This question is an indicator that the position for which you are applying is a high-pressure job. So be prepared for what you are getting into.
The approach to answer this question is to demonstrate how you have already worked under pressure in an earlier job.
Sample answer is:
Yes. I have already worked in a high-pressure job earlier. We had a demanding client in my previous job. There were tight deadlines and strict quality criteria. I setup regular meetings with the client manager to discuss progress on a regular basis. Also we established processes for on call support so that we can provide high quality service and low turnaround time for any production features. I am sure I can apply my learning from that experience in this job.