How does the proctored examination work, and do they need to visit the university for an examination?

When an individual is enrolled in an online university, from classes to exams, everything is conducted in completely online mode. Coming to the point, when it comes to the examination, proctored software is incorporated into the examination, so that any malpractice by students is avoided. 

To understand proctored software, in simple words, it's the kind of software that tracks the overall time and movement of the computer system, and it also tracks the learner and the environment, so that any complications do not happen. 

Secondly, as I mentioned above, one does not need to visit the university to appear for the exams. So, I hope that your query got cleared, and if you have any other questions, you can surely ask me here :)

A proctored examination is supervised to ensure exam integrity, either online with a remote proctor or in-person at the university. Whether you need to visit depends on the exam format set by the university. If it's an online mode of education, then it's completely online.