Cisco Sr. Software Engineer interview questions

I see the position on the Cisco career website. Submitted my resume and fill out the forms. Got a phone interview a couple weeks later and then schedule a on-site next week. It is a technical interview and I did a lot of white-board coding. The questions are not difficult (like reverse a link list). But the manager pays a lot attention to the details. For example, how you optimize a couple statement and what variable naming scheme you use. Overall it is not a tough interview. I think I am qualified for the position but I am not the type of developer the manager is looking for.