Brainlabs Interview Questions and Answers

Linear regression is a statistical method used to model the relationship between a dependent variable and one or more independent variables.

• Linear regression is used to predict the value of a dependent variable based on the value of one or more independent variables.

• It assumes a linear relationship between the independent and dependent variables.

• The goal of linear regression is to find the best-fitting line that repres...read more

R square measures the proportion of variance explained by the model, while adjusted R square penalizes for adding unnecessary variables.

• R square increases as more variables are added, even if they are not significant

• Adjusted R square penalizes for adding unnecessary variables by adjusting for the number of predictors

• Adjusted R square is always lower than R square

Developed a machine learning model to predict customer churn for a telecommunications company.

• Collected and cleaned customer data including demographics, usage patterns, and customer service interactions.

• Used classification algorithms such as logistic regression and random forest to build the predictive model.

• Evaluated model performance using metrics like accuracy, precision, recall, and ROC curve.

• Provided actionable i...read more

Incident tickets are for immediate issues, while problem tickets are for underlying causes of recurring incidents.

• Incident tickets are created for immediate issues that need to be resolved quickly.

• Problem tickets are created to address the underlying causes of recurring incidents.

• Incident tickets focus on restoring service as quickly as possible.

• Problem tickets focus on identifying and resolving the root cause to preve...read more

Active Directory is a directory service developed by Microsoft for Windows domain networks.

• Centralized database for managing network resources

• Stores information about users, computers, and other network objects

• Allows for authentication, authorization, and configuration management

• Supports group policies for controlling user access and settings