This question is a tricky one and pay attention who is asking the question.
If this question is coming from a person with similar skills set as you, be careful! Red lights are blinking now!
This question is asked in order to determine about your goals and how much interest you have in actually doing these future tasks. If you will not give a detailed response then most probably you will not be considered in the next step. In case you really want the job then make sure you are very clear in indicating your interest in doing it.
I have been always interested in “xyz” and I am hoping to join your comany and being able to do it.
If you are not sure about what exactly you will be doing, you can always refer to your similar past activity.
If this question is coming from the Hiring Manager then you can tell about your long term goals.
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