Often considered the "CEO" of their product area, product managers oversee the strategy, production, and implementation of a particular product. Because product management teams include members from different backgrounds such as engineering, design, and data design, product managers must have strong communication skills and excel in cross-functional work environments. Expect to answer questions about your management abilities, prioritization skills, and experience working in product. Though not required, technical backgrounds are advantageous particularly when applying for roles at tech companies.
One thing about technical recruiting is that they want to ensure you actually know what you say you know. Many questions may be technically inclined to gauge your knowledge base and ability to work in a dynamic, cross-functional team environment.
It's best to answer truthfully and be clear on anything you may not know, but can learn. They will find out soon enough, so you should be honest and upfront to avoid any misconceptions.