Nutanix NCS-Core Practice Test - Questions Answers, Page 23

In a five-node cluster with storage containers configured with a replication factor of 3, the behavior of VM High Availability when two AHV host failures occur with the non-default 'Guarantee mode' enabled is as follows:

Will ensure that all VMs can restart in case of two simultaneous AHV host failures: This mode prioritizes maintaining VM availability by reserving enough resources to restart VMs even with multiple host failures, as long as at least three hosts (matching the replication factor) remain functional.

Nutanix Bible (https://www.nutanixbible.com), specifically sections on VM High Availability and replication factors.

Nutanix University: NCS-Core 6.8 Training (https://university.nutanix.com), where best practices for VM High Availability are detailed.

If one power supply is disconnected from a NX-3235-G9 chassis, the behavior observed will be:

The hardware status updates to reflect the change in Prism Element, the hosts continues to run, and the Host hardware power status alert is sent: Modern Nutanix hardware like the NX-3235-G9 is designed with redundant power supplies to ensure that the loss of one does not impact the overall operation of the cluster. Prism Element updates the hardware status to notify administrators of the power supply issue, but there is no impact on running workloads.

Nutanix Bible (https://www.nutanixbible.com), particularly the sections on hardware management and monitoring.

Nutanix University: NCS-Core 6.8 Training (https://university.nutanix.com), which includes information on responding to hardware alerts and maintaining cluster health.

The IPMI address on a Nutanix hardware installation can be set in two ways:

BIOS configuration: Access the BIOS settings during boot-up to manually configure the IPMI address directly on the hardware.

ipmitool: Use the ipmitool command-line utility to configure the IPMI address from a remote session or script, which provides a way to automate or manage IP settings without needing physical access to the BIOS.

Nutanix Bible (https://www.nutanixbible.com), particularly the sections on hardware installation and IPMI settings.

Nutanix University: NCS-Core 6.8 Training (https://university.nutanix.com), detailing tools and techniques for IPMI configuration.

For continuing the cluster deployment without an NTP server immediately available:

A. An NTP server is not required for the initial foundation process of the cluster and can indeed be added later. This allows the deployment to proceed without delays, although it's critical to add NTP synchronization as soon as possible post-deployment to ensure proper cluster time management. B. If an NTP server is to be provided using an FQDN, then a DNS server must indeed be available. This is because the FQDN needs to be resolved to an IP address, which requires DNS resolution services. Options C and D are not strictly required as per Nutanix deployment standards; a single NTP server can suffice initially, and there's no requirement for it to be external or in a comma-separated list unless specifically dictated by network or organizational policies.

Reference: Nutanix Installation and Configuration Guide, Nutanix Foundation Tool documentation.

Given that the customer's ToR switches are 25GbE and are already operational, the most reliable and straightforward method for imaging these NX nodes with dual 25GbE and 10GbE ports is to use the 25GbE production switches. The appropriate hardware setup includes:

4 DAC (Direct Attach Cable) cables for connecting the 25GbE NICs on the nodes to the ToR switches.

5 Ethernet cables to manage connectivity between nodes and potentially to a flat Ethernet switch and a laptop for Foundation process control. This setup ensures the fastest and most reliable network performance during imaging, leveraging the existing high-speed infrastructure.

Reference: Nutanix Hardware and Installation Guide, Best Practices for Network Configuration during Foundation.

The plan to deploy a small Prism Central (PC) instance will not work for the customer because the additional services required, especially Flow Microsegmentation and MS-SQL Server Monitoring, demand more substantial resources than a small PC instance can support. The correct approach: B. The additional services the customer needs, including Nutanix Disaster Recovery, MS-SQL Server Monitoring, and Flow Microsegmentation, require a larger resource pool for adequate performance and functionality, making a minimum of a large size PC deployment necessary. Options C and D point to specific requirements but are incorrect in stating the exact size or additional licensing for MS-SQL alone; rather, the overall resource demand across services necessitates a larger PC deployment.

Reference: Nutanix Prism Central Deployment Guide, Nutanix Services Specifications.

The failure of the vMotion operation indicated by the error message could most plausibly be caused by:

A . The vmknic (VMkernel network interface card) configured with a conflicting IP address. This conflict can prevent the ESXi hosts from establishing a connection over the VMotion network, as each host must have a unique IP address on the VMotion network to facilitate proper migration communications. Option B, involving NIOC settings, and option D, involving vSS configuration, could influence performance but are less likely to cause a complete failure to connect. Option C, related to the Foundation service, is not relevant to vMotion networking issues directly.

Reference: VMware vSphere Networking Documentation, Nutanix Integration with VMware Environments.

To satisfy the customer's requirements for maximum uptime and throughput in an AHV cluster deployment with link aggregation at the Top-of-Rack (TOR) switches, the consultant should:

Bonded 2 x 40GbE Adapters with LACP Enabled for Storage Traffic and Guest Traffic using balance-tcp: This configuration leverages Link Aggregation Control Protocol (LACP) to combine the bandwidth of the two 40GbE adapters, enhancing both redundancy and throughput. The balance-tcp mode ensures effective load balancing of traffic based on TCP session ensuring optimal use of available bandwidth and improved fault tolerance.

Nutanix Bible (https://www.nutanixbible.com), particularly the sections discussing network configurations and LACP.

Nutanix University: NCS-Core 6.8 Training (https://university.nutanix.com), which covers advanced network settings for performance optimization.

During the closeout of a cluster imaging engagement, a key action to include in the Closeout Checklist is:

Provide an overview of Nutanix Prism Central: This is crucial as Prism Central is the management and operations platform for Nutanix environments, providing visibility and control over clusters and workloads. Giving an overview of this tool is essential for the customer to manage their newly imaged clusters effectively.

Nutanix Bible (https://www.nutanixbible.com), where management tools like Prism Central are discussed.

Nutanix University: NCS-Core 6.8 Training (https://university.nutanix.com), which includes training on using Prism Central for cluster management.