Huawei Technologies Technical Support Engineer interview questions

Applied via online website, they called to set up for the interview date. There were 3 stages of interviews, starting with technical knowledge and question, the panel gave me a piece of A4 paper and a pencil and asked to sketch a network architecture. And followed by HR interview, all questions were getting to know you and your personalities. And the final stage is the Head of Department, once again he basically asked to do a short presentation on a whiteboard using marker and briefed him what I have learned from my previous job.