@aashish77
Thank you for reaching out via the ISC2 Community Board.
I understand you are eager to sit for the CC exam.
All ISC2 exams are administred in ISC2-approved Pearson VUE testing centers. Unfortunately, there are no ISC2-approved testing cneters in Kolkata, India.
It is unfortunate, but you will need to travel to take your exam. The nearest testing center to your laction is, unfortunately, in another country; Dhaka, Bangladesh. The nearest testing center to your location in India is in Hyderabad.