BCG Interview Questions, Process, and Tips

Q1. Why are you looking for a change?
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Q2. Salary expectations.
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Q1. Basics of Python, Selenium, HTML/CSS, Locators, Testing Concepts
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Q2. Solve a case study, based on a real-world problem
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Q1. Same as previous.
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Q2. More difficult case study, managerial questions.
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Q1. Previous experience, explain the current working method, and how you can improve.
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Q2. My expectations from the company
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Contained only mcq questions related to maths and reasoning

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.
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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
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Q1. Questions on project
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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
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Q3. Basics questions of os like deadlocks
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Q1. I was note selected for this round
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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...read more
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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.
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Q1. Resume based questions like explain the projects that you have done.
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Q2. Sample dataset questions
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Q1. Technical questions on GenAI
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Q1. Technical high level questions on Previous projects
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Q1. Team handling and other case based scenario questions
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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
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Q2. Python decorator
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