It shows good manners if you take a moment of silence before answering a question as this demonstrates that you are giving the question the appropriate consideration.
When entering a Malaysian home, always take your shoes off. Only use the right hand for eating or touching another person as the left hand is regarded unclean.
Business presents are not very common, but in some cases where you might have to make a gift pay attention to the Muslim rules. Do not give alcohol, pork meat or something made of pigskin.