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According to the Self-Service Blueprint and Task configuration settings, the specific parameter that enables and controls the number of retries for a failed task is theRetry Count.

Retry Count:This integer value determines how many times the system will attempt to re-execute the task if it returns a failure status. If this is set to 0 (default in some views), no retries occur. Setting it to a value of 1 or higher enables the retry logic.

Retry Interval (Option A):This setting defines thewait time(in seconds) between the attempts, but without a positiveRetry Count, the interval is irrelevant.

Timeout (Option B):This defines how long the system waits for a single attempt to complete before marking it as failed.

In Nutanix Self-Service (Calm), Macros are used to reference variables and properties dynamically using the syntax @@{Entity.Attribute}@@.

Servicesare a primary supported entity for macros. You can reference properties of other services within the same application blueprint. For example, a web server service might need the IP address of a database service. This can be achieved using a macro like @@{Database_Service.address}@@. This allows for dynamic orchestration where values are populated at runtime based on the actual deployment details of the Service entity.

To successfully enable and deploy Nutanix Self-Service (formerly Calm), thePrism Centralinstance must have a configuredFully Qualified Domain Name (FQDN).

Requirement:The Self-Service engine (Calm) runs as a set of containerized microservices. These services rely on internal certificates for secure communication and ingress routing.

Validation:During the enablement of the Self-Service feature, Prism Central validates that an FQDN is configured. If only an IP address is used, the enablement process may fail or the services may not function correctly because the certificate generation process requires a valid hostname to establish trust.

Contrast:While Network Segmentation (A) and SNMP (C) are supported features, they are not mandatory prerequisites for the basic deployment of the Self-Service engine.

To automate a remediation action (like restarting a VM) based on a specific performance threshold (like CPU usage > 90%), the administrator must useIntelligent Operations (X-Play)with an event-driven trigger.

Alert-Based Trigger:The administrator first ensures there is an Alert Policy in Prism Central for "VM High CPU" configured with a threshold of 90%.

Playbook Configuration:The administrator then creates a Playbook and selects theAlerttrigger (orAlerts Matching Criteriatrigger). They link this trigger to the specific CPU alert policy.

Action:The administrator adds theVM Reboot(or Power Cycle) action to the Playbook.

Result:As soon as the system detects the CPU exceeding 90%, the Alert fires, which immediately triggers the Playbook to reboot the VM without human intervention.

Options A (Scheduled) and C (Manual) do not meet the requirement of "whenever it exceeds," which implies real-time reaction. Option B is incorrect because Project Quotas manage resource allocation limits, not runtime performance monitoring or remediation.

Comprehensive and Detailed Explanation

Nutanix Calm naming macros:

@@{calm_random}@@→ Generates a random short string,not guaranteed uniqueacross deployments.

@@{calm_unique}@@→ Generates a unique, monotonically increasing integerguaranteed not to repeat.

Static values (e.g., WNSRV0001) will always collide.

Calm documentation specifies:

calm_uniqueshould be used when a deterministic, guaranteed unique VM name is required across multiple deployments.

Therefore, the correct VM naming pattern is:

✔WNSRV@@{calm_unique}@@

Nutanix Intelligent Operations (X-Play) allows administrators to create custom automation playbooks by defining triggers and associated actions. The system provides a library of pre-built actions to simplify integration.

To integrate notifications with standard collaboration platforms, the administrator should select theActionspecific to that platform. For example, theSlackandMicrosoft Teamsactions are natively available in the Action Gallery.

Slack Action:Requires entering a Slack Token and Channel Name.

Microsoft Teams Action:Requires entering a Webhook URL from the Teams instance.

Using these pre-built actions is the direct and recommended method for supported platforms, as opposed to configuring a generic Webhook manually (Option D) or modifying global settings (Option B).

Comprehensive and Detailed Explanation

Blueprint tasks in Calm run at specificlifecycle stages:

Pre-create→ Tasks executedbeforeVM creation

Post-create→ Tasks executedafterVM creation butbefore power-on

Pre-delete→ Tasks executed before VM deletion

Post-delete→ Tasks executed after removal

Nutanix documentation states:

Actions that must occurbetween VM provisioning and first power-onshould be added to thePre-createorPost-createstage depending on their dependency.

AD OU assignment requires the VM to exist in inventory butbefore power-on, which aligns with:

✔Pre-create– This is used to configure environment-specific metadata, directory placement, and provisioning adjustmentsprior to initial VM startup.

Correct answer:B

Nutanix Self-Service defines several user roles, each with specific permissions.

Documentation describes theConsumerrole as:

Allowed todeploy applications from the Marketplace or assigned blueprints

Allowed to performday-2 operations(power actions, snapshots, etc.)

Restricted from modifying blueprints, environments, or project configurations

Ideal for end users who need access to deploy and manage their workloadswithout administrator capabilities

This matches exactly what the DevOps team requires.

Why the other roles are incorrect

Developer (A):Can modify blueprints and environments — too much privilege.

Project Admin (C):Full control over project resources — far more access than needed.

Operator (D):Used for automation and operational oversight, not end-user VM deployment.

Thus,Consumer (B)is the correct and intended role.

In Self-Service, anOperatorrole can:

Create blueprints

Modify blueprints

Add tasks (shell, PowerShell, script, package installs, etc.)

Use project-provided resources (images, networks, credentials)

To deploy a Linux VM with NGINX:

Asingle-VM blueprintis sufficient.

Developer must selectLinux substrate.

Installation of NGINX occurs througha shell taskin the blueprint’s package or service.

No additional permissions are required for an Operator to perform these actions.

Therefore, the correct answer isC.

Comprehensive and Detailed Explanation

Self-Service supports provisioning into:

AWS

Azure

GCP

VMware

Nutanix AHV

To deploy into external clouds, Calm requires:

AProvider Account(credentials + API endpoints + permissions)

Assigned to theProject

Without a Provider Account, the Project cannot access cloud infrastructure and provisioning fails.

Documentation is explicit:

A Projectmusthave at least one Provider Account to enable cloud provisioning.

Thus the correct answer isD.