Oral Exams and Vivas: What to Expect and How ASEAN Students Can Prepare
By Muntasir • Published Sep 18, 2026 • Updated Sep 20, 2026 • Student Life
An oral exam, also called a viva voce, means answering questions about your work out loud in front of an examiner, and it rewards preparation and calm thinking more than memorized scripts.
🎓 Common for PhD and some Master's thesis defenses
Also used for language proficiency tests and some undergraduate modules
Examiners test understanding, not word-perfect recall
⏱️ Pausing to think before answering is normal and expected
Practice out loud with a mock panel before the real one
What an oral exam or viva involves
An oral exam, often called a viva voce (Latin for living voice), means you answer questions from an examiner or panel in person rather than in writing. The most common version is the PhD viva, where you defend your thesis in front of examiners who question you on your methods, findings and the gaps in your argument. Shorter oral exams also appear in language courses, some professional and medical programs, and occasionally in undergraduate modules that assess spoken competence directly.
The examiner already has your written work in front of them. Their questions check whether you understand what you wrote, can defend your choices, and can think through a problem in real time, not whether you can repeat your thesis word for word.
Why it can unsettle students with no experience of spoken assessment
Many school systems across ASEAN countries assess almost entirely through written exams. Facing a live panel who can interrupt, push back and ask follow up questions feels unfamiliar, and the added pressure of doing this in a second language raises the stress further. That discomfort is common and does not mean you are underprepared.
Silence during the exam feels worse than it is. Examiners expect a pause before a considered answer. A quick, shaky answer they can pick apart tells them less about your understanding than a short pause followed by a clear response.
Types of oral exams you might face
Thesis or dissertation viva, where a panel questions your research in depth, typically 60 to 180 minutes depending on the level and institution
Language proficiency orals, where you demonstrate speaking and listening skills in the target language
Presentation defenses, where you present findings then answer questions from the room
Clinical or practical orals in fields like medicine and nursing, where you talk through a case or procedure
How to prepare
Know your own written work in detail: the choices you made, the weaknesses you are aware of, and why you made each decision.
List the questions you expect and write short answers to each, then practice saying them out loud rather than only reading them.
Book a mock viva or practice session with your supervisor, academic skills centre, or classmates, and ask for direct feedback on both content and delivery.
Prepare a two minute summary of your work you can give if asked to open the session, since many examiners start with a general question.
Record yourself answering practice questions and listen back for pacing, filler words and clarity.
During the exam
Pause before answering a hard question rather than filling the silence with words. Ask the examiner to repeat or rephrase a question you did not follow instead of guessing at what they meant. If you do not know something, say so directly and explain how you would find out, rather than inventing an answer.
Bring a printed copy of your own work with key pages marked, if the format allows it, so you can point to specific data or arguments instead of trying to recall page numbers from memory.
After the oral exam
Most vivas end with the panel asking you to step outside while they decide the outcome, then calling you back in to explain the result and any required corrections. Ask your supervisor beforehand what the possible outcomes are at your specific institution, since terms like minor corrections or referral carry different meanings depending on the university.