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

After an onsite cluster deployment, the As-Built Guide is a crucial document that provides detailed information about the final configuration of the system. However, certain data in the As-Built Guide might require adjustment or might be missing completely.

In this case, the Nutanix Node Port Layout (Option A) and the Physical Rack Layout (Option C) are two data that might require adjustment or might be missing completely. The Nutanix Node Port Layout provides a visual representation of the network connections for each node in the cluster, while the Physical Rack Layout provides a visual representation of the physical arrangement of the nodes in the rack. Both of these data are crucial for understanding the physical and network configuration of the cluster, and any inaccuracies or omissions in these data could lead to confusion or issues in the future.

Therefore, the consultant should ensure that the Nutanix Node Port Layout and the Physical Rack Layout in the As-Built Guide are accurate and complete.

References:

• [Nutanix Support & Insights]
• [Nutanix Community]
• [Nutanix Documentation]
• [Nutanix Certified services - core (NCS-Core) 6.8 - Nutanix University]
• [Nutanix Bible]
• [Nutanix Certified services - core (NCS-Core) 6.8 Playlist - YouTube]

ref http://www.joshodgers.com/tag/cpu-ready/

For a configuration that aims to utilize all available 10G links, achieve maximum throughput per VM, and ensure redundancy with fast reconvergence during link failure, the optimal setting would be to configure Balance-TCP on bridge br0. This setting distributes the load across all available network paths based on the TCP session, maximizing the utilization of network interfaces and ensuring redundancy. This approach is particularly effective in environments with multiple network paths and ensures efficient network traffic management.References:

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

During the Knowledge Transfer phase, customers typically learn about Nutanix basics and their specific environment at a high level through "Technical Handoff Slides." This part of the training and handover process provides a broad overview of the installed solution, how it operates, and how it interacts with the existing infrastructure, making it essential for foundational understanding.References: Nutanix Bible, Nutanix University NCS-Core 6.8 learning materials

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.

The issue of VMs not being able to ping the default gateway from a newly created VM network on VLAN 20, while the Nutanix cluster uses VLAN 10, most likely stems from the switch port configuration. For the VMs on VLAN 20 to communicate outside their local network, the switch port to which the Nutanix nodes are connected must be configured as a trunk. This configuration allows multiple VLANs to coexist on the same physical port and enables routing between them. Without the trunk setup, the VLAN 20 traffic is restricted and cannot reach the network beyond the switch, including the default gateway.References: Nutanix Network Configuration Guide, Best Practices for VLAN Configurations.SZXCDESX

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.

References:

• Nutanix Support Portal: https://portal.nutanix.com
• Nutanix Documentation on vSphere Integration: Nutanix Software Documentation

Before starting the Foundation process, the consultant should prepare the network by:

• On Nutanix NX Series, connect the IPMI port and any one of the data ports to the switch: This ensures that the IPMI (for management and remote access) and at least one data port (for cluster communication and data traffic) are connected and operational, facilitating a smooth foundation process.

References:

• Nutanix Bible (https://www.nutanixbible.com), especially sections on initial hardware setup and network preparations.
• Nutanix Hardware Setup Guide from Nutanix University (https://university.nutanix.com), detailing the specific steps for networking configurations during initial setup.