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| Certification Vendor: | Nutanix |
|---|---|
| Exam Name: | Nutanix Certified Professional - Database Automation (NCP-DB) v6.5 |
| Exam Number: | NCP-DB |
| Related Certifications: | Nutanix Certified Associate (NCA) Nutanix Certified Professional - Multicloud Infrastructure (NCP-MCI) |
| Exam Format: | Multiple choice, Scenario-based questions |
| Available Languages: | English |
| Recommended Training: | Nutanix Database Service (NDB) Training |
| Exam Registration: | Nutanix Certification Portal |
| Sample Questions: | Nutanix NCP-DB Sample Questions |
| Exam Way: | Online proctored exam or authorized test center |
| Pre Condition: | Recommended prior experience with Nutanix infrastructure and basic database administration knowledge. NCP-MCI or equivalent knowledge is recommended. |
| Official Syllabus URL: | https://www.nutanix.com/support-services/training-certification |
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NEW QUESTION # 55
When provisioning an PostgreSQL HA Instance, what are the minimum and maximum number of DB server VMs that can be deployed in a cluster?
Answer: B
Explanation:
When provisioning a PostgreSQL HA Instance using NDB, the minimum and maximum number of DB server VMs that can be deployed in a cluster are 2 and 4, respectively. A PostgreSQL HA Instance is a database instance that provides high availability and fault tolerance for PostgreSQL databases using the Patroni framework. Patroni is a Python-based tool that manages PostgreSQL configuration and performs automatic failover and switchover operations. Patroni relies on a distributed consensus store, such as etcd, Consul, or ZooKeeper, to store and synchronize the cluster state and leader information. NDB supports etcd as the consensus store for PostgreSQL HA Instances. NDB allows the administrator to provision PostgreSQL HA Instances with different sizes and configurations, such as small, medium, large, or custom. The size of thePostgreSQL HA Instance determines the number of DB server VMs, the number of etcd nodes, the CPU, memory, and disk resources, and the replication factor of the database. The minimum number of DB server VMs for a PostgreSQL HA Instance is 2, which corresponds to a small size instance. This configuration provides one leader and one follower DB server VM, and one etcd node. The maximum number of DB server VMs for a PostgreSQL HA Instance is 4, which corresponds to a large size instance. This configuration provides one leader and three follower DB server VMs, and three etcd nodes. The other options are not valid for a PostgreSQL HA Instance, as they either do not provide enough redundancy or exceed the supported limit of DB server VMs. References:
* Nutanix Certified Professional - Database Automation (NCP-DB) v6.5, Section 2 - Deploy and Configure an NDB Solution, Objective 2.2: Configure an NDB Instance
* Nutanix Database Management & Automation (NDMA) Course, Module 3: Nutanix Database Service (NDB) Installation and Configuration, Lesson 3.2: Configuring NDB, Topic: Provisioning PostgreSQL HA Instances
* Nutanix Database Service (NDB) User Guide, Chapter 4: Provisioning Databases, Section: Provisioning PostgreSQL HA Instances
* [PostgreSQL High Availability: Under the Hood - Nutanix.dev], Section: PostgreSQL HA Architecture and Components
NEW QUESTION # 56
An administrator needs to restore a source database from a snapshot. The database shares the source volume with multiple other databases.
How does NDB handle this database restore operation?
Answer: C
Explanation:
The correct answer is A because NDB handles the database restore operation by copying the specific database files from the snapshot volume to the source volume, without affecting the other databases that share the same source volume. NDB uses a copy-on-write mechanism to create snapshots and clones, which means that only the changes made to the database files are stored in the snapshot or clone volume, while the original files are kept in the source volume. Therefore, when restoring a source database from a snapshot, NDB only needs to copy the specific database files that have been modified since the snapshot was taken, and overwrite them on the source volume. The other options are not correct because they either cause data loss or unnecessary data transfer. Option B is not correct because replacing the source volume with specific db disks would erase the other databases that share the same source volume, which is not desirable. Option C is not correct because replacing the source volume with the snapshot volume would also erase the other databases that share the same source volume, as well as any changes made to the source database after the snapshot was taken, which is not desirable. Option D is not correct because copying all database files to the source volume wouldbe inefficient and unnecessary, as only the modified files need to be copied, and the other files are already present on the source volume. References: Nutanix Database Management & Automation (NDMA) course, Nutanix Certified Professional - Database Automation (NCP-DB) certification, Nutanix NCP-DB Certification Exam Syllabus and Study Guide, [Nutanix Support & Insights]
NEW QUESTION # 57
An administrator is initially setting up Time Machine for a newly-provisioned database. What is the maximum number of snapshots per day that can be configured in the GUI?
Answer: B
Explanation:
When setting up a Time Machine for a newly-provisioned database in NDB, the GUI allows the administrator to configure the frequency of snapshots for data protection. The maximum number of snapshots per day that can be configured in the NDB GUI is 6. This limit ensures a balance between data granularity (for point-in- time recovery) and storage overhead, preventing excessive resource consumption. The administrator can schedule these snapshots at regular intervals (e.g., every 4 hours) within the Time Machine configuration wizard.
Other options are incorrect based on NDB's design:
* A. 4: This is below the maximum supported limit.
* C. 8: Exceeds the GUI-configurable maximum.
* D. 12: Far exceeds the limit, suggesting manual or unsupported customization.
Thus, the verified answer is B, aligning with NDB's snapshot scheduling constraints.
Official Nutanix Database Automation References
* Nutanix Database Management & Automation (NDMA) course, Module 5: Data Protection and Recovery, Lesson 5.1: Configuring Time Machine.
* Nutanix Certified Professional - Database Automation (NCP-DB) v6.5 Knowledge Objectives, Section
5: Protect Databases Using NDB, Objective 5.1: Configure Time Machine Settings (applicable to v6.
10).
* Nutanix NDB Administration Guide: "Time Machine Snapshot Scheduling" section.
NEW QUESTION # 58
How does NDB send notifications when alerts are generated?
Answer: A
Explanation:
NDB sends notifications when alerts are generated via email. The email notifications can be configured to send to one or more recipients, and can be customized to include the alert severity, category, description, and resolution steps. The email notifications help to inform the database administrator and other stakeholders about the status and issues of the NDB-managed databases and operations.
NDB does not send notifications via SNMP, APIs, or Pulse. SNMP is a protocol for collecting and organizing information about managed devices on a network. APIs are interfaces for communicating and exchanging data between different applications or systems. Pulse is a feature of the Nutanix cluster that collects and sends diagnostic and usage data to Nutanix for analysis and support.
References:
* Nutanix Database Management & Automation Training Course, Module 3: Nutanix Era Deployment,
* Lesson 3.2: Nutanix Era Deployment, slide 11.
* Nutanix Database Management & Automation Training Course, Module 5: Nutanix Era Operations, Lesson 5.1: Nutanix Era Operations, slide 6.
* Nutanix Database Management & Automation Training Course, Module 5: Nutanix Era Operations, Lesson 5.2: Nutanix Era Alerts and Notifications, slides 5-7.
NEW QUESTION # 59
When provisioning a new database, which two options are available for the target? (Choose two.)
Answer: B,C
Explanation:
According to the Nutanix Database Automation (NCP-DB) learning documents, when provisioning a new database, there are two options available for the target12:
* Provision database to an existing registered: This option allows you to provision a database to an existing registered database server. This is useful when you want to add a database to a server that is already being managed by Nutanix Era1.
* Provision databases to a new container: This option allows you to provision a database to a new container. This is useful when you want to create a new isolated environment for your database1.
NEW QUESTION # 60
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