IMHO marketers have a lot going for them when they choose to transition into a product management role. There are certain commonalities that they can leverage.
1. Require a lot of internal and external communication (both verbal and written).
2. Mandate an understanding of the audience (personas - segmentation) and crafting experiences that they'll resonate well with.
3. Demand cross-functional coordination i.e. you have to collaborate with a number of parties to execute properly.
Here are some handy resources compiled by Rachel Dixon on the topic.
As a Product Manager, you might be asked a lot of questions during an interview. One of them includes technical questions. Here are 4 types of technical questions that you might come across.