Dell Technologies Software Engineer-1 interview questions

Round 1 (Online Test): -consisted of MCQ based questions -focused on data structures, operating systems, networking and basic aptitude and reasoning. Round 2 (Technical Interview): -detailed run-through of my resume -how does cloud technology work according to you - does it require any physical server? -algorithm for reading a document and writing those words into a file that appear at least 'k' times - optimize it if possible -ML pipeline for classifying users based on either single tab or multi tab usage of google chrome - what data will you collect (only because my major is AI ML) Round 3 (Managerial): -why Dell -career objective Round 4 (HR): -strengths -willing to relocate -ability to work in a group -social life and friends