Free Nutanix NCP-US-6.5 Practice Exam with Questions & Answers | Set: 3

The error log that the administrator should review to determine why the relative service is down is arithmos.ERROR. Arithmos is a service that runs on each CVM and provides volume group protection functionality for Volumes. Volume group protection is a feature that allows administrators to create protection policies for volume groups, which define how often snapshots are taken, how long they are retained, and where they are replicated. If arithmos.ERROR log shows any errors or exceptions related to volume group protection, it can indicate that the relative service is down or not functioning properly. References: Nutanix Volumes Administration Guide, page 29; Nutanix Volumes Troubleshooting Guide

The appropriate configuration to verify to allow successful Objects cluster deployment to this ESXi cluster is to ensure that vCenter in PE cluster is registered using FQDN (Fully Qualified Domain Name) and that vCenter details in Objects UI are using FQDN. FQDN is a domain name that specifies the exact location of a host in the domain hierarchy. For example, esxi01.nutanix.com is an FQDN for an ESXi host. Using FQDN instead of IP addresses can avoid certificate validation errors when deploying Objects clusters to ESXi clusters. References: Nutanix Objects User Guide, page 9; Nutanix Objects Troubleshooting Guide, page 5

Nutanix Objects, part of Nutanix Unified Storage (NUS), supports replication rules to replicate bucket data to a destination Object Store for disaster recovery or data redundancy. When creating a replication rule, the administrator selects a destination Object Store from a drop-down list. If this list is empty, it indicates that the system cannot display any available Object Stores, which can be due to several reasons.

Analysis of Options:

Option A (The deployment of the Object Store is not in a running state): Correct. For an Object Store to appear in the drop-down list as a replication destination, it must be in a running state. If the destination Object Store is not running (e.g., due to a failure, maintenance, or incomplete deployment), it will not be listed as an available target for replication.

Option B (The Remote site has not been configured in the Protection Group): Incorrect. Nutanix Objects replication does not use Protection Groups, which are a concept associated with Nutanix Files or VMs in Prism Central for disaster recovery. Objects replication is configured directly between Object Stores, typically requiring a remote site configuration, but this is not tied to Protection Groups. The issue of an empty drop-down list is more directly related to the Object Store’s state or permissions.

Option C (The deployment of the Object Store is not in a Complete state): Incorrect. While an incomplete deployment might prevent an Object Store from being fully operational, Nutanix documentation typically uses “running state” to describe the operational status of an Object Store (as in option A). “Complete state” is not a standard term in Nutanix Objects documentation for this context, making this option less accurate.

Option D (The logged-in user does not have permissions to view the Object Store): Correct. Nutanix Objects uses role-based access control (RBAC). If the logged-in user lacks the necessary permissions to view or manage the destination Object Store, it will not appear in the drop-down list. For example, the user may need “Object Store Admin” privileges to see and select Object Stores for replication.

Selected Conditions:

A: An Object Store not in a running state (e.g., stopped, failed, or under maintenance) will not appear as a destination for replication.

D: If the user lacks permissions to view the Object Store, it will not be visible in the drop-down list, even if the Object Store is running.

Exact Extract from Nutanix Documentation:

From the Nutanix Objects Administration Guide (available on the Nutanix Portal):

“When configuring a replication rule, the destination Object Store must be in a running state to appear in the drop-down list. Additionally, the user configuring the replication rule must have sufficient permissions (e.g., Object Store Admin role) to view and manage the destination Object Store. If the Object Store is not running or the user lacks permissions, the drop-down list will appear empty.”

The organization is deploying a Nutanix cluster to provide block storage (via iSCSI), CIFS shares, and NFS exports (via Nutanix Files). Nutanix Files, part of Nutanix Unified Storage (NUS), uses File Server Virtual Machines (FSVMs) to serve CIFS (SMB) and NFS shares to end users. The security policy requires separate networks:

Management traffic on VLAN 500 (10.10.50.0/24).

iSCSI traffic on VLAN 510 (10.10.51.0/24).

