Nutanix NCS-Core Practice Test - Questions Answers, Page 16

The manage_ovs command requires specific interface names to be added or configured under a bridge or bond. In the provided scenario, the command failed because it generically referred to '1g' which is not a recognized interface or valid parameter syntax. For the command to work correctly, each individual interface name must be specified. In this case, the missing parameter was the specific interface name 'eth0' for one of the 1GbE NICs. The corrected command should explicitly include the NIC names, e.g., --interfaces eth0,eth1.

Reference:

Nutanix Bible

Nutanix University NCS-Core Materials

When a VM is unable to communicate on the network despite having an IP address assigned, one common issue is incorrect network configuration in terms of VLAN assignment. In the Nutanix AHV, VLANs are configured and managed within Prism Element. The consultant should verify that the virtual NIC (vNIC) of the VM is correctly configured to the intended VLAN that corresponds with the rest of the network. This ensures that the VM can communicate with other devices on the same network segment.

Reference:

Nutanix Bible

Nutanix University NCS-Core Materials

For licensing reasons and to ensure compliance with software license terms, particularly for databases like SQL and Oracle RAC, VM-Host affinity policies are used. These policies help in pinning VMs to specific hosts. In this scenario, SQL Servers must be confined to specific hosts to manage licensing costs effectively, and similarly, Oracle RAC servers must be on separate hosts. The VM-Host affinity policy allows for such configuration by defining rules that keep VMs on specific hosts or separate them as needed.

Reference:

Nutanix Bible

Nutanix University NCS-Core Materials

In a Nutanix AHV cluster configuration with multiple NICs and ToR switches, achieving high throughput and maintaining link redundancy are critical. The configuration provided in Option D utilizes LACP (Link Aggregation Control Protocol) with active mode, which allows for aggregating multiple network connections in parallel to increase throughput and provide redundancy. The balance-tcp mode of the bonding ensures optimal traffic distribution based on the TCP session, ensuring each session can utilize maximum available bandwidth across multiple links. This setting is crucial for environments requiring high network performance and reliability.

Reference:

Nutanix Bible

Nutanix University NCS-Core Materials

The Best Practices guide for vSphere Networking can be found under the 'Software Documentation' section of the Nutanix Support Portal. This section typically houses comprehensive guides and detailed documentation on various software components, including best practices for configuring and managing vSphere networking in a Nutanix environment.

Nutanix Support Portal: https://portal.nutanix.com

Nutanix Documentation on vSphere Integration: Nutanix Software Documentation

The requirements specify the use of LACP with multiple VLANs and without the use of a native VLAN. Trunk ports must be configured to carry multiple VLANs, which is necessary for scenarios involving LACP across multiple switches (MLAG or vPC). Setting the native VLAN to default and not using it in traffic management while trunking the ports meets these needs effectively.

Reference: Nutanix Bible (https://www.nutanixbible.com/), Nutanix Official YouTube Training Series

Validating software compatibility for a Nutanix cluster installation necessitates the identification of the AOS version and the type of Hypervisor in use. AOS is central to the Nutanix infrastructure, governing storage, compute, and networking functions. The hypervisor layer is critical as it supports the virtual machines running on the cluster. Compatibility between these components ensures stable operation and support for all features.

Reference: Nutanix Certified Services - Core (NCS-Core) Learning Documents

Within a Nutanix cluster, the subnet 192.168.5.0/24 is typically reserved for internal connectivity. This subnet is used for the internal communication between Nutanix Controller VMs (CVMs) and other cluster components. It ensures isolated and efficient network traffic management that is crucial for cluster operations.

Nutanix Network Configuration Guide: Nutanix Networking Guide

Nutanix Best Practices for Network Configuration: Nutanix Community

To ensure that the Foundation Applet is up-to-date across all nodes, the best approach is to use the Foundation VM. The Foundation VM allows consultants to manage and upgrade Foundation on all nodes centrally. This method avoids the necessity of manual upgrades on each node individually, thus ensuring a more efficient and error-free process, aligning with Nutanix's best practices for scalability and management of infrastructure.

Reference: The Nutanix Bible, the Nutanix University's NCS-Core 6.8 materials, and official Nutanix documentation on the Foundation VM.

To ensure the latest version of Foundation is used for imaging to support the latest hardware and software hypervisor configurations, the consultant should utilize the Foundation VM. This tool allows for upgrading the Foundation on all nodes simultaneously, ensuring consistency across the cluster. It streamlines the process by leveraging the existing Foundation infrastructure rather than requiring manual updates via a crash cart or the limited capabilities of the Foundation Applet for single node upgrades.

Nutanix Foundation Documentation: https://portal.nutanix.com

Nutanix Upgrade Guide: Nutanix Foundation Upgrade Process