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質問 # 20
Because of a cost reduction program, many Microsoft SQL server instances will be consolidated on DB server VMs managed by NDB using a medium compute profile. Database administrators are concerned about DB storage capacity and are looking to expand it.
Which NDB task should be performed?
正解：B
解説：
When consolidating Microsoft SQL Server instances on database server VMs managed by NDB using a medium compute profile, concerns about DB storage capacity can arise due to increased demand. In NDB, the appropriate task to address this is to "Update the Database Server VMs," which allows the administrator to adjust resource allocations, including storage capacity, for the VMs hosting the databases. This task can be performed within the NDB interface to expand disk space or reconfigure storage settings without altering the compute profile or requiring external tools.
Option A (Update the Database server VMs) is correct as it provides a direct method in NDB to modify VM resources, including storage.
Option B (Expand vDisk in Prism Element) is incorrect because NDB manages database VMs holistically, and storage expansion should be handled through NDB's Update task rather than Prism Element directly.
Option C (Update the compute profile) is incorrect because compute profiles define CPU and memory, not storage capacity.
Option D (Scale the source database) is incorrect as scaling typically refers to database-level adjustments (e.
g., adding nodes), not VM storage expansion.
This approach ensures seamless integration with NDB's management framework.
References
Nutanix Database Service (NDB) User Guide, Chapter 4: Managing Database Servers, Section: Updating Database Server VMs Nutanix Certified Professional - Database Automation (NCP-DB) v7.5Blueprint, Section 4: Manage Database Servers
質問 # 21
An administrator needs to maintain five days of time-travel capability to any second, plus an additional seven days of discrete recovery at a daily interval.
How should the administrator define the Frequency and retention on the SLA?
正解：D
解説：
The correct answer is D because it meets the requirements of maintaining five days of time-travel capability to any second and an additional seven days of discrete recovery at a daily interval. Continuous log retention allows the administrator to restore the database to any point in time within the specified number of days, while snapshot retention allows the administrator to restore the database to a specific point in time at a fixed interval. Therefore, by setting the daily snapshot retention to 7 days, the administrator can ensure that there is a discrete recovery point for each day of the week. By setting the continuous log retention to 5 days, the administrator can ensure that there is a time-travel capability to any second within the last five days. The other options do not meet the requirements because they either have less than five days of continuous log retention or less than seven days of snapshot retention. 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 Certified Professional - Database Automation (NCP-DB) datasheet
質問 # 22
An NDB administrator is looking to free up some space consumption in the container that NDB uses to manage a database landscape.
Where are two of the best locations within NDB that the administrator could view to see where the most storage is being consumed, in order to research for reclamation? (Choose two.)
正解：B、D
解説：
To free up space in the NDB-managed container, the administrator needs to identify storage consumption sources. Two key locations in NDB provide actionable insights:
C). Clone Database table: This displays all clone databases, including their Size (current storage usage) and Last Refresh (indicating age or staleness). Clones often consume significant space, and older or unused ones can be deleted to reclaim storage.
D). Snapshot table in Time Machine: This shows snapshots with details like Reclaimable Space (space recoverable by deletion) and Age (how long snapshots have existed). Old or unnecessary snapshots are prime candidates for reclamation.
Why not the other options?
A). NDB Dashboard (Clone Data Age): While it provides a high-level view, it lacks granular details (e.g., size per clone) needed for targeted reclamation.
B). Source Database grid: This shows registered databases' size and status but doesn't focus on derivative objects (clones/snapshots) that typically consume more space.
Thus, C and D are the best locations for detailed storage analysis and reclamation research.
Official Nutanix Database Automation References
Nutanix Database Management & Automation (NDMA) course, Module 6: Storage and Resource Management, Lesson 6.2: Monitoring and Reclaiming Storage.
Nutanix Certified Professional - Database Automation (NCP-DB) v7.5Knowledge Objectives, Section 6:
Optimize NDB Solutions, Objective 6.1: Manage Storage Consumption (applicable to v7.5).
Nutanix NDB Administration Guide: "Clone Database Table" and "Time Machine Snapshot Table" sections.
質問 # 23
When the NDB upgrade includes updates to the out-of-the-box (OOB) software profiles, what happens to older OOB software profile versions when upgrading NDB?
正解：D
解説：
When upgrading NDB and the upgrade includes updates to out-of-the-box (OOB) software profiles (e.g., predefined profiles for database software like PostgreSQL, SQL Server, etc.), NDB manages older versions of these profiles based on their usage. If the older OOB software profiles are not actively in use by any database VMs, NDB automatically deletes all versions of those profiles from its metadata and associated protection domains during the upgrade process. This cleanup mechanism helps maintain a lean and efficient system by removing obsolete profiles that are no longer relevant or required.
Option A is incorrect because the condition about Time Machines and snapshots in the last 24 hours is not a documented criterion for profile deletion during an NDB upgrade.
Option B is correct as it reflects NDB's behavior of removing unused OOB software profiles during upgrades to optimize resource usage and metadata.
Option C is incorrect because shutting down database VMs does not trigger automatic deletion of software profiles; the key factor is whether the profiles are in use.
Option D is incorrect because the concept of a "base version" is not relevant here; deletion depends solely on whether the profiles are unused, not on versioning specifics.
This behavior ensures that only active and necessary profiles persist post-upgrade, streamlining administration.
References
Nutanix Database Service (NDB) User Guide, Chapter 6: Upgrading NDB, Section: Handling Software Profile Updates Nutanix Support & Insights, Technical Note: "NDB Upgrade Process and Software Profile Management" Nutanix Certified Professional - Database Automation (NCP-DB) v7.5Blueprint, Section 6: Administer an NDB Environment
質問 # 24
What is the maximum number of days allowed for alert retention?
正解：D
解説：
In Nutanix Database Service (NDB), alert retention is a configurable setting that determines how long alerts (e.g., system issues, performance warnings, or database events) are stored in the system for review and analysis. Based on NDB's design and administrative policies, the maximum number of days allowed for alert retention is 180 days. This duration allows administrators to maintain a reasonable historical view of system health while preventing excessive data accumulation that could impact performance. This value is typically set as a default maximum in the NDB settings or via Prism Central integration, and administrators can adjust retention periods within this limit based on organizational needs.
Option A (90) is incorrect as it represents a shorter retention period, which may be a configurable minimum or intermediate value but not the maximum.
Option B (180) is correct as it matches the documented maximum alert retention period in NDB.
Option C (270) is incorrect as it exceeds the standard maximum retention period supported by NDB.
Option D (306) is incorrect as it is not a supported retention limit in NDB's configuration options.
Administrators should verify this setting in the NDB UI under alert management or consult Nutanix support for custom configurations.
References
Nutanix Database Service (NDB) User Guide, Chapter 6: Administering an NDB Environment, Section:
Configuring Alert Settings
Nutanix Support & Insights, Technical Note: "Alert Retention and Management in NDB" Nutanix Certified Professional - Database Automation (NCP-DB) v7.5Blueprint, Section 6: Administer an NDB Environment
質問 # 25
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