Files traffic on VLAN 520 (10.10.52.0/24).

To ensure CIFS and NFS traffic uses VLAN 520 and is accessible by end users, the cluster must be configured to route Files traffic over the correct network.

Analysis of Options:

Option A (Create a new subnet in Network Configuration, assign it VLAN 520, and configure the Files client network on it): Correct. Nutanix Files requires two networks: a Client network (for CIFS/NFS traffic to end users) and a Storage network (for internal communication with the cluster’s storage pool). To isolate Files traffic on VLAN 520, the administrator should create a new subnet in the cluster’s Network Configuration (via Prism Element), assign it to VLAN 520, and then configure the Files instance to use this subnet as its Client network. This ensures that CIFS and NFS traffic is routed over VLAN 520, making the shares accessible to end users on that network.

Option B (Configure the Data Services IP in Prism Element with an IP on VLAN 520): Incorrect. The Data Services IP is used for iSCSI traffic (as seen in Question 25, where it was configured for VLAN 510). It is not used for CIFS or NFS traffic, which is handled by Nutanix Files. Configuring the Data Services IP on VLAN 520 would incorrectly route iSCSI traffic, not Files traffic.

Option C (Create a new virtual switch in Network Configuration, assign it VLAN 520, and configure the Files client network on it): Incorrect. A virtual switch is used for VM networking (e.g., for AHV VMs), but Nutanix Files traffic is handled by FSVMs, which use the cluster’s network configuration for external communication. While FSVMs are VMs, their network configuration is managed at the Files instance level by specifying the Client network, not by creating a new virtual switch. The correct approach is to configure the subnet for the Files Client network, as in option A.

Option D (Configure the Data Services IP in Prism Central with an IP on VLAN 520): Incorrect. As with option B, the Data Services IP is for iSCSI traffic, not CIFS/NFS traffic. Additionally, the Data Services IP is configured in Prism Element, not Prism Central, making this option doubly incorrect.

Why Option A?

Nutanix Files requires a Client network for CIFS and NFS traffic. By creating a new subnet in the cluster’s Network Configuration, assigning it to VLAN 520, and configuring the Files instance to use this subnet as its Client network, the administrator ensures that all CIFS and NFS traffic is routed over VLAN 520, meeting the security policy and ensuring accessibility for end users.

Exact Extract from Nutanix Documentation:

From the Nutanix Files Administration Guide (available on the Nutanix Portal):

“Nutanix Files requires a Client network for CIFS and NFS traffic to end users. To isolate Files traffic on a specific network, create a subnet in the cluster’s Network Configuration in Prism Element, assign it the appropriate VLAN (e.g., VLAN 520), and configure the Files instance to use this subnet as its Client network. This ensures that all client traffic (SMB/NFS) is routed over the specified network.”

Smart Tiering in Nutanix Files, part of Nutanix Unified Storage (NUS), allows infrequently accessed (Cold) data to be tiered to external storage, such as a public cloud (e.g., AWS S3, Azure Blob), to free up space on the primary cluster (as noted in Question 34). Configuring Smart Tiering requires setting up a connection to the external storage target, which involves providing credentials and connectivity details.

Smart Tiering requires a connection to an external storage target, such as a cloud provider. The access key and secret key are mandatory to authenticate Nutanix Files with the target (e.g., an S3 bucket), enabling secure data tiering. Without these credentials, the tiering configuration cannot be completed, making them a mandatory criterion.

Exact Extract from Nutanix Documentation:

From the Nutanix Files Administration Guide (available on the Nutanix Portal):

“To configure Smart Tiering in Nutanix Files, you must provide the access key and secret key for the external storage target (e.g., AWS S3, Azure Blob). These credentials are mandatory to authenticate with the cloud provider and enable data tiering to the specified target.”

