Infosys interview questions

Very easy interview. I was asked to introduce myself. Then he asked what is sdlc and difference between sdlc and stlc. Some basic os question were asked. Finally he saw my resume and appreciated it because of my grades in 10th,+2 and clg

I had a 3 round interview (Tech, Tech+Behaviour and Behaviour), after clearing these 3 I received a CTC which I accepted and initiated document review. The day I was supposed to receive offer letter HR asked me to give another interview without any clarification on why an extra round is being held. For this particular interview there panel was lacking basic knowledge, showcasing ISO 27001:2013 question when a latest 2022 version is available and constantly insisting that an ISO certification is compulsory for ISMS, no where it is mentioned that for ISMS you must have a ISO 27001 certification. Sone other display by him was stating RBI guidelines for a Canadian bank, incorrectly highlighting the number of domains and making the candidate really uncomfortable. Before appearing for an interview here be very clear that even clearing HR round doesn't guarantee and offer letter. Overall very unprofessional and unethical Talent Aquisition process.