Exam NCP-MCI-7.5 Topic 1 Question 76 Discussion

Nutanix security guidance is explicit on this point. After adding an SSH public key and verifying connectivity, Nutanix recommends disabling password authentication for all CVMs and AHV hosts to reduce interactive access risk. The Security Guide notes that after the SSH key inclusion and connectivity validation are complete, password authentication should be disabled as the next hardening step. That makes B the correct answer.
This is a straightforward hardening sequence question. The administrator has already completed the prerequisite-public-key access is working-so the next step is to remove the weaker interactive method.
Core dumps, login banners, and UI session settings do not address SSH authentication exposure. Nutanix's security model favors moving from password-based remote shell access to key-based access only. Therefore B is the authentic and recommended next step.