Nutanix NCP-MCI-6.5 Practice Test - Questions Answers, Page 14

According to the web search results, Distributed Storage Fabric (DSF) is the scale-out storage technology that makes HCI and cloud possible45.DSF pools the storage devices that are directly attached to a cluster of servers and presents them to applications across a variety of storage protocols4.DSF also manages and protects data by a fine-grained, distributed metadata system that ensures uniform distribution of data throughout the cluster to eliminate hot spots and speed up rebuilds

According to the web search results, a consistency group is a group of related applications or services that must be recovered together in order to work properly, and this means more than being recovered at the same time67.They also typically need to be recovered to the same point in time6.Therefore, to meet the requirement of protecting all VMs of a multi-tier application at the same time, the administrator must create a consistency group for the application and place all VMs in it8.This way, the administrator can apply data protection policies and schedules to the entire consistency group as a single unit8.

These are the three steps that the administrator must take to increase throughput to the host. According to the network diagram, the host has two 10Gb interfaces and two 1Gb interfaces in the default bond, but only one of the 10Gb interfaces is connected to a switch. The other 10Gb interface is disconnected and has a red ''X'' on it. The two 1Gb interfaces are also disconnected and have dotted lines. This means that the host is using only one 10Gb interface for all its network traffic, which limits its maximum bandwidth to 10 Gbps.

To increase the throughput, the administrator should connect both 10Gb interfaces to the physical switch, preferably to different switches for redundancy and high availability. This will allow the host to use both 10Gb interfaces for network traffic, which can increase its maximum bandwidth to 20 Gbps.However, this also requires changing the bond mode from active-backup to balance-slb or balance-tcp, which are load balancing modes that distribute network traffic across multiple interfaces based on source MAC address or TCP session1.The default bond mode of active-backup only uses one interface at a time and switches to another interface only when the active one fails2.

Finally, the administrator should remove any 1Gb interfaces still connected from the default bond, as they are not needed and may cause performance issues or conflicts with the load balancing modes.The 1Gb interfaces can be used for other purposes, such as management or backup networks, by creating separate bonds or bridges for them3. Alternatively, they can be left disconnected if they are not required.

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Administrators can use Acropolis with IPAM to deliver a complete virtualization deployment, including network management, from the unified Prism interface. This capability radically simplifies the traditionally complex network management associated with provisioning VMs and assigning network addresses. To avoid address overlap, be sure to work with your network team to reserve a range of addresses for VMs before enabling the IPAM feature.

The Acropolis master assigns an IP address from the address pool when creating a managed VM NIC; the address releases back to the pool when the VM NIC or VM is deleted.

According to the Nutanix Prism Central Guide, role-based access control (RBAC) in Prism Central allows you to create custom roles and assign them to users or groups based on the categories of the entities they need to manage1. Categories are key-value pairs that you can assign to entities such as VMs, hosts, clusters, images, etc.to group them logically2. For example, you can create a category key called ''OS'' and assign values such as ''Linux'' or ''Windows'' to different VMs based on their operating system.

In the exhibit, the Linux Admin role has been created with the following settings:

The role has the ''VM Admin'' permission, which allows the user to perform all actions on VMs3.

The role has been assigned to the admin1 user.

The role has been scoped to the entities that have the category key ''OS'' and the value ''Linux''.

However, the admin1 user does not have access to all Linux VMs in the environment. This means that some of the Linux VMs do not have the proper category assigned to them. To grant the proper access, the administrator should add the category key ''OS'' and the value ''Linux'' to each Linux VM that needs to be managed by the Linux Admin role.This can be done either individually or in bulk through Prism Central4. Once the categories are added, the admin1 user will be able to see and manage all Linux VMs in the environment.

NGT is a software package that enables advanced VM management features provided by Nutanix, such as file-level restore, VM mobility, and application-consistent snapshots12.To use NGT, you need to enable the NGT feature for a VM in the Prism Element web console, mount the NGT installer (ISO disk file) in the VM, and install NGT in the VM1.However, before installing NGT, you need to ensure that the VM can communicate with the NGT-Controller VM service, which runs on the Controller VM (CVM) of each Nutanix node3.The NGT-Controller VM service listens on port 9943 for incoming requests from the guest VMs3. Therefore, you need to enable port 9943 on the ESXi-hosted VM to allow communication with the NGT-Controller VM service.

Terminology

Availability Zone--it is represented by all resources (Nutanix Clusters) connected to Prism Central or Xi Leap Availability zone. Depends on the architecture, Availability zone can represent geographic territory, datacenter or server room in thedatacenter.Protection policies--in protection policies you set up (RPO, Retention), rules to auto-apply policies to virtual machines

https://vmwaremine.com/2019/02/08/nutanix-leap-runbooks-part-1/#sthash.VwrzSzhQ.dpbs

According to the web search results, the cluster redundancy factor (RF) determines how many copies of the cluster metadata and configuration data are stored on different nodes. By default, the cluster RF is 2, which means that there are three copies of the Zookeeper and Cassandra data on the cluster.If the cluster RF is increased to 3, then there will be five copies of the Zookeeper and Cassandra data on the cluster12.This means that the Zookeeper component can tolerate two failures, as it can still operate with a quorum of three nodes out of five3.

However, the container replication factor (RF) determines how many copies of the VM data and oplog are stored on different nodes. The container RF can be set independently for each container, and it can be different from the cluster RF.For example, a container can have RF 2 even if the cluster has RF 34. In this case, the container will only have two copies of the VM data and oplog on the cluster, regardless of the cluster RF.This means that the Extent Groups component can only tolerate one failure, as it needs at least one copy of the VM data and oplog to be available5.

Therefore, if the administrator increases the cluster RF to 3, but does not modify the containers, then the new values in the data resiliency dashboard will be Zookeeper = 2 and Extent Groups = 1.

Prism Central is a multi-cluster manager that provides a single, centralized management interface for Nutanix environments1. Prism Central can be deployed in different configuration scenarios, depending on the network and security requirements of the environment. Some of the valid scenarios are:

Environments use Network Address Translation (NAT): NAT is a method of mapping one IP address space to another by modifying network address information in IP datagram packet headers while they are in transit across a traffic routing device2.NAT can be used to enable communication between Prism Central and Prism Elements that are in different networks or subnets3.For example, Prism Central can be deployed in a public cloud and use NAT to access Prism Elements that are in a private data center3.

Prism Elements and Prism Central are in different subnets: A subnet is a logical subdivision of an IP network that allows multiple networks to share a single physical network4.Prism Elements and Prism Central can be in different subnets as long as they can communicate with each other through routing or NAT3.For example, Prism Central can be deployed in a management subnet and access Prism Elements that are in different application subnets3.

Environments do not have Internet access: Internet access is not required for the deployment of Prism Central, as long as the environment meets the prerequisites and considerations for installing or upgrading Prism Central. For example, Prism Central can be deployed in a dark site, which is an environment that does not have Internet access or has restricted Internet access. In this case, the administrator needs to manually enable microservices infrastructure and download the required software packages from another source.