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Can you provide some insights on the effectiveness of Rectified Linear Unit as an activation function?

Can you discuss the challenges associated with deep models that have numerous layers?

What steps would you follow to estimate Pi using the Monte Carlo Algorithm?

What would you say is the primary function of CNN, and where is it most relevant?

Design a system for managing a distributed data replication system.

What are the key considerations when designing a highly available and consistent feature toggle service?

Can you name some time series analysis models that serve as alternatives to ARIMA?

How do you calculate confidence intervals for a mean in Python?

Elaborate on the differences between the tabular and multidimensional model, highlighting the one that Azure analysis services endorse?

For a dataset with 4 behavioral variables and 20 contextual attributes that needs normalization, what would be your approach for building an unsupervised learning model that can detect outliers? Also, which evaluation metrics and visualizations would you prefer to measure the model's performance?