You are likely to experience two main types of assessment, formative and summative. Formative assessment is concerned with on-going monitoring of your performance in order to provide feedback that will help you improve. Summative assessment will contribute marks towards your final grade. Both types of assessment are equally important to you, and in fact some would say formative assessment is more important for learning.
You should receive appropriate feedback from formative and summative assessment. This will help to inform your future practice.