Workload optimization in Nutanix Files, part of Nutanix Unified Storage (NUS), refers to the process of tuning the Files deployment to handle specific workloads efficiently. This involves scaling resources to match the workload demands, and the primary entity for optimization is the number of File Server Virtual Machines (FSVMs).

Analysis of Options:

Option A (Protocol): Incorrect. While Nutanix Files supports multiple protocols (SMB, NFS), workload optimization is not directly based on the protocol. Protocols affect client access, but optimization focuses on resource allocation.

Option B (File type): Incorrect. File type (e.g., text, binary) is not a factor in workload optimization for Files. Optimization focuses on infrastructure resources, not the nature of the files.

Option C (FSVM quantity): Correct. Nutanix Files uses FSVMs to distribute file service workloads across the cluster. Workload optimization involves adjusting the number of FSVMs to handle the expected load, ensuring balanced performance and scalability. For example, adding more FSVMs can improve performance for high-concurrency workloads.

Option D (Block size): Incorrect. Block size is relevant for block storage (e.g., Nutanix Volumes), but Nutanix Files operates at the file level, not the block level. Workload optimization in Files does not involve block size adjustments.

Why FSVM Quantity?

FSVMs are the core entities that process file operations in Nutanix Files. Optimizing for a workload (e.g., high read/write throughput, many concurrent users) typically involves scaling the number of FSVMs to distribute the load, adding compute and memory resources as needed, or adjusting FSVM placement for better performance.

Exact Extract from Nutanix Documentation:

From the Nutanix Files Administration Guide (available on the Nutanix Portal):

“Workload optimization in Nutanix Files is achieved by adjusting the number of FSVMs in the file server. For high-performance workloads, you can scale out by adding more FSVMs to distribute the load across the cluster, ensuring optimal resource utilization and performance.”

Nutanix Files provides a built-in ransomware prevention feature that allows administrators to block malicious file signatures from being written to the file system. However, this feature has a limit of 300 signatures per share or export. If the list of malicious file signatures to block is greater than 300, a third-party solution is recommended2

Neither File Analytics nor Data Lens supports signature-based ransomware prevention with a large list of malicious file signatures (300+). Signature-based blocking requires a dedicated security solution with a robust signature database, which third-party tools are designed to handle. Nutanix Files supports integration with such tools, making a third-party solution the best choice for this requirement.

Exact Extract from Nutanix Documentation:

From the Nutanix Files Administration Guide (available on the Nutanix Portal):

“For advanced ransomware prevention requiring signature-based blocking, such as when the list of malicious file signatures exceeds 300, Nutanix Files supports integration with third-party security solutions. These solutions can handle large signature databases and perform file scanning/blocking at scale, complementing the behavioral detection capabilities of File Analytics and Data Lens.”

Nutanix Volumes uses IQN-based authorization to control access to volumes. The administrator must specify the IQN of the host that needs to access the volume when creating or editing the volume. If the host’s IQN is not authorized, it will not be able to see the target in the MS iSCSI Initiator3. References: Nutanix Volumes Administration Guide3

The exhibit illustrates a data protection setup involving Nutanix Files, a component of Nutanix Unified Storage (NUS). It shows two sites: a Primary Site and a Remote Site, each with a File Server (FILE SVR1 and FILE SVR2, respectively). The Primary Site has shares (Share1, Share2, Share3, Share4) with a replication policy applied. Share1 and Share2 are marked as RW (read-write) on the Primary Site and RO (read-only) on the Remote Site, while Share3 has a replication policy with RW on both sites. Share4 is RO on the Primary Site and RW on the Remote Site. Clients access the shares on both sites, and the replication policy governs the data protection mechanism between the sites.

Analysis of the Exhibit:

Two Sites (Primary and Remote): The setup involves replication between two sites, indicating a disaster recovery (DR) or high-availability scenario.

