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NCP-DB Zertifizierungsfragen, Nutanix NCP-DB PrüfungFragen

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Nutanix NCP-DB Prüfungsplan:

Thema
Einzelheiten

Thema 1

• Deploy and Configure an NDB Solution: This topic discusses how to deploy, configure, and NDB Instance.

Thema 2

• Administer an NDB Environment: While focusing on the administration of an NDB environment, this topic focuses on managing NDB profiles, applying procedural concepts, and managing networks in NDB. Lastly, the topic explains sub-topics of managing access controls in NDB and identifying how to use NDB APIs and CLI.

Thema 3

• Describe NDB Concepts: It defines database and NDB terminology. The topic also explains benefits and features of NDB.

 

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Nutanix Certified Professional - Database Automation (NCP-DB) v6.5 NCP-DB Prüfungsfragen mit Lösungen (Q192-Q197):

192. Frage
A Linux OS is running a PostgreSQL instance that is managed by NDB. This instance is not working properly after a manual OS update, so an administrator has prepared a new Linux DB server VM that is ready to host the data from the broken DB.
Which action should the administrator perform to migrate data to the new DB server VM?

• A. Follow the Provision a PostgreSQL Instance wizard.
• B. Provision a new PostgreSQL instance from the Databases page.
• C. Register the new DB Server VM in NDB.
• D. From The Machine policy, Authorize Database Sever VMs.

Antwort: C

Begründung:
In this scenario, a PostgreSQL instance managed by NDB on a Linux VM is malfunctioning after a manual OS update, and a new Linux DB server VM has been prepared to host the data. To migrate the data to the new VM, the administrator must integrate the new VM into NDB's management framework. The correct action is to register the new DB Server VM in NDB, which allows NDB to recognize and manage the VM as a database server. Once registered, the administrator can use NDB's features (e.g., cloning, restoring, or reprovisioning) to migrate the data from the broken instance to the new VM.
Here's why the other options are incorrect:
* A. Provision a new PostgreSQL instance from the Databases page: This creates a fresh instance without migrating existing data, losing the broken instance's data unless separately restored.
* B. From The Machine policy, Authorize Database Server VMs: Machine policies in NDB define rules for VM management, but authorizing VMs is not a direct migration action and assumes prior registration.
* C. Follow the Provision a PostgreSQL Instance wizard: Similar to A, this provisions a new instance rather than migrating data to an existing prepared VM.
Registering the new VM in NDB (via the "Database Server VMs" section) enables the administrator to associate it with the existing PostgreSQL instance's configuration and perform a data migration (e.g., using a snapshot or backup). This aligns with NDB's workflow for replacing a broken server. Thus, the verified answer is D.
Official Nutanix Database Automation References
* Nutanix Database Management & Automation (NDMA) course, Module 3: Managing Database Instances, Lesson 3.3: Registering and Managing Database Server VMs.
* Nutanix Certified Professional - Database Automation (NCP-DB) v6.5 Knowledge Objectives, Section
3: Manage NDB Solutions, Objective 3.2: Register and Manage DB Server VMs (applicable to v6.10).
* Nutanix NDB Administration Guide: "Registering a Database Server VM" section.

 

193. Frage
An administrator has been asked to patch several Nutanix database server VMs. Prior to patching, what should the administrator configure?

• A. Active Directory Access
• B. pulse
• C. An SMTP Server
• D. A Repository

Antwort: D

Begründung:
Before patching several Nutanix database server VMs using the "Patch OS now" feature in NDB, the administrator must configure a Repository. A repository (e.g., a custom patch repository or Nutanix-provided source) contains the OS updates or patches (e.g., for Windows or Red Hat-based systems). NDB requires this repository to be specified to fetch and apply the patches, ensuring the database VMs are updated from a validated source.
Other options are unrelated to patching:
* B. Active Directory Access: Used for authentication, not patching.
* C. pulse: Refers to Nutanix Pulse for support, not patch configuration.
* D. An SMTP Server: Configured for alerts, not patching.
Thus, the verified answer is A, reflecting the patching prerequisite.
Official Nutanix Database Automation References
* Nutanix Database Management & Automation (NDMA) course, Module 6: Maintenance and Patching, Lesson 6.3: Creating Maintenance Plans.
* Nutanix Certified Professional - Database Automation (NCP-DB) v6.5 Knowledge Objectives, Section
6: Optimize NDB Solutions, Objective 6.3: Manage Maintenance Plans (applicable to v6.10).
* Nutanix NDB Administration Guide: "Configuring Patch Repositories" section.

