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NEW QUESTION # 130
An administrator has opened the Enable Multi-Cluster configuration for an NDB instance, but the wizard does not present the VLAN, as shown in the exhibit.
Which configuration allows to choose a VLAN in the drop-down box?
Answer: D
Explanation:
The provided exhibit shows the "Enable Multi-Cluster" configuration wizard in NDB, where the VLAN dropdown is empty with a "Nothing found" message, indicating that no VLANs are available for selection.
This issue arises because NDB requires a network profile to be created before provisioning the NDB Agent VM and enabling multi-cluster support. A network profile defines the static VLANs managed by NDB, which are essential for network configuration during multi-cluster setup. The warning in the exhibit ("An NDB managed static vLAN is required to provision the NDB Agent VM. Add an NDB managed static vLAN using the Networks page to continue.") reinforces that the administrator must create a network profile via the Networks page to populate the VLAN dropdown.
* Option A (A network profile must be created first) is correct as it addresses the root cause by ensuring VLANs are defined in a network profile.
* Option B (Verify if subnet leverages advanced network control) is incorrect because advanced network control is not a prerequisite for VLAN selection in this context.
* Option C (IP address pool must be managed in NDB) is incorrect because IP address pools are managed separately and not required for VLAN selection at this stage.
* Option D (VLAN subnet must use IP address management) is incorrect because IP address management is not a direct requirement for enabling VLAN selection in the wizard.
After creating the network profile, the administrator can proceed with the multi-cluster enablement.
References
* Nutanix Database Service (NDB) User Guide, Chapter 3: Configuring an NDB Environment, Section:
Configuring Network Profiles for Multi-Cluster
* Nutanix Support & Insights, Knowledge Base Article: "Troubleshooting VLAN Issues in NDB Multi- Cluster Setup"
* Nutanix Certified Professional - Database Automation (NCP-DB) v6.5 Blueprint, Section 3: Configure an NDB Environment
NEW QUESTION # 131
An administrator is attempting to enable high availability (HA) for NDB across three Nutanix clusters located in separate data centers. If the network latency between two clusters exceeds 25ms RTT, what impact might this have on the NDB HA setup?
Answer: A
Explanation:
NDB supports high availability (HA) across multiple Nutanix clusters, including those in separate data centers, by replicating data and ensuring failover capabilities. However, NDB imposes strict network latency requirements for HA. The official documentation specifies that the round-trip time (RTT) latency between clusters should not exceed 25ms for HA to function effectively. If the latency between two clusters exceeds this threshold (e.g., due to geographic distance or network issues), HA cannot be enabled, as the synchronization and failover mechanisms rely on low-latency communication to maintain consistency and performance.
Impact of other options:
* A. HA will operate with increased delay: While latency might cause delays, exceeding 25ms RTT prevents HA setup entirely, not just delays its operation.
* C. The clusters will not synchronize: Synchronization issues may occur as a symptom, but the primary impact is HA enablement failure.
* D. There will be no impact on HA functionality: This is incorrect, as latency beyond 25ms RTT violates HA prerequisites.
Thus, the verified answer is B, reflecting NDB's latency constraints for HA across clusters.
Official Nutanix Database Automation References
* Nutanix Database Management & Automation (NDMA) course, Module 4: High Availability and Disaster Recovery, Lesson 4.2: Configuring Multi-Cluster HA.
* Nutanix Certified Professional - Database Automation (NCP-DB) v6.5 Knowledge Objectives, Section
4: Troubleshoot NDB Solutions, Objective 4.3: Configure HA Across Clusters (applicable to v6.10).
* Nutanix NDB Administration Guide: "High Availability Configuration Requirements" section, specifying latency limits.
NEW QUESTION # 132
An administrator is experiencing issues with NDB and some of its operations. A case has been logged with Nutanix Support and a request has been made to gather a diagnostics bundle.
Where are two valid places to generate and download a diagnostics bundle? (Choose two.)
Answer: B,C
Explanation:
When an administrator experiences issues with NDB and Nutanix Support requests a diagnostics bundle, it can be generated from two valid locations. The NDB GUI provides an option under the administration or support section to create and download the bundle, offering a user-friendly interface. Alternatively, the NDB CLI allows generation via specific commands (e.g., era diagnostics collect), providing a scriptable approach.
Both methods are supported for troubleshooting and support purposes.
* Option A (Prism Central GUI) is incorrect because diagnostics for NDB are managed within NDB interfaces, not Prism Central.
* Option B (Prism Element GUI) is incorrect as Prism Element focuses on cluster management, not NDB-specific diagnostics.
* Option C (NDB GUI) is correct as it supports bundle generation via the UI.
* Option D (NDB CLI) is correct as it supports bundle generation via command-line tools.
References
* Nutanix Database Service (NDB) User Guide, Chapter 6: Administering an NDB Environment, Section: Generating Diagnostics Bundle
* Nutanix Support & Insights, Knowledge Base Article: "Collecting NDB Diagnostics for Support"
* Nutanix Certified Professional - Database Automation (NCP-DB) v6.5 Blueprint, Section 6: Administer an NDB Environment
NEW QUESTION # 133
What feature of Era allows an administrator to create Time Machine policies in a Multi-Cluster configuration?
Answer: A
Explanation:
The Global Service Level Agreement (SLA) feature of Era allows an administrator to create Time Machine policies in a Multi-Cluster configuration1. This feature provides a unified way to manage and enforce backup and replication policies across multiple clusters, ensuring consistent data protection and recovery across the entire environment1.
NEW QUESTION # 134
An administrator enables NDB Multi-Cluster on Cluster A. Cluster B is then registered with NDB.
What are the different NDB Service VMs present in each Nutanix cluster?
Answer: D
Explanation:
NDB Multi-Cluster is a feature that allows multiple Nutanix clusters to share a common NDB service for database management and automation. NDB service consists of two components: NDB Server and NDB Agent. NDB Server is the central component that provides the web UI, REST API, and database orchestration logic. NDB Agent is thecomponent that runs on each Nutanix cluster and communicates with the NDB Server to perform database operations.
When NDB Multi-Cluster is enabled on Cluster A, it becomes the primary cluster that hosts the NDB Server VM. Cluster B, which is registered with NDB, becomes a secondary cluster that hosts only the NDB Agent VM. Therefore, Cluster A has both NDB Server and NDB Agent, while Cluster B has only NDB Agent. This configuration allows Cluster B to leverage the NDB service running on Cluster A for database management and automation.
References:
* Nutanix Database Automation (NCP-DB) Course Details, Section 3.1: NDB Multi-Cluster Overview
* Nutanix Database Automation (NCP-DB) Certification Details, Objective 3.1: Configure NDB Multi-Cluster
* Nutanix Database Automation (NCP-DB) YouTube Playlist, Video 3.1: NDB Multi-Cluster Overview
NEW QUESTION # 135
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