Free Nutanix NCP-EUC Practice Exam with Questions & Answers | Set: 4

the delivery method in use is Citrix MCS. Citrix Machine Creation Services (MCS) is a technology that creates and manages virtual machines from a master image. MCS uses Nutanix storage efficiency features such as deduplication and shadow clones to reduce storage consumption and improve performance. The exhibit shows that the VDI cluster has a high deduplication ratio (7.5x) and a low physical space usage (1.2 TB) compared to the logical space usage (9.1 TB), which indicates that MCS is in use.

Comprehensive and Detailed Explanation From Exact Extract of Nutanix End User Computing documents:

According to the Nutanix AHV Administration Guide and Cluster Expansion prerequisites for environments with non-default virtual switches:

Manual Bridge Configuration: When a cluster has multiple virtual switches (e.g., vs1, vs2) configured, these correspond to specific OVS bridges (e.g., br1, br2) on the AHV hosts. Before adding new nodes to such a cluster, the administrator must manually configure these additional bridges on the new nodes to match the existing cluster configuration.

Consistency Requirement: The documentation states that virtual bridges used for a virtual switch (VS) on all nodes must have the same specification (name, MTU, uplink bond type). If vs1 is mapped to br1 on existing nodes, it must be mapped to br1 on the new nodes before they are added to the cluster.

Expansion Failure/Warning: Failure to configure these bridges prior to expansion can result in the new nodes being unable to join the configured networks properly or the expansion process failing checks related to network uniformity.

Storage Efficiency features that will provide better storage efficiency and performance improvement for a mix of full clones and non-persistent desktops deployed via Citrix MCS on a three-node cluster are Compression and Deduplication. Compression is a technology that reduces the size of data blocks by removing redundant information. Deduplication is a technology that eliminates duplicate blocks of data and reduces storage consumption. Both Compression and Deduplication can be enabled on a per-container basis and can provide significant savings for Citrix virtual desktop deployments that use cloning technologies such as MCS2.

vCenter can execute approximately 640 concurrent operations before incoming requests are queued, and can support up to 2,000 concurrent sessions1. VMware Horizon 8 can support up to 120,000 active sessions in a Cloud Pod Architecture pod federation23. Therefore, if the environment has 10,000 virtual desktops, one vCenter instance might not be enough to handle all the operations and sessions efficiently. The recommended number of vCenter instances in this configuration is B (2).

Nutanix Files VDI Sync is a feature originally designed for active-active use cases where users might access data from either site, requiring bidirectional metadata scanning and locking. This process is resource-intensive.

For a Disaster Recovery (DR) purpose where the secondary site is passive (users only access it if the primary fails), full active-active bidirectional synchronization is unnecessary and wasteful. To reduce the high CPU and RAM utilization caused by the constant metadata comparison between sites, the administrator should configure one-way synchronization (or leverage standard Async DR protection). This ensures data replicates to the DR site without the overhead of checking the DR site for changes to replicate back to the source.

one of the factors that affects end-user performance in a virtual desktop environment is network latency, which is the time it takes for data packets to travel between two points on a network.

Therefore, if the company wants to optimize end-user performance, they should choose a public cloud data center location that minimizes the network latency between the end user and the data center.

In a Nutanix AHV environment integrated with Citrix Provisioning (PVS), the XenDesktop Setup Wizard (or Citrix Virtual Desktops Setup Wizard) is responsible for creating the Write Cache disk for target VMs during the provisioning process.

According to Nutanix Knowledge Base articles regarding PVS on AHV, a common cause for the failure of the write-cache disk creation is the presence of an attached virtual disk on the snapshot used as the template. The wizard expects to create and attach the write-cache disk itself. If the template snapshot already has a hard disk attached (other than the potential CD-ROM, which is generally supported if single), the wizard's logic for disk slot assignment or disk creation conflicts with the existing disk, causing the "creation of the VM's write-cache disk failed" error. The supported procedure explicitly states that the VM template snapshot must be created without any hard disks attached.

For persistent desktop workloads (full clones) where data efficiency is critical, Nutanix recommends leveraging Inline Compression as the primary reduction technology. To further optimize storage capacity without the heavy memory overhead associated with Deduplication, the recommended complementary technology is Erasure Coding (specifically Inline Erasure Coding in newer AOS versions or EC-X post-process).

Erasure Coding increases the effective usable capacity of the cluster by stripping data parity across nodes (similar to RAID 5/6 logic) rather than relying on the default Replication Factor 2 (RAID 1 logic) for cold or write-cold data. Since persistent desktops often contain large amounts of static data after the initial OS and application installation, Erasure Coding significantly reduces the storage footprint. While Capacity Deduplication (Option D) is available, it is generally reserved for specific use cases (like full clone setups with high data commonality) due to its high RAM requirement for fingerprint metadata, making Erasure Coding the more universally applicable "other" technology for general persistent VDI.

Nutanix leverages the Security Configuration Management Automation (SCMA) framework to ensure that services are constantly inspected for variance to the security policy. This framework checks multiple security entities for both Nutanix storage and AHV, automatically reporting log inconsistencies and reverting them to the baseline where applicable.

To prevent these continuous inspections from negatively affecting the cluster's operation, the Nutanix Security Guide specifies that STIG (Security Technical Implementation Guide) scans have the lowest system priority within the virtual storage controller. This design ensures that security checks do not interfere with platform performance or user workloads, regardless of whether the schedule is set to run hourly, daily, weekly, or monthly.

The feature in Nutanix that would be used to complete the task of deploying virtual desktops to a Hyper-V Nutanix cluster with writable differencing disks using a read-only master image with clones that link back to the image is Shadow Clones. Shadow Clones allow for the creation of a snapshot or a clone of a VM that uses the original VM's disks as read-only, and only writes changes to a separate differencing disk. This is useful when deploying virtual desktops as it can reduce storage requirements and improve performance.

Nutanix shadow clones are a feature that enables distributed caching of virtual disks (vDisks) that are in a multi-reader scenario. This can improve performance and reduce network traffic for scenarios such as VDI or private clone boot storms1