 

194. Frage
An Era-managed production MSSQL database crashed during a busy holiday weekend and the administrator has to restore the database to the most recent timestamp with an objective to reduce the restore time and minimize data loss.
What option should the administrator do to achieve this objective?

• A. Perform Restore Source Database by selecting most recent and include Tail log Backup
• B. Perform Restore Source Database by selecting the available snapshot.
• C. Perform Restore Source Database by selecting Restore time just before the database crash.
• D. Perform Restore Source Database by selecting the current time.

Antwort: A

Begründung:
Nutanix Era is a database management solution that automates and simplifies database administration tasks such as provisioning, patching, cloning, and backup. In the event of a database crash, the most effective way to minimize data loss and reduce restore time is to perform a restore of the source database by selecting the most recent point in time and including the Tail log Backup12.
The Tail log Backup includes all the transactions that have occurred since the last transaction log backup, which helps to minimize data loss. By selecting the most recent point in time for the restore, the administrator ensures that the database is restored to the state it was in just before the crash, thereby reducing the amount of data that needs to be reprocessed or reentered12. This approach aligns with the Nutanix Era's capabilities and best practices for database recovery12.

 

195. Frage
While restoring a PostgreSQL HA instance, an administrator notices that the restore of a standby node has failed. The primary node is ready to seive application traffic.
In what state does NDB leave the database?

• A. PAKFIAL.READY
• B. ONLINE
• C. OFFLINE
• D. RECOVERY PENDING

Antwort: B

Begründung:
When restoring a PostgreSQL HA instance in NDB, if the standby node fails to restore but the primary node is successfully restored and ready to serve application traffic, NDB considers the database operational from the perspective of the primary node. In this scenario, NDB leaves the database in an "ONLINE" state, reflecting that the primary node is functional and capable of handling requests, even though the HA configuration is not fully intact due to the standby failure. The administrator would need to address the standby node separately (e.g., by re-provisioning or troubleshooting), but the database's state is determined by the primary node's readiness.
* Option A (PAKFIAL.READY) appears to be a typo and is not a valid NDB state.
* Option B (OFFLINE) is incorrect because the primary node is operational, so the database is not offline.
* Option C (ONLINE) is correct as it reflects the primary node's ability to serve traffic.
* Option D (RECOVERY PENDING) is incorrect because the primary node has completed recovery and is active, not pending.
This behavior aligns with NDB's focus on maintaining service availability where possible.
References
* Nutanix Database Service (NDB) User Guide, Chapter 5: Configuring Time Machines, Section:
Restoring HA Instances
* Nutanix Support & Insights, Knowledge Base Article: "Handling Partial Restore Failures in PostgreSQL HA"
* Nutanix Certified Professional - Database Automation (NCP-DB) v6.5 Blueprint, Section 5: Protect Databases Using Time Machine

 

196. Frage
A database administrator wants to be notified in advance before any database clones are removed using a removal schedule What is the best way to configure this notification?

• A. Create a Playbook to create an alert based on the removal event.
• B. Build a custom report in Prism to report on these events.
• C. Select the Create an Alert Before Removal option.
• D. Configure SMTP alerts for all actions in NDB.

Antwort: C

Begründung:
A database administrator wanting to be notified in advance before any database clones are removed using a removal schedule can configure this directly within the NDB interface. The "Update Removal Schedule" feature includes an option labeled "Create an Alert Before Removal," which is pre-selected as non-optional by default but can be customized. Selecting this option generates an alert (e.g., via email or the NDB dashboard) prior to the scheduled clone removal, allowing the administrator to take action if needed. This is the most efficient and built-in method, avoiding the complexity of custom scripts or reports.
* Option A (Create a Playbook to create an alert based on the removal event) is incorrect because a Playbook is an advanced automation tool, not the simplest solution for this notification need.
* Option B (Select the Create an Alert Before Removal option) is correct as it is a native NDB feature designed for this purpose.
* Option C (Build a custom report in Prism to report on these events) is incorrect because Prism reports are for historical analysis, not real-time notifications.
* Option D (Configure SMTP alerts for all actions in NDB) is incorrect because configuring SMTP for all actions is overly broad and less targeted than the specific alert option.
This ensures timely notifications with minimal configuration.
References
* Nutanix Database Service (NDB) User Guide, Chapter 5: Configuring Time Machines, Section:
Managing Clone Removal Schedules
* Nutanix Certified Professional - Database Automation (NCP-DB) v6.5 Blueprint, Section 5: Protect Databases Using Time Machine

 

197. Frage
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