Nutanix NCS-Core Exam Practice Test Instant Access

Question 1

An administrator has a VM that consumes large amounts of storage and has the following characteristics:

* Create large / sequential writes

* Data must be kept for years

* Data is normally only accessed at the end of the year to run report

The administrator decides to use Erasure Coding to save space.

Which feature should the administrator utilize to save space for this VM?

AInline Compression

BFlash Mode

CCache Dedup

DPost-Process Compression

Answer : D

Erasure coding is a method of data protection in which data is broken into fragments, expanded and encoded with redundant data pieces, and stored across a set of different locations or storage media. The goal of erasure coding is to enable data that becomes corrupted at some point in the disk storage process to be reconstructed by using information about the data that's stored elsewhere in the array1.

In the context of Nutanix, erasure coding increases the usable capacity on a cluster. Instead of replicating data, erasure coding uses parity information to rebuild data in the event of a disk failure1. The capacity savings of erasure coding is in addition to deduplication and compression savings1.

Given the characteristics of the VM in the question (large/sequential writes, data kept for years, data accessed only at the end of the year), Post-Process Compression would be the most suitable feature to utilize to save space. This is because Post-Process Compression, as the name suggests, compresses data after it has been written to the storage, which is suitable for data that is not accessed frequently2.

Erasure Coding | Nutanix Community

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Question 2

A consultant is running the Foundation VM using desktop virtualization software. No nodes are discovered.

What should the consultant verify first?

ANAT

BHost-only Adapter

CBridged Adapter

DInternal Network

Answer : C

When using the Foundation VM in a desktop virtualization environment and nodes are not being discovered, the first setting that the consultant should verify is the network adapter configuration, specifically ensuring it is set to a Bridged Adapter. This setting allows the virtual machine hosting the Foundation VM to connect directly to the physical network, making other network nodes visible and reachable during the discovery process. This direct network connection is critical for the Foundation tool to function correctly and discover other nodes. Reference: Nutanix Bible, Nutanix University

Question 3

A customer design calls for link aggregation. Despite the consultant verifying all hosts are correctly configured for fallback per Nutanix best practices, initial testing reveals the aggregate bond fails to pass traffic and shows a status of configured.

What is the most likely cause for the bond disabling and reporting a "configured" status?

AThe uplinks in the bond need to be turned on.

BThe ports need to be flushed.

CFailed negotiation due to misconfiguration on ToR switches.

DThe bond needs to be reconfigured for balance s_b mode.

Answer : C

If link aggregation is failing to pass traffic and is only showing a status of 'configured,' the most likely cause is a failed negotiation due to a misconfiguration on the Top-of-Rack (ToR) switches. This typically occurs when the aggregation protocols (like LACP) or the settings on the ToR switches do not match the configuration on the hosts. Ensuring that both ends of the aggregated links are configured identically and properly for the expected protocols is critical for successful link aggregation. Reference: Nutanix Network Configuration Guide, Best Practices for Network Aggregation.

Question 4

A consultant needs to verify the make and model of the systems that will be imaged with Foundation. The consultant does not have the Bill of Materials (BOM) available to review.

When should the consultant verify the make and model to prepare for the cluster deployment?

ADuring the Foundation Process

BWhile conducting the Tech Review Call

CUpon arriving on-site

DWhen reviewing the Statement of Work (SOW)

Answer : B

The make and model of the systems should be verified during the Tech Review Call. This step is essential to ensure that all necessary information is collected and verified before any physical interaction with the hardware. Verifying these details during the call helps in preparing adequately for the cluster deployment, allowing the consultant to anticipate and mitigate any compatibility or configuration issues before arriving onsite. Reference: Nutanix Foundation Guide, Pre-installation Checklist Documents.

Question 5

A three-node cluster has a Nutanix Files instance with three FSVMs.

What happens after a node failure?

AThe affected FSVM will get live-migrated to another node.

BThe affected FSVM will not be restarted on another node due to its agent VM setting.

CThe affected FSVM will not be restarted on another node due to its VM-to-VM anti-affinity settings.

DThe affected FSVM will be restarted on another node.

Answer : D

Ref: https://portal.nutanix.com/page/documents/details?targetId=Files-v3_6:fil-files-high-availability-c.html

Question 6

A consultant creates a Windows VM after installing a new Nutanix cluster running AHV. The consultant has statically assigned an IP address to the VM but it is unable to communicate on the network.

Which action should the consultant take to resolve this issue?

AConfirm that IPv6 is enabled on the guest VM.

BConfirm that the VM vNIC is tied to the correct VLAN in Prism Element.

CMount and install the Nutanix Guest Tools.

DSet a Group Policy to make sure the Windows Firewall is disabled.

Answer : B

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

Question 7

A consultant deploys a Nutanix cluster with AOS and ESXi. The cluster is managed by a vCenter server.

After installation, what should the consultant do to ensure the cluster will support network segmentation?

AConnect both CVM eth0 and eth2 interfaces to vSwitchNutanix.

BManually assign an IP address to the CVM eth2 interface.

CConnect both CVM eth0 and eth2 interfaces to the assigned portgroups.

DAdd another vSwitch to the cluster.

Answer : C

After deploying a Nutanix cluster with AOS and ESXi managed by a vCenter server, the consultant should ensure that both CVM eth0 and eth2 interfaces are connected to the assigned portgroups on the standard or distributed switch. This setup allows for network segmentation and proper traffic isolation, which is crucial for maintaining network security and efficiency in a virtualized environment. Reference: Nutanix Bible, Nutanix University NCS-Core 6.8 learning materials

Nutanix Certified Services Core Infrastructure Professional v6.8 NCS-Core Exam Practice Test