Zentron Labs interview questions

1)Aptitude + Python code 2) Technical Interview (online) -In this they have asked me about Machine Learning(Linear regression,multiclass,R2 score ,PCA,Kmeans clustering,logistic regression,svm,ensemble techniques,random forest) ,Deep leaning(Backpropogation concept),Computer Visison, 3) Live Coding

They were conducted totally four rounds. Two technical round via zoom link and one technical round is their place and one HR round. All technical round I was selected and HR round I was rejected.