NCS-Core Exam Dumps - Nutanix NCS Professional Questions and Answers

When nodes are mistakenly configured with incorrect IP addresses and are on a different network, the most effective way to address this is to re-run the Foundation process. By using Foundation, the nodes can be completely re-imaged with the correct network settings and then properly integrated into a new cluster. This ensures that all hardware and software configurations align with the intended network and cluster settings, avoiding potential conflicts and issues that might arise from manual adjustments.

References:

• Nutanix Bible: Cluster Initialization and Foundation
• Nutanix University: Using Foundation for Node Deployment

https://next.nutanix.com/how-it-works-22/vm-capacity-and-prism-capacity-are-different-33134

To find the correct VLAN ID to use during the Foundation of a new 3-node cluster, the consultant should refer to the:

• Deployment Questionnaire: This document typically contains detailed pre-engagement information gathered from the customer, including network specifications such as VLAN IDs. It provides the necessary context and configurations needed for a successful deployment.

References:

• Nutanix Bible (https://www.nutanixbible.com), where the importance of pre-deployment planning and documentation is highlighted.
• Nutanix University: NCS-Core 6.8 Training (https://university.nutanix.com), which covers the process of gathering and using deployment information.

Ref: https://next.nutanix.com/server-virtualization-27/iops-latency-issue-1 168

Upon reviewing the network configuration in the provided image and considering the setup in a Nutanix environment, the best action to improve network performance is to adjust the bonding mode for the bridge that includes multiple high-bandwidth interfaces.

Option C, "Configure balance-sib or balance-tcp mode for br0-up if switch configuration allows," is the most effective choice. The bonding mode "balance-sib" (source IP-based load balancing) or "balance-tcp" (TCP/IP layer balancing) can optimize the distribution of network traffic across multiple interfaces, thereby enhancing throughput and redundancy.

This approach utilizes the capabilities of multiple network interfaces more efficiently, distributing the load to prevent any one interface from becoming a bottleneck while providing failover redundancy.

References:This configuration strategy aligns with best practices for network setup in high-performance virtualized environments, as detailed in Nutanix’s networking configuration guides and the Nutanix Bible, ensuring optimal performance and reliability.

In the deployment of a two-node cluster at a remote branch office, the presence of a Witness VM is essential to manage the cluster quorum and data integrity in case one of the nodes fails or becomes unreachable. The Witness VM acts as an external arbitrator that helps prevent data unavailability and split-brain scenarios in a situation where the cluster nodes cannot communicate with each other. This configuration is necessary because with only two nodes, there isn't a third node to maintain quorum natively.References: Nutanix Bible, Nutanix University

The CVM IP address is a hard requirement for deploying a Nutanix cluster. Each CVM must have a unique IP address assigned to it as this IP address is critical for cluster operations, including data replication, management activities, and communication between CVMs and hypervisors. The other options, while important for various functionalities, do not represent a hard requirement for initial deployment.References:

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

When encountering timeout issues during Foundation using a customer-provided network switch, one common cause can be mismatched or unsupported network configurations, particularly concerning MTU sizes:

• A. Check jumbo frames support of the network switch: Ensuring that the switch supports jumbo frames (MTU of 9000) and is properly configured for it can prevent timeout issues that might arise due to packet fragmentation or dropped packets.

References:

• Nutanix Bible (https://www.nutanixbible.com), which discusses network prerequisites for successful Foundation.
• Nutanix University: NCS-Core 6.8 Training (https://university.nutanix.com), covering the technical setup and network requirements for cluster deployments.

To meet the requirement of having two weeks of daily snapshots and application-consistent snapshots on specific days (Friday, Saturday, Sunday), the best approach is to use two separate protection domains. This setup allows for greater flexibility in managing retention policies and ensuring application consistency. One protection domain will handle daily snapshots without application consistency for regular backups, and the other will handle application-consistent snapshots for critical times when databases and applications are updated, ensuring data integrity during these operations.

References:

• Nutanix Bible: Data Protection and DR
• Nutanix University: Creating and Managing Protection Domains

If ESXi 6.5 is not available as one of the choices for hypervisor during the Foundation process, the consultant should upload the ESXi image to the specific directory where Foundation expects to find hypervisor images. The correct path for this operation is /home/Nutanix/foundation/isos/hypervisor/esx. This allows the Foundation tool to detect and use the ESXi image for installation on the nodes.References: Nutanix Foundation Guide, Nutanix Support Documentation.