To ensure the NDB server, NDB agent, and NDB database agent can communicate with the registered cluster via REST API calls, port 2009 must be opened. This port is used by NDB components to facilitate RESTful communication with the Nutanix cluster (e.g., Prism Element or Prism Central) for operations such as provisioning, monitoring, and management. Proper firewall configuration to allow traffic on this port is a prerequisite for NDB’s integration with the cluster.
Other options are incorrect:
B. 3205: Not a standard NDB port; used for other Nutanix services.
C. 3260: Associated with iSCSI, not REST API communication.
D. 9440: Used for Prism Element’s HTTPS management interface, not NDB-specific REST calls.
Thus, the verified answer is A, reflecting NDB’s REST API requirements.
Official Nutanix Database Automation References
Nutanix Database Management & Automation (NDMA) course, Module 2: Deploying and Configuring an NDB Solution, Lesson 2.1: Network and Port Requirements.
Nutanix Certified Professional - Database Automation (NCP-DB) v7.5Knowledge Objectives, Section 2: Deploy and Configure an NDB Solution, Objective 2.1: Prepare Hosts (applicable to v7.5).
Nutanix NDB Installation Guide: "Network Ports and Protocols" section, specifying port 2009.
