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Yes, you can be given partial marks.
Marks are allocated based on the completeness (and accuracy, of course) of the answers given. Remember that it’s all about answering the question, so if they ask you for 1 example of something that there are 3 or 4 answers to, providing any one of these possible solutions should get you full marks (subject to accuracy/completeness).
That’s my understanding of it anyway. Further discussion of the processes employed by the CFAI can be found on their website and in their white papers.
Personally I think there is probably more chance of getting full marks for unambiguous questions, such as those requiring a specific calculation or asking for something to be “identified”. Looking over past years’ exams, some of the other types of questions seem to have a level of ambiguity that can be challenging…. Good luck