You will take the test on a computer at the test centre your registered at. You will probably not take your test alone as test centres will have more than one computer set up to run the test.
Talking is not permitted during the test. You will also not be able to use your phone or any other device during the test and will not be allowed anything - including any study notes - on the desk.
Whilst you will not be taking the test alone, however, as the questions are drawn randomly you will not take the same test as anyone else in the room - this minimises the risk of cheating as you will not be able to copy anyone's answers.