Once information technology has been accepted in education, teachers and students have equal rights in the ability to exploit the data sources of digital technologies. Exploiting multimedia and AI, digital data sources represents both an opportunity and a challenge for teaching and learning, particularly for testing and evaluating. The article presents forms of exploitation of data sources of digital technologies and draws on the concept of knowledge-skills to propose some solutions in the learning of foreign languages.Once information technology has been accepted in education, teachers and students have equal rights in the ability to exploit the data sources of digital technologies. Exploiting multimedia and AI, digital data sources represents both an opportunity and a challenge for teaching and learning, particularly for testing and evaluating. The article presents forms of exploitation of data sources of digital technologies and draws on the concept of knowledge-skills to propose some solutions in the learning of foreign languages.