How to Practise for Computer-Based Exams

The short answer: practise on the interface you will face, build habits for navigating and marking questions, organise rough work on paper, and train your eyes and attention for long screen sessions. Interface comfort removes a source of avoidable errors.

What changes on a computer

On paper you see the whole question paper and can jump to any question with your finger. On a screen you see one question at a time, with a palette showing question status. You cannot underline on the question, rough work goes on separate sheets and the timer is always in view. These differences are small individually, but together they change how you read, plan and recover from a bad question. Candidates who have only practised on paper often lose minutes to navigation and make errors copying figures to rough sheets.

Step 1: Learn the interface

Before the exam, find out how your exam's interface works from the official mock or demo provided by the conducting body, and from the instructions in the notification. Practise these actions until they are automatic:

• moving to the next and previous question;
• jumping through the question palette;
• saving an answer, clearing a response and changing an answer;
• marking a question for review, and understanding what review status means for evaluation;
• switching sections, if the exam allows it;
• reading the timer and any warning;
• using any on-screen calculator, if one is provided.

Check the instructions carefully for rules that differ between exams. For example, some exams lock you into a section once you move on; some allow free movement; some show a section-wise timer. Never assume.

Step 2: Build a rough-work system

Most computer-based exams give you rough sheets, not scratch space on screen. A simple system helps:

1. Write the question number at the top of each piece of rough work.
2. Use one column per question in a section so that you can return to a question and find your work.
3. Copy figures carefully: a transposed digit is a common error when copying from screen to paper.
4. For reasoning sets, draw your table or diagram on one page so you can reuse it across the set's questions.

Step 3: Use mark-for-review deliberately

Marking a question for review is a way to leave and return, not a way to avoid decisions. A workable policy: mark a question when you have a plausible answer but want to check, or when it exceeds your time ceiling and you can see a route you could try later. Do not mark questions you have no idea about; leave them unanswered or guess by your policy. At the end, return to marked questions in order of how quickly they can be resolved. Check, too, whether marked-for-review answers count in evaluation in your exam, as practices differ.

Step 4: Train screen stamina

Reading for two or three hours on a screen is tiring. Practise it:

• Take full-length mocks on a screen of the same kind (laptop or desktop) you will use.
• Look away for a few seconds every 20 minutes or so, if the exam lets you; practise brief breaks that do not cost marks.
• Sit at a table with a proper chair, as the exam centre will be.
• Keep screen brightness comfortable and clean your screen.

A worked example of time lost to the interface

Suppose a candidate takes 8 seconds longer per question on screen than on paper because of navigation and copying. In a 100-question paper, that adds 800 seconds, about 13 minutes, which is more than the time needed for ten questions. Practising on the interface reduces the overhead to a few seconds, a gain with no extra studying. The numbers are an illustration; time your own mocks with and without a screen to see the gap.

Step 5: Run a dress rehearsal

In the last two weeks, take at least two full mocks in the exam slot on an interface as close to the real one as you can find. Use only what you will have in the hall, follow the same section order and keep to the same checkpoints. Afterwards, note any interface surprises and fix them. See the exam day checklist for computer-based tests and how to attempt a mock test like the real exam.

Common mistakes

• Practising only on a phone when the exam is on a desktop.
• Never using the question palette or review feature before exam day.
• Copying figures carelessly to rough sheets.
• Marking too many questions for review and running out of time to resolve them.
• Not reading the exam's instructions on section movement and review.

Choose an online test from the practice tests directory and apply the steps above. For mode comparisons, read online vs offline mock tests.