Pass the Nutanix Nutanix Certified Professional (NCP) NCP-MCI-6.5 Questions and answers with CertsForce

The best way for the administrator to limit the amount of storage space that data stored in a single container can consume is to set an advertised capacity for the container. This will ensure that the data stored in the container doesn't exceed the set limit, and it will also help prevent any potential performance issues due to resource contention. Additionally, the administrator should consider thick provisioning the container, which will pre-allocate the amount of storage space that can be used by the container. This will help ensure that the data stored in the container doesn't exceed the advertised capacity.

The issue described pertains to the inability to ping the IPMI IPs after moving the IPMI network links to the actual switches with specific VLAN configurations. The two changes that the administrator needs to make are:

A. SSH to AHV and set the VLAN ID using IPMI Tool: Since all VLANs are tagged in the new network configuration, the IPMI network interface needs to be aware of the VLAN it’s supposed to communicate on. This can be achieved by setting the VLAN ID using the IPMI Tool on the AHV.

C. SSH to AHV and change the IP address using IPMI tool: If the IPMI IP addresses were initially set in a different subnet that is not routable in the new network configuration, the administrator would need to change the IPMI IP addresses to match the new network configuration. This can be done by SSHing to the AHV and using the IPMI Tool to change the IP address.

According to section 6 of the exam blueprint guide1, one of the topics covered is VM placement options. When creating a new VM on an AHV cluster, there are two ways to determine its initial placement:

Automatic placement: The Acropolis Dynamic Scheduler (ADS) selects a host that provides adequate resources for the VM’s configuration, such as CPU, memory, disk space, and network bandwidth. ADS also considers factors such as host load, power state, availability domains, and affinity rules.

Manual placement: The administrator can specify a host or a host group where they want to place the VM.

According to the Nutanix Support & Insights website1, you can configure alert emails through Prism Central by enabling or disabling customer email notification for each alert. You can also modify or create custom alert policies for different entities and clusters23.

According to the CPU (%) - VMware Docs web search result2, one of the possible causes of high CPU ready % is over-provisioning vCPUs for a VM or having too many VMs on a host. CPU ready % indicates the percentage of time that the VM was ready, but could not get scheduled to run on the physical CPU. High CPU ready % can lead to VM performance problems, such as slow response time or application latency. To improve VM performance, the administrator should reduce the number of vCPUs assigned to VMs or reduce the number of VMs on the hosts, so that there is less contention for CPU resources.

CloudInit is a package that contains utilities for early initialization of cloud instances. It allows you to customize virtual machines provided by a cloud vendor by modifying the generic OS configuration on boot. You can use CloudInit to set the OS hostname, add custom users, add keys, run custom scripts, and more2. CloudInit is supported by most major Linux and FreeBSD operating systems and works across different cloud platforms3. Sysprep is a tool for Windows operating systems that prepares an installation for cloning, auditing, and customer delivery4.

References: 1: Replacing Nodes in Nutanix Cluster - Nutanix Support & Insights 2: Customize a Linux VM with cloud-init in Azure - Azure Virtual Machines 3: Cloud-Init - The standard for customising cloud instances 4: Sysprep (Generalize) a Windows installation

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.

Nutanix provides two types of granular RBAC for AHV hosts: category based and cluster based3. Category based RBAC allows administrators to assign roles to users or groups based on categories, which are key-value pairs that can be applied to various entities in Prism Central, such as clusters, hosts, VMs, images, and networks. Categories can be used to group entities by different criteria, such as department, project, environment, or location. For example, an administrator can create a category key named Department and assign different values to it, such as Finance, Marketing, or Engineering. Then, the administrator can apply this category to different clusters or hosts and assign roles to users or groups based on this category. This way, users or groups can have different levels of access to different clusters or hosts depending on their department4.

Cluster based RBAC allows administrators to assign roles to users or groups based on specific clusters registered in Prism Central. For example, an administrator can create a role named Cluster Admin and assign it to a user or group for a particular cluster. This way, the user or group can have full access to that cluster and its hosts and VMs, but not to other clusters5.