Interview process was very lengthy, it was only after a call that comes after 15-20 days post interview, that you know that you cleared the round. In total there were 2 rounds only - Phone Screen (Technical) and MR (Managerial round). This was followed by HR discussion about compensation

Prepare for TCS interview with basic machine learning questions covering supervised learning, regression, classification, clustering, model evaluation, overfitting, and be ready to explain previous projects, datasets and outcomes clearly briefly