An administrator is tasked with providing a Jr DBA with access to NBD with limited...

The correct answer is B because it allows the administrator to create a custom role with the specific privileges that the Jr DBA user needs, and then assign that role to the user. This way, the administrator can control the access level of the Jr DBA user without affecting the existing roles or users in NDB. Option A is incorrect because it involves cloning the Database Admin role, which has more privileges than the Jr DBA user requires, and then adding more privileges, which is unnecessary and redundant. Option C is incorrect because it involves creating a user for the Jr DBA, but not assigning a role to the user, which means the user will not have any privileges in NDB. Option D is incorrect because it involves cloning the Database Admin role, which has more privileges than the Jr DBA user requires, and then removing some of the privileges, which is inefficient and risky.

The following sources provide more information about the user roles and privileges in NDB:

Nutanix Database Management & Automation (NDMA) course, Module 8: Administering an NDB Environment, Lesson 8.6: Managing Access Controls in NDB

Nutanix Certified Professional - Database Automation (NCP-DB) v6.5, Knowledge Objectives, Section 6 - Administer an NDB Environment

Nutanix Database Service (NDB) User Guide, Chapter 8: Administering an NDB Environment, Section 8.6: Managing Access Controls in NDB