Responses to not knowing interview answers
No matter how many hours you spend preparing for the job interview, you run the risk of being confronted with a question that you genuinely don’t know how to answer .During an job interview, you may experience a situation in which you don’t know the answer to a question. This can happen when the position is highly technical and includes many concepts and definitions or when you have a difficult time generating a response. If you’re interviewing for positions, learning more about what to do when you don’t know the answer to a question can be beneficial.

During an job interview, you may not have the knowledge to answer a question or need more time to generate a good answer. These are some steps you can follow to react if you don’t know the answer to a job interview question.
Related : Face job interview confidently
Here are 3 responses that you can use to navigate through such a situation:
Response 1:
Thank you for asking this question. Right now I don’t have an answer, but I will surely do some research around this and will get back to you!
Response 2:
Thank you for bringing this up. But, I don’t have much knowledge about this. However, I can assure you that I am a fast learner and will be able to learn quickly.
Response 3:
l am glad that you’ve asked this question. However, to be honest, right now I don’t have an exact answer. Can I borrow sometime to think over this?