Hey!

See, it depends on the mode of examination, if it's online then obviously you do not need to write the exam. It will be totally Computer Based Test (CBT). However, you might nedd to use paper pen to do the rough work or to solve the problems. But if the exam is in offline mode then definitely you need to write the exam, it will be paper-pen based. There is no other way.

Hope it helps to clear your dilemma, thankyou!