Perguntas de entrevista de vagas de Embedded Software Engineer da empresa IAST Software Solutions

The interview process is simple, there will be a technical interview and the I really don't understand how they decide on selecting/rejecting a candidate. Because I was able to answer all the questions put up to me and Interviewer also commented I performed very well when I asked. But later after I enquired only then that I got to know that they had rejected me.