Nutanix NCS-Core Exam With Confidence Using Practice Dumps

The most straightforward approach for increasing security by disabling password authentication and moving to key-based SSH on a Nutanix cluster involves:

• C. Enable Cluster Lockdown and provide an RSA key: Cluster Lockdown mode restricts management access to the cluster, ensuring that only key-based SSH authentication is used to access the CVM and AHV hosts, enhancing security by eliminating the use of passwords.

References:

• Nutanix Bible (https://www.nutanixbible.com), particularly sections discussing secure access and authentication methods.
• Nutanix University: NCS-Core 6.8 Training (https://university.nutanix.com), where security features like Cluster Lockdown are covered.

If after performing a failover operation the virtual machines have no network access despite the network administrator confirming the correct subnets at both sites, the likely issue is:

• A. Network mappings are not configured for the Remote Site: This configuration oversight means that although the VMs are online, they do not have appropriate network settings that correspond to the network environment at the failover site, resulting in connectivity issues.

References:

• Nutanix Bible (https://www.nutanixbible.com), specifically the sections on disaster recovery and network configurations in failover scenarios.
• Nutanix University: NCS-Core 6.8 Training (https://university.nutanix.com), covering Data Protection and failover operations.

When Foundation VM and a laptop can ping each other but nodes are not being discovered, it suggests a network protocol issue. The consultant should enable IPv6 and multicast on the switch. Multicast is required for node discovery in many environments, especially when using Nutanix Foundation, as it helps in the detection and communication between nodes and the Foundation VM.References:

• Nutanix University - NCS-Core 6.8 Learning Path
• The Nutanix Bible, Foundation chapter (https://www.nutanixbible.com/)