NCP-BC practice question 6 of 25

An administrator executes an Unplanned Failover of web server VMs from an on-premises AZ to a Nutanix Cloud Cluster (NC2) on AWS. The Recovery Plan…

An administrator executes an Unplanned Failover of web server VMs from an on-premises AZ to a Nutanix Cloud Cluster (NC2) on AWS. The Recovery Plan completes, and the VMs are running. However, external users cannot access the websites hosted on these VMs. The administrator verifies that the firewall rules are set correctly. What specific configuration is required for these VMs to be reachable from the external network after failover to NC2?

Answer options

A: The administrator must enable Promiscuous Mode on the NC2 virtual switch.

B: Floating IP addresses must be configured for the guest VMs. Correct answer

C: A VPN connection must be established between the NC2 cluster and the external users.

D: The VMs must be migrated to a stretched L2 subnet.

Correct Answer:

B. Floating IP addresses must be configured for the guest VMs.

Explanation

When workloads fail over to NC2 on AWS, external traffic must reach them through AWS Elastic IPs that NC2 exposes as “Floating IPs.” Leap recovery plans can automatically assign the predefined Floating IPs; without them, VMs keep only their private subnet addresses and are unreachable from the Internet.

Why Incorrect

A. NC2 vSwitches already allow required traffic; promiscuous mode is unnecessary.
C. VPN is optional for private access; public reachability relies on Floating IPs instead.
D. A stretched L2 only maintains internal addressing; it does not provide public ingress.

References

1. Nutanix Cloud Clusters (NC2) on AWS Networking Guide v2.0, §5.1 “Using Floating IPs,” p.32-34.

2. Nutanix Leap for NC2 Administration Guide v1.1, “Creating Floating IP mappings,” p.15-17.

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