How would you answer an interview scenario involving Interface Segregation Principle?

For an interview scenario involving Interface Segregation Principle, I would first clarify the business goal, scale, constraints, and the failure or quality attribute the interviewer wants to explore. ISP favors focused interfaces so consumers depend only on operations they actually need. In this scenario, a printer interface includes print, scan, fax, and staple but many devices support only print. Explain an ISP redesign. For production, design interfaces from consumer needs, keep related operations together, and separate capabilities when consumers vary. I would then explain the main alternatives and tradeoffs, identify likely failure modes, and describe how I would validate the solution through testing, observability, security controls, and recovery or rollback planning.