Intel Corporation interview questions

Just one on one tech round after resume screening. Asked me basic c questions and digital circuit design. And also about my projects, how to optimize secure abs debug it lasted for around 40 min interview

I had applied through a friend referral, I applied in multiple positions but as the profile did not match got rejection mails for almost all profiles but then I got a mail from HR after a month for a software service role and a technical interview was scheduled after 1 week of mail conversation at Singapore location.