Nutanix Updated NCP-MCA Exam Questions and Answers by izaiah

To enable Calm, the administrator needs to log on to Prism Central with a local ADMIN account and click Services -> Calm -> Enable. This will install the Calm service on Prism Central and allow the administrator to access the Calm UI and features. The other options are incorrect because they either refer to Prism Element, which is not the correct platform for Calm, or they involve unnecessary or incorrect steps. References: [Enabling and Accessing Calm | Nutanix Community] (https://next.nutanix.com/installation-configuration-23/enabling-and-accessing-calm-40191); [Nutanix Certified Professional - Multicloud Automation (NCP-MCA) Exam Blueprint Guide] (https://www.nutanix.com/content/dam/nutanix/resources/support/ds-ncp-mca.pdf), section 2.1.

The Playbook is designed to manually reduce the vCPU count on any selected VM within the environment. However, it failed during a test run on VM2 because there was a running snapshot of the VM. According to Nutanix Multicloud Automation (NCP-MCA) principles, you cannot reduce the vCPU count on a VM that has an active snapshot1. This is because the snapshot captures the state of the VM configuration and data, and reverting to a snapshot will restore both the guest OS and the virtual hardware2. Therefore, changing the vCPU count while a snapshot is running will cause inconsistency and error. The other options are incorrect because:

A. The Playbook can be executed against a VM on AHV, as long as there is no snapshot running3.

B. The VM does not need to be powered off before vCPU can be reduced, as this can be done using hot-plug CPU feature4.

D. The play will not cause the VM to go below the minimum vCPU, as the minimum number of vCPUs is set to 1 in the Playbook, and the VM has 4 vCPUs initially. References: Nutanix Support & Insights, Solved: Snapshot query !! - VMware Technology Network VMTN, Calm on ESXi Deployment | Nutanix Community, Virtual CPU Configuration and Limitations - VMware Docs

Calm integrates natively with AWS and AHV as providers. A provider is a cloud platform or infrastructure that hosts the application VMs or services. Calm supports various providers such as Nutanix, AWS, Azure, GCP, VMware, and Kubernetes. AWS and AHV are two of the most commonly used providers in Calm, as they offer scalability, flexibility, and cost-efficiency for deploying applications. References: Nutanix Certified Professional - Multicloud Automation (NCP-MCA) Exam Blueprint Guide, page 11; Nutanix Calm User Guide, section 3.1.

The error message “Authentication by failed” typically indicates an issue with the authentication credentials being used. Since the administrator is using SSH key-based credential to authenticate, it’s essential to ensure that the private key associated with this credential is correct and accessible. If there’s an issue with the private key, such as it being incorrect or inaccessible, authentication will fail. Increasing the retries or modifying the timeout will not help if the credential is invalid. Changing to password authentication credential may work, but it’s not the best option as it may compromise security and require additional configuration. References:

Nutanix Certified Professional - Multicloud Automation (NCP-MCA) v6.5, Section 3 - Validate Blueprints, Runbooks, Playbooks, and Automation Settings, page 2

Nutanix Multicloud Automation Administration (NMCAA), Module 5 - X-Play, Lesson 5.2 - Credential Management, page 7

Nutanix Calm User Guide, Credential Management, SSH Key-Based Authentication