Always do your due diligence beforehand by reviewing the job posting, company website and social media pages to familiarize yourself with the work involved. If technical skills are a requirements, including proficiency in specific programs and/or systems, they are likely to already be outlined on the job posting.
If you applied for this role, the interviewer assumes you already know about these requirements, that you are already proficient and/or that you are currently studying for these programs and/or (i.e., studies in progress).