters on the 'Table' in the query context.

    • Example: ALLSELECTED('Column') would remove filte...

  • Answered by AI
  • Q2. Excel Difference between COUNT() and COUNTA()
  • Ans. 

    COUNT() counts only numeric values, while COUNTA() counts all non-empty cells.

    • COUNT() counts only cells with numerical values.

    • COUNTA() counts all non-empty cells, including text and errors.

    • Example: COUNT(A1:A5) will count only cells with numbers, while COUNTA(A1:A5) will count all non-empty cells.

  • Answered by AI
Round 2 - Technical 

(2 Questions)

  • Q1. Resume based questions like explain the projects that you have done.
  • Q2. Sample dataset questions

Skills evaluated in this interview

Data Analyst Interview Questions asked at other Companies

Q1. Suppose there is a room in the office and X people enter room throughout the day, Y people leave throughout the day [continuously people are entering the room, some are staying there, and rest are going out] .. so tell me the code to calcul... read more
View answer (11)
Interview experience
3
Average
Difficulty level
Hard
Process Duration
More than 8 weeks
Result
Not Selected

I applied via Naukri.com and was interviewed in Jun 2024. There were 3 interview rounds.

Round 1 - Technical 

(1 Question)

  • Q1. Technical questions on GenAI
Round 2 - Technical 

(1 Question)

  • Q1. Technical high level questions on Previous projects
Round 3 - Behavioral 

(1 Question)

  • Q1. Team handling and other case based scenario questions

Software Engineering Specialist Interview Questions asked at other Companies

Q1. Explain Python Data Structures and advantages and some differences in each
View answer (2)
Interview experience
3
Average
Difficulty level
Hard
Process Duration
Less than 2 weeks
Result
-

I applied via Naukri.com and was interviewed in Aug 2024. There was 1 interview round.

Round 1 - Technical 

(2 Questions)

  • Q1. How to write custom django admin commands
  • Ans. 

    Custom Django admin commands can be written to perform specific tasks in the Django admin interface.

    • Create a management/commands directory inside your Django app directory

    • Create a Python file for your custom command inside the management/commands directory

    • Define a class that extends BaseCommand and implement the handle method to execute the command logic

    • Register the custom command in the Django admin interface by addin

  • Answered by AI
  • Q2. Python decorator

Skills evaluated in this interview

Top BCG Software Engineer Interview Questions and Answers

Q1. why redux is used and advantages?
View answer (1)

Software Engineer Interview Questions asked at other Companies

Q1. Bridge and torch problem : Four people come to a river in the night. There is a narrow bridge, but it can only hold two people at a time. They have one torch and, because it's night, the torch has to be used when crossing the bridge. Person... read more
View answer (220)
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
No response

I applied via Referral and was interviewed in Jul 2024. There were 3 interview rounds.

Round 1 - Assignment 

An assignment based on the given scenario.

Round 2 - HR 

(1 Question)

  • Q1. Personal details and reason for change in job
Round 3 - One-on-one 

(1 Question)

  • Q1. Scenario based questions, aptitude and attitude , connecting new person or a popular personality

Executive Assistant Administrator Interview Questions asked at other Companies

Q1. How can you add value
View answer (1)

BCG Interview FAQs

How many rounds are there in BCG interview?
BCG interview process usually has 2-3 rounds. The most common rounds in the BCG interview process are Case Study, HR and Technical.
How to prepare for BCG interview?
Go through your CV in detail and study all the technologies mentioned in your CV. Prepare at least two technologies or languages in depth if you are appearing for a technical interview at BCG. The most common topics and skills that interviewers at BCG expect are Consulting, Python, SQL, Analytical and Agile.
What are the top questions asked in BCG interview?

Some of the top questions asked at the BCG interview -

  1. “there is a company in the telecom sector and has a product “X” – this ...read more
  2. Your client is Tata Sons and their hierarchy is such that all their other busin...read more
  3. Case: Our client is a leading cement manufacturing firm in India looking to ent...read more
How long is the BCG interview process?

The duration of BCG interview process can vary, but typically it takes about less than 2 weeks to complete.

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BCG Interview Process

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