The last F5 computer base exam was a diseaster! The keyboards provided were pure plastic and the constant noice from all of them made the sensation like hearing a digger outside the window. Absolutely not possible to concentrate, necessary of reading the question few times made rather additional frustration on the top of the exam stress. It was kind of traumatic experience! My advice – take paper base F5! Especially if not very very fast in typing and sensitive to very noisy atmosphere.