Discuss potentially discriminatory topics during the interview and ways to respond to potentially discriminatory questions that may be asked by the interviewer

What will be an ideal response?

Answer: A variety of federal, state, and local laws prohibit employment discrimination on the basis of race, ethnicity, gender, age (at least if you're between 40 and 70), marital status, religion, national origin, or disability. Interview questions designed to elicit information on these topics are potentially illegal. If an interviewer asks a potentially unlawful question, consider your options carefully before you respond. You can answer the question as it was asked, you can ask tactfully whether the question might be prohibited, you can simply refuse to answer it, or you can try to answer "the question behind the question." For example, if an interviewer inappropriately asks whether you are married or have strong family ties in the area, he or she might be trying to figure out if you're willing to travel or relocate—both of which are acceptable questions. Only you can decide which is the right choice based on the situation.
Even if you do answer the question as it was asked, think hard before accepting a job offer from this company if you have alternatives. Was the off-limits question possibly accidental (it happens) and therefore not really a major concern? If you think it was intentional, would you want to work for an organization that condones illegal or discriminatory questions or that doesn't train its employees to avoid them? If you believe an interviewer's questions to be unreasonable, unrelated to the job, or an attempt to discriminate, you have the option of filing a complaint with the U.S. Equal Employment Opportunity Commission or with the agency in your state that regulates fair employment practices.