NBE has not released the mock test yet for NEET MDS. When it is released on their official website, you can practise the test without logging. The screen will give you directions to take the mock test. Once you click on "I understand" button, it will take you to the mock test. The question paper palette will have a display on the right hand side of the screen to show the no.of questions answered and time left. To answer any question, you have to select an option and click on the circle. You have to click on "Save and Next" to move to the next question. You can check complete details on: https://medicine.careers360.com/articles/neet-mds-mock-test