Most recent e-learning platforms include testing modules and Computer Based Assessment (CBA) is currently one of the most pressing issues in Learning Management Systems (LMS). Traditional testing techniques aren't fully adequate to examination administration in higher education contexts, as they generally require choosing the answer just in a narrow set of options. Adaptive testing permits an evaluation more suitable for the examinee but it is affected by limits related to the uniformity of the exams, to the range/width of the subjects and to the large amount of items to be inserted in the question databases. e-Xamina is a prototype of assessment platform aimed at combining the features of these two main kinds of CBA. e-Xamina model suggests a new performance based exam pattern and a score criterion based on standard examination practice. Finally, e-Xamina multi-user feature allows the teachers to cooperate in managing course database, with many different levels of competence and rights.