These back exams from the University of Toronto’s Centre for Medieval Studies make for ideal translation practice either to prepare for the Centre’s exams, which may be taken by external as well as internal candidates, or to learn medieval Latin generally. The Level One Latin exam is known informally as the MA Latin exam; Level Two is synonymous with PhD Latin. Good luck!
Incidentally, if you are taking the Centre’s other language exams, you may be interested in these German back exams.