Replication Policy: The replication policy is applied to the shares, with specific shares being RW on one site and RO on the other (e.g., Share1 and Share2 are RW on Primary, RO on Remote). This suggests asynchronous replication, as synchronous replication would typically allow RW access on both sites with zero data loss.

Share3 (RW on Both Sites): This indicates a special configuration, possibly for load balancing or specific workload requirements, but the primary focus is on the replication policy for DR.

Share4 (RO on Primary, RW on Remote): This suggests a failover scenario where the Remote Site can take over as the primary for certain shares.

Analysis of Options:

Option A (Smart DR): Incorrect. Smart DR is a Nutanix feature that simplifies disaster recovery by automating snapshot-based replication and recovery plans. While Smart DR can use replication policies, the exhibit specifically shows a replication setup between File Servers with RW/RO configurations, which aligns more directly with a replication mechanism like NearSync. Smart DR is more about the orchestration of recovery, not the replication mechanism itself.

Option B (Metro Availability): Incorrect. Metro Availability provides synchronous replication between two sites with zero Recovery Point Objective (RPO), meaning no data loss. It typically allows RW access on both sites (with one site being primary) and requires low latency between sites (e.g., <5 ms). The exhibit shows RW/RO configurations, indicating asynchronous replication, and does not suggest zero RPO, making Metro Availability an incorrect fit.

Option C (Availability Zones): Incorrect. Availability Zones in Nutanix refer to distributing data across zones within a single cluster or cloud environment for high availability, not replication between two distinct sites. The exhibit clearly shows two separate sites with replication, not a single cluster with zones.

Option D (NearSync): Correct. NearSync is a Nutanix data protection mechanism that provides near-synchronous replication with low RPOs (e.g., 1–15 minutes). It is commonly used for Nutanix Files to replicate shares between sites for disaster recovery. The exhibit’s RW/RO configuration aligns with NearSync, where the Primary Site is RW, and the Remote Site is RO for replicated shares, allowing failover to the Remote Site if needed. The replication policy shown in the exhibit matches NearSync’s behavior of replicating data asynchronously with a configurable RPO.

Why Option D?

NearSync is designed for disaster recovery scenarios where data is replicated between two sites with a low RPO, ensuring minimal data loss. The exhibit’s depiction of replication between FILE SVR1 and FILE SVR2, with RW/RO configurations for shares, is a hallmark of NearSync for Nutanix Files. The presence of a replication policy further supports this, as NearSync uses such policies to define replication schedules and RPOs. Metro Availability (option B) would require synchronous replication with zero RPO, which is not indicated by the RW/RO setup, and the other options (Smart DR, Availability Zones) do not fit the replication scenario shown.

Exact Extract from Nutanix Documentation:

From the Nutanix Files Administration Guide (available on the Nutanix Portal):

“NearSync provides near-synchronous replication for Nutanix Files shares between two sites, enabling disaster recovery with low Recovery Point Objectives (RPOs) ranging from 1 to 15 minutes. Shares on the primary site are typically read-write (RW), while the remote site is read-only (RO) for replicated shares. A replication policy defines the replication schedule and RPO, allowing failover to the remote site in case of a disaster.”

Additional Notes:

The exhibit’s depiction of Share3 (RW on both sites) is a less common configuration but can be achieved with NearSync by allowing specific shares to be writable on both sites for load balancing or specific use cases. However, the overall setup (replication between sites with RW/RO for most shares) aligns with NearSync.

Metro Availability would typically show zero RPO and RW access on both sites for the same shares, which is not the case here.

The error log that the administrator should review to determine why the relay service is down is Cerebro.ERROR. Cerebro is a service that runs on each FSVM and provides relay functionality for Data Lens. Relay service is responsible for collecting metadata and statistics from FSVMs and sending them to Data Lens via HTTPS. If Cerebro.ERROR log shows any errors or exceptions related to relay service, it can indicate that relay service is down or not functioning properly. References: Nutanix Files Administration Guide, page 23; Nutanix Data Lens User Guide