NCP-DB FREE PRACTICE & NCP-DB STUDY DEMO

NCP-DB Free Practice & NCP-DB Study Demo

NCP-DB Free Practice & NCP-DB Study Demo

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Nutanix NCP-DB Exam Syllabus Topics:

TopicDetails
Topic 1
  • Describe NDB Concepts: It defines database and NDB terminology. The topic also explains benefits and features of NDB.
Topic 2
  • Deploy and Configure an NDB Solution: This topic discusses how to deploy, configure, and NDB Instance.
Topic 3
  • Protect NDB-managed Databases Using Time Machine: SLA retention policies, source databases, clones, protection of databases, and Data Access Management (DAM) policies are discussed in this topic.
Topic 4
  • Operate and Maintain an NDB Environment: Application of procedural concepts to register database server, provision databases, and test and publish database patches. Additionally, the topic explains the right method to apply Linux OS patches. Lastly, it delves into databases and troubleshooting of NDB operations.

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Nutanix Certified Professional - Database Automation (NCP-DB) v6.5 Sample Questions (Q60-Q65):

NEW QUESTION # 60
What does an NDB compute profile contain?

  • A. VLAN that the new database server VM will use.
  • B. Windows domain name (FQDN), domain user, and password.
  • C. vCPUs, cores per vCPU, and the amount of memory for the database server VM.
  • D. An image of the database and operating system generated from the registered database server VM.

Answer: C

Explanation:
An NDB compute profile defines the CPU and memory resources for the database server VMs that are provisioned using NDB. It does not include any information about the network, domain, or software of the database server VMs. Those are specified in separate profiles, such as network profile, domain profile, and software profile.
References: Nutanix Support & Insights, section "NDB Compute"


NEW QUESTION # 61
In an Oracle upgrade scenario using Era. if the source database is on a nor-Nutanix platform, is it possible to upgrade it with an Era workflow?

  • A. Yes, only if the nori-Nutanix platform is little-endian platform.
  • B. Yes, it is possible to upgrade database instance on a non-Nutanix platform.
  • C. No, the database instaru:e must be Era managed to Be upgraded
  • D. Yes, only if the nan-Nutanix platform is big-endian platform,

Answer: C

Explanation:
According to the Nutanix Database Automation (NCP-DB) learning documents, Nutanix Era is a database management tool that automates and simplifies database operations, including provisioning, patching, upgrading, and more1. However, for a database to be managed by Era, it must be registered with Era1. This means that if a database is on a non-Nutanix platform, it cannot be directly upgraded using an Era workflow. It must first be migrated to a Nutanix platform and registered with Era before it can be managed and upgraded using Era1.


NEW QUESTION # 62
A quality assurance team noticed a significant change between a cloned database they are currently using versus the one used one week ago. They created an SQL script to verify the differences.
Which task should be performed by an NDB administrator to provide the correct database to the QA team?

  • A. Replicate a selected snapshot.
  • B. Create a clone database from a snapshot.
  • C. Perform a Log Catch Up operation.
  • D. Clone database selecting Point in Time data.

Answer: D

Explanation:
When a quality assurance (QA) team notices a significant change between a cloned database currently in use and one used a week ago, and they have an SQL script to verify differences, the NDB administrator needs to provide a clone reflecting the database state from a week ago. The task "Clone database selecting Point in Time data" allows the administrator to select a specific point-in-time snapshot (e.g., from a week ago) using the Time Machine feature. This creates a new clone with the exact data state at that time, enabling the QA team to compare it with the current clone.
* Option A (Replicate a selected snapshot) is incorrect because replication is for HA, not creating a usable clone for QA.
* Option B (Create a clone database from a snapshot) is incorrect because it does not specify point-in- time selection, limiting flexibility to the latest snapshot.
* Option C (Clone database selecting Point in Time data) is correct as it allows precise selection of the week-old data state.
* Option D (Perform a Log Catch Up operation) is incorrect because Log Catch Up applies recent logs, not reverting to a past state.
This approach meets the QA team's need for historical data comparison.
References
* Nutanix Database Service (NDB) User Guide, Chapter 5: Configuring Time Machines, Section:
Cloning with Point-in-Time Data
* Nutanix Certified Professional - Database Automation (NCP-DB) v6.5 Blueprint, Section 5: Protect Databases Using Time Machine


NEW QUESTION # 63
An administrator needs to provision a PostgreSQL cluster instance with an external Load Balancer. Which software can be omitted on the Reference VM while creating the Software Profile?

