Every viva examination is different, so it is not possible to know in advance exactly what the examiners will ask you. However, there are some common questions which you may like to practice as part of your own preparations.
Generally, the questions that are asked in viva examinations can be grouped under four basic headings:
Practicing how you would answer these four basic questions will take you a long way in your preparations.
Below are some more specific questions that follow on from these basic questions; these are arranged following the order of a typical thesis. Again, practice how you would answer them and think about any other questions that might come up in the context of your own research.