Home / Nutanix / NCP-DB-6.5

Question list

List of questions

Question 1

(0)

An administrator is trying to register a database server VM with NDB. Which file types will prevent the registration from being successful if located in the C:\ drive?

Question 2

(0)

Which statement is true regarding the NDB alert retention feature?

Question 3

(0)

A request is received to refresh a database clone from a new manual snapshot. When the administrator attempts to create the new snapshot from the Time Machine, it is in a Frozen state. What causes

Question 4

(0)

Which disk is omitted from a Software Profile?

Question 5

(0)

Which response shows two ways to upgrade an NDB Server?

Question 6

(0)

What is purpose of the NDB Database Agent service?

Question 7

(0)

An administrator needs to provide the least-privilege access to a newly-hired engineer whose task is to add new VLANs or IP Pools in NDB. Which role should the administrator select to complete this

Question 8

(0)

How can an administrator exclude Kernel patches for the Linux OS using the most efficient means?

Question 9

(0)

Within NDB, an administrator needs to register a PostgreSQL database server VM with a database. Where should the database data and log files be located in order to successfully complete this task?

Question 10

(0)

What is causing this issue?

Question 71 - NCP-DB-6.5 discussion

When provisioning an PostgreSQL HA Instance, what are the minimum and maximum number of DB server VMs that can be deployed in a cluster?

Min 2, Max 6

Min 2, Max 4

Min 1. Max 3

Min 3, Max 5

Suggested 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 the PostgreSQL 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.Reference:

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

Show Answer

asked 23/09/2024

xingrui li

36 questions

Your answer: A B C D

0 comments

Sorted by