ISCA is a subject where the examiners only compare language of answer you have written and the model answer so if no technical language dont expect to score.
It seems there are not many technically qualified people in this field so examiners are not interested in interpreting the answers of students and they are merely compared to the model answers word by word.
I am also agree with Teja view. This means more deep analysis of technical language will not be involved in this subject. Your answers need to match with the model answers only
This is another important and critical subject. Please take care and study well. Toughness or easyness of the question paper will not determine our success. This is a CA course and untill the result declares and cleared the tension and suspense will continue... Means the mystery will continue