Since digital marketing is a continuously expanding field, there are seven types of SEO. However, if you are looking for an intermediate marketing role, you should, at least, be aware of:
On-Page SEO
Off-Site/Off-Page SEO
Technical SEO
It would be ideal to elaborate on these three to show that you are not simply naming them.
You could say, on-page SEO involves keyword research and optimization along with high-quality content creation. Together they correspond to how a company’s website ranks on search engines.
On the other hand, off-site SEO can help with building a brand’s online reputation outside its website through high-quality backlinks and so on.
Having knowledge of technical SEO will also help your future employer gauge your professional understanding of terms such as indexing, crawling, etc.
Such common marketing interview questions are often asked by the interviewers. You can also check out a few SEO certifications.