Mu Sigma Decision Scientist Interview Questions, Process, and Tips

Q1. What's the CI/CD workflow that's followed in your team?
Ans. 
Our team follows a CI/CD workflow that includes automated testing, code reviews, and continuous integration.
• Automated testing is run on every code change to catch bugs early.

• Code reviews are conducted before merging changes to ensure code quality.

• Continuous integration is used to automatically build and test code changes in a shared repository.

• Deployment pipelines are set up to automate the release process.

• Version cont...read more
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Q2. Has there been any security incident and how have you handled those ?
Ans. 
Yes, there have been security incidents and I have handled them effectively.
• Implemented security protocols to prevent future incidents

• Conducted thorough investigation to identify the root cause

• Collaborated with IT team to strengthen security measures

• Communicated with stakeholders to ensure transparency and trust

• Provided training to employees on cybersecurity best practices
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Q3. Difference between authorization and authentication ?
Ans. 
Authentication verifies the identity of a user, while authorization determines what actions a user is allowed to perform.
• Authentication confirms the identity of a user through credentials like passwords or biometrics.

• Authorization determines the level of access or permissions a user has once their identity is confirmed.

• Authentication is the process of logging in, while authorization is the process of granting or denyin...read more
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Q4. LLD for an authentication and authorization system
Ans. 
LLD for an authentication and authorization system
• Separate modules for authentication and authorization

• Use of secure hashing algorithms for storing passwords

• Role-based access control implementation

• Audit logging for tracking user actions

• Integration with external identity providers
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Q1. Design a document managed storage like google drive as an E2E solution.
Ans. 
Design a document managed storage like Google Drive as an E2E solution.
• Implement user authentication and authorization for secure access.

• Create a user-friendly interface for uploading, organizing, and sharing documents.

• Include features like version control, file syncing, and search functionality.

• Utilize cloud storage for scalability and accessibility.

• Implement encryption for data security.

• Integrate with third-party app
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There was aptitude qusns and video synthesis qusn

Q1. They showed a video and asked to write about my understanding
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Q2. Case study related qusns
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Q3. She asked me about javascript
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Q4. Verified my speaking capabilities
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Q5. Firstly asked about my intro
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Q1. Case Study - How can you increase the growth of a leading mobile manufacturer
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Q2. How does internet work
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SQL questions on sub-queries

Online aptitude was fine

Q1. What problem does ML solve
Ans. 
ML solves complex problems by analyzing data and making predictions or decisions based on patterns and trends.
• ML can solve problems related to prediction, classification, clustering, anomaly detection, and recommendation.

• Examples include predicting customer churn, classifying spam emails, clustering similar customer segments, detecting fraudulent transactions, and recommending products based on user behavior.

• ML can aut...read more
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Q2. Explain what i did in house price model
Ans. 
I developed a predictive model to estimate house prices based on various factors.
• Collected and cleaned data on house features, location, and sale prices

• Performed exploratory data analysis to identify key variables impacting house prices

• Built and trained machine learning models such as linear regression or random forest

• Evaluated model performance using metrics like RMSE or R-squared

• Used the model to make predictions on
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Easy logical and technical questions

Q1. Dsa was asked and why do you think you are a good choice for the company
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