Free Practice Questions for Nutanix NCS-Core Exam

To satisfy the customer's request for additional performance and resiliency tests on a cluster, deploying Nutanix X-Ray is the best option. X-Ray is a performance testing and benchmarking tool specifically designed for hyper-converged infrastructures and provides a range of tests that simulate real-world scenarios, stress tests, and resiliency tests. This tool allows the consultant to comprehensively assess the performance, fault tolerance, and operational resilience of the Nutanix cluster, meeting the customer's testing requirements effectively.References: Nutanix X-Ray Documentation, Nutanix Performance Testing Best Practices.

Nutanix Enablement Starter Packs (ESPs) are resources designed to aid Nutanix partners in ramping up their knowledge and capabilities with Nutanix solutions. These packs typically include training materials, guides, promotional materials, and more. They are most commonly found in the Nutanix Partner Portal, which is designed to support Nutanix partners in their sales and technical education efforts.

References:

Nutanix Bible: Partner Resources

Nutanix University: Partner Enablement Programs

When VMs on the same node can communicate but fail to connect to other parts of the network following changes made to Top of Rack switches, the issue often stems from a VLAN configuration error on the switches. VMs on the same node communicating successfully indicates that the local switch configuration is intact, but inability to reach external network segments points to an incorrect VLAN setup on the broader network, likely introduced during the recent changes to the Top of Rack switches.References: Nutanix Networking Guide, Troubleshooting Network Connectivity in Nutanix.

For high-performance iSCSI workloads, especially in a Nutanix environment using AHV nodes and a 10 GbE interface, enabling Jumbo Frames on both the Host and the Controller Virtual Machine (CVM) is recommended. Jumbo Frames allow for a larger payload per network packet, which reduces the overhead required to send large amounts of data. Enabling Jumbo Frames on both the host and the CVM ensures that both ends of the communication channel can handle larger packets, thereby optimizing throughput and reducing latency for high-performance workloads.

References:

Nutanix Bible: Networking Best Practices

Nutanix University: Nutanix Network Optimization

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.References:

Nutanix Bible

Nutanix University NCS-Core Materials

When facing connectivity issues between the host workstation and the Foundation VM, ensuring proper network configuration is crucial. Removing and re-importing the Foundation VM can help reset any configuration issues, particularly ensuring that the virtual NIC is set to the correct mode, such as Host-Only, to facilitate direct communication with the host. Confirming the IP addresses and subnet masks ensures that both the host and the VM are on the same network segment, which is essential for successful communication. This step verifies that there are no IP configuration errors causing the connectivity issue.

References:

Nutanix Bible: Foundation VM Setup and Configuration

Nutanix University: Foundation VM Networking Configuration

When deploying the latest AOS along with the latest Nutanix hardware, it is essential for the consultant to review multiple sources of information to ensure a successful installation. Release Notes provide details about new features, improvements, and known issues in the latest version of AOS. Software Product Interoperability outlines compatibility between different software versions, ensuring that the AOS and any integrated applications or environments will function correctly. Field & Security Advisories inform about potential security issues and recommended practices to avoid common pitfalls or security risks.

References:

Nutanix Bible: Documentation and Release Information

Nutanix University: Installation and Security Best Practices

During the Knowledge Transfer phase, providing the customer with the As-Built Guide, technical slides and checklists, along with links to documentation and resources, is optimal. This set of materials ensures the customer receives both detailed and high-level information, supporting a thorough understanding of the deployment and operational procedures, and it allows for easy reference to official resources for ongoing needs.References: The Nutanix Bible, NCS-Core 6.8 learning documentation, and best practices in IT project documentation.

When forecasting infrastructure requirements for a new program in a Nutanix environment where all existing applications will be decommissioned, the most straightforward method is to disregard any workload calculations that include existing applications. This ensures that the analysis focuses solely on the needs of the new program.

Option A, "Check the Disregard Existing Workloads radio button in the Runway scenario," is the correct choice. Nutanix Runway is a tool designed to help administrators forecast and plan infrastructure requirements based on upcoming needs without being skewed by current utilizations that are scheduled to be decommissioned.

This method allows for a cleaner, more accurate projection of resources needed for the new applications, disregarding any resources currently in use that will no longer be relevant.

References:This approach is detailed in Nutanix planning and forecasting documentation, ensuring administrators can plan accurately for infrastructure changes and needs without the interference of outgoing workloads.

Given the symptoms where two nodes correctly failover but lose communication with the third node after an SFP+ is removed, the first action should be to:

Validate the SFP+ is fully plugged into the node and switch: This is critical because a loose or partially connected SFP+ can cause intermittent network issues, which seems to be the problem based on the scenario described.

References:

Nutanix Bible (https://www.nutanixbible.com ), particularly the network troubleshooting sections.

Nutanix Field Installation Guide, which provides detailed steps on how to ensure hardware components like SFPs are correctly installed.