  • A. etcd
  • B. Patron
  • C. HAProxy
  • D. keepalived

Answer: C

Explanation:
When provisioning a PostgreSQL cluster instance with an external load balancer in NDB, the administrator creates a software profile from a reference VM. The reference VM typically includes software like Patroni (for HA management), HAProxy (for internal load balancing), keepalived (for high availability IP management), and etcd (for distributed configuration). Since an external load balancer is used, the internal HAProxy can be omitted from the reference VM. NDB will rely on the external load balancer to distribute traffic, eliminating the need for HAProxy in the software profile, while the other components remain essential for cluster management.
* Option A (Patroni) is incorrect because Patroni is required for PostgreSQL HA management.
* Option B (HAProxy) is correct as it can be omitted when an external load balancer is configured.
* Option C (keepalived) is incorrect because keepalived is needed for HA IP failover.
* Option D (etcd) is incorrect because etcd is necessary for distributed configuration in the cluster.
This adjustment streamlines the profile for external load balancer use.
References
* Nutanix Database Service (NDB) User Guide, Chapter 4: Managing Software Profiles, Section:
Creating Software Profiles for HA Instances
* Nutanix Certified Professional - Database Automation (NCP-DB) v6.5 Blueprint, Section 4: Manage Database Software Profiles


NEW QUESTION # 64
An administrator needs to perform patching on a MongoDB server cluster within an NDB environment.
How should the administrator accomplish this task?

  • A. Disable the replica set while patching.
  • B. Perform a rolling upgrade, applying the patch to the primary member first, followed by the secondary members.
  • C. Perform a rolling upgrade, applying the patch to the secondary members first, followed by the primary member.
  • D. Apply the patch to all nodes at once.

Answer: C

Explanation:
The administrator should perform a rolling upgrade, applying the patch to the secondary members first, followed by the primary member, to accomplish the task of patching a MongoDB server cluster within an NDB environment. A rolling upgrade is a method of applying patches or updates to a cluster without downtime or interruption of service. The administrator can use the NDB patching feature to perform a rolling upgrade on a MongoDB server cluster, which consists of a primary member and one or more secondary members that form a replica set. The NDB patching feature allows the administrator to select the software profile version, the database parameters profile, and the network profile for the patching operation. The NDB patching feature also automates the steps of the rolling upgrade, such as:
* Step 1: The administrator initiates the patching operation on the NDB instance, and selects the MongoDB server cluster to be patched.
* Step 2: The NDB instance verifies the prerequisites and compatibility of the patching operation, and creates a pre-patch snapshot of the MongoDB server cluster.
* Step 3: The NDB instance applies the patch to the first secondary member of the MongoDB server cluster, and waits for the patching to complete successfully.
* Step 4: The NDB instance verifies the status and functionality of the patched secondary member, and repeats the patching process for the remaining secondary members of the MongoDB server cluster, one at a time.
* Step 5: The NDB instance performs a failover of the primary member to one of the patched secondary members, and applies the patch to the original primary member.
* Step 6: The NDB instance verifies the status and functionality of the patched primary member, and performs a failback of the primary member to the original primary member, if desired.
* Step 7: The NDB instance creates a post-patch snapshot of the MongoDB server cluster, and completes the patching operation.
Performing a rolling upgrade, applying the patch to the secondary members first, followed by the primary member, is the recommended and best practice method of patching a MongoDB server cluster within an NDB environment, as it ensures the high availability, consistency, and performance of the MongoDB server cluster and the databases.
Performing a rolling upgrade, applying the patch to the primary member first, followed by the secondary members, is not a valid or feasible method of patching a MongoDB server cluster within an NDB environment, as it would cause downtime, data loss, and inconsistency of the MongoDB server cluster and the databases. Applying the patch to the primary member first would disrupt the replication and synchronization of the MongoDB server cluster, and would require manual intervention and recovery steps to restore the MongoDB server cluster to a functional state.
Applying the patch to all nodes at once is not a valid or feasible method of patching a MongoDB server cluster within an NDB environment, as it would cause downtime, data loss, and inconsistency of the MongoDB server cluster and the databases. Applying the patch to all nodes at once would require shutting down the entire MongoDB server cluster, and would expose the MongoDB server cluster and the databases to potential errors, failures, and corruption during the patching process.
Disabling the replica set while patching is not a valid or feasible method of patching a MongoDB server cluster within an NDB environment, as it would cause downtime, data loss, and inconsistency of the MongoDB server cluster and the databases. Disabling the replica set while patching would break the replication and synchronization of the MongoDB server cluster, and would require manual intervention and recovery steps to re-enable the replica set and restore the MongoDB server cluster to a functional state.
References:
* Nutanix Database Management & Automation Training Course, Module 5: Nutanix Era Operations, Lesson 5.1: Nutanix Era Operations, slides 11-12, 15-16.
* Nutanix Database Management & Automation Training Course, Module 5: Nutanix Era Operations, Lesson 5.3: Nutanix Era Patching, slides 5-9.
* Nutanix Database Management & Automation Training Course, Module 5: Nutanix Era Operations, Lesson 5.4: Nutanix Era Patching Lab, slides 5-10.
* Nutanix Database Management & Automation Training Course, Module 7: Nutanix Era Troubleshooting, Lesson 7.1: Nutanix Era Troubleshooting, slide 6.


NEW QUESTION # 65
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