When will you be able to start performing duties in this position?

This question is usually asked to assess your readiness to start work and planning. The answer depends on your current situation. For example:

• "I can start immediately after completing my current commitments, in about two weeks."
• "I am ready to start work from the first day of the next month."
• "I can start within a week after signing the contract."

It is important to be honest and specify a realistic timeframe to avoid misunderstandings.