My exam is not correct

ho i recently(Today) gave my Advanced iot and ml exam in which i answered 21 answers right but the 1 question i did not got marks not only that in Question 16 i have answered right because there is no d1 in bolt nor we connect sensor to Tx or rx also question3 the information of how many devices can we connect is not given and question 12 we visualize data by coding it but there is no such option such that i selected none of above question was how to visualize data and not how to view data please read my queries and send me my certificate again please help