Not necessarily, if you already have solid knowledge of PrestaShop, back-end development (PHP, Symony), experience of module creation, and you have studied the PrestaShop devdoc. However, we advise you to follow this training to ensure you have the necessary knowledge.
No, it is recommended to have a solid foundation in terms of PHP development and a good knowledge of Symfony. But for this level 1 certification, you don't need to be an expert.
It's unlikely, the majority of questions are PrestaShop oriented, there are very few generic questions about back-end development.
This certification covers both the legacy part and the Symfony part of PrestaShop, so we recommend that you take the back-end training, open a recent PrestaShop project and study the devdoc.
No, back-end does not mean back-office. This certification is intended for developers wishing to recognize their skills in application development, logic within the framework of a PrestaShop project.