Using of modern concepts based on information and communication technologies is still growing and also educational organizations must react on this situation. It requires effective approach in control, teaching and testing process. Classification usually follow-up to testing process is very sensitive phase of the learning process and it is necessary to ensure the greatest possible fairness and objectivity. Assessment of programming knowledge and skills is especially challenging task. To ensure the objectivity of the assessment, it was necessary to proceed to develop a unified system, at least in the case of testing knowledge of the theoretical part. The paper presents the model of computer-aided knowledge testing with regard to the content of programming subjects. We developed and implemented model using the standard quizzes in electronic environment Moodle. It is considered such as the most accessible environment alternative for educational organizations. The research outcomes show that the elaboration of the content into the thematic areas of the model, and specification of their objectives are reasonable. Positive perception of electronic testing is clear, but contrary the students prefer combine form of testing, where teacher still plays the essential role.