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Nutanix NCP-DB 考試大綱：

主題	簡介
主題 1	Administer an NDB Environment: While focusing on the administration of an NDB environment, this topic focuses on managing NDB profiles, applying procedural concepts, and managing networks in NDB. Lastly, the topic explains sub-topics of managing access controls in NDB and identifying how to use NDB APIs and CLI.
主題 2	Describe NDB Concepts: It defines database and NDB terminology. The topic also explains benefits and features of NDB.
主題 3	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.
主題 4	Monitor Alerts and Storage Usage Within an NDB Implementation: It is all about monitoring alerts and management of storage usage.
主題 5	Deploy and Configure an NDB Solution: This topic discusses how to deploy, configure, and NDB Instance.

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最新的 Nutanix Certified Professional (NCP) NCP-DB 免費考試真題 (Q272-Q277):

問題 #272
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?

A. The clusters will not synchronize.
B. There will be no impact on HA functionality.
C. HA cannot be enabled due to the latency.
D. HA will operate with increased delay.

答案：C

解題說明：
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) v7.5Knowledge Objectives, Section 4:
Troubleshoot NDB Solutions, Objective 4.3: Configure HA Across Clusters (applicable to v7.5).
Nutanix NDB Administration Guide: "High Availability Configuration Requirements" section, specifying latency limits.

問題 #273
At 2:15 PM, an application developer accidentally executes a destructive DROP TABLE command on a production Oracle database managed by NDB. The last scheduled daily snapshot occurred at midnight, but log catch-up is enabled and healthy. The developer requires a copy of the data exactly as it appeared at 2:10 PM to recover the lost table without interrupting the live production instance.
How should the NDB administrator proceed?

A. Access the NDB Time Machine and create a Clone, choosing the point-in-time recovery option for 2:10 PM.
B. Access the NDB Time Machine and run a Restore operation, choosing the point-in-time recovery option for 2:10 PM.
C. Access the NDB Profiles menu and provision a new database instance, selecting the 2:10 PM transaction-log sequence as the software baseline.
D. Access the NDB Time Machine and perform a Refresh operation, choosing the log catch-up option for
2:10 PM.

答案：A

解題說明：
Creating a point-in-time clone is the correct nondisruptive recovery action. NDB Time Machine combines snapshots with captured Oracle archive logs to construct a database at a selected recoverable timestamp.
Choosing 2:10 PM replays the available logs only through that moment, which precedes the 2:15 PM DROP TABLE. Because the result is a separate clone, the production database remains online and unchanged while the administrator extracts and returns the missing table data. A restore would rewind the source database itself and could interrupt or overwrite its current state. Refresh applies to an existing clone rather than creating the required recovery copy, while a Software Profile defines database software instead of transactional content.
Nutanix's Oracle cloning guidance therefore supports option D. Nutanix Oracle clone documentation

問題 #274
While using Time Machine (TM) to restore a source database, the option to restore data to Point in Time is not available. What should an administrator do to restore databases to Point in Time?

A. Restore Source DB using a snapshot
B. Update TM SLA to BRONZE or higher.
C. Create DB clone using a snapshot.
D. Update TM SLA to BRASS or lower.

答案：B

解題說明：
In Nutanix Database Service (NDB), the Time Machine (TM) feature allows restores, including Point-in-Time (PIT) restores, which require continuous log retention to replay transaction logs to a specific moment. If the option to restore data to a Point in Time is unavailable, it indicates that the current Time Machine Service Level Agreement (SLA) does not support continuous log retention. NDB SLAs are categorized (e.g., BRONZE, SILVER, GOLD), with BRONZE or higher levels required to enable PIT restore by including continuous log retention. The administrator must update the TM SLA to at least BRONZE to enable this feature, ensuring logs are retained for PIT operations.
* Option A (Restore Source DB using a snapshot) is incorrect because a snapshot-only restore does not support PIT; it restores to the snapshot time only.
* Option B (Update TM SLA to BRONZE or higher) is correct as it enables continuous log retention necessary for PIT restores.
* Option C (Create DB clone using a snapshot) is incorrect because cloning from a snapshot does not provide PIT capability without log retention.
* Option D (Update TM SLA to BRASS or lower) is incorrect because "BRASS" is not a valid SLA tier, and lowering the SLA would not enable PIT.
This adjustment ensures PIT restore functionality.
References
* Nutanix Database Service (NDB) User Guide, Chapter 5: Configuring Time Machines, Section:
Configuring SLAs for Point-in-Time Restore
* Nutanix Certified Professional - Database Automation (NCP-DB) v6.5 Blueprint, Section 5: Protect Databases Using Time Machine

問題 #275
What are two status values that can be set within the Alerts Dashboard? (Choose two.)

A. Data Resiliency
B. Resolved
C. Auto
D. Acknowledged

答案：B,D

解題說明：
The correct answer is B and D because these are the two status values that can be set within the Alerts Dashboard in NDB. Resolved means that the alert has been fixed and no longer requires attention.
Acknowledged means that the alert has been seen and is being worked on. Option A is incorrect because Auto is not a status value, but a mode that automatically resolves alerts based on predefined rules. Option C is incorrect because Data Resiliency is not a status value, but a feature that ensures the availability and integrity of the data in NDB.
The following sources provide more information about the Alerts Dashboard and its status values in NDB:
Nutanix Database Management & Automation (NDMA) course, Module 3: Monitoring Alerts and Storage Usage Within an NDB Implementation, Lesson 3.1: Monitoring Alerts Nutanix Certified Professional - Database Automation (NCP-DB) v6.5, Knowledge Objectives, Section 3 - Monitor Alerts and Storage Usage Within an NDB Implementation Nutanix Database Service (NDB) User Guide, Chapter 3: Monitoring Alerts and Storage Usage Within an NDB Implementation, Section 3.1: Monitoring Alerts
[Nutanix Support & Insights], Resolving All Alerts Related to a Database or Database Server VM in NDB

問題 #276
Which NDB HA control plane VM is upgraded first during an NDB upgrade?

A. NDB Agent VMs
B. NDB Server
C. Leader HAProxy
D. Leader NDB API Server

答案：D

解題說明：
During an NDB upgrade, the upgrade process follows a specific order to maintain stability and HA. The Leader NDB API Server is upgraded first. This server coordinates API requests and ensures the control plane remains operational. Upgrading the leader first minimizes disruption, as subsequent components (e.g., other API servers, HAProxy) rely on its leadership role. Once the leader is upgraded, the remaining NDB HA control plane VMs (e.g., follower API servers, HAProxy) are updated in sequence.
Other options are incorrect:
* A. NDB Server: Refers to the main NDB instance, not upgraded first.
* C. Leader HAProxy: Upgraded after API servers to maintain load balancing.
* D. NDB Agent VMs: Upgraded last, as they are client-side components.
Thus, the verified answer is B, reflecting the upgrade sequence.
Official Nutanix Database Automation References
* Nutanix Database Management & Automation (NDMA) course, Module 2: Deploying and Configuring an NDB Solution, Lesson 2.4: Updating NDB.
* Nutanix Certified Professional - Database Automation (NCP-DB) v6.5 Knowledge Objectives, Section
2: Deploy and Configure an NDB Solution, Objective 2.3: Perform NDB Updates (applicable to v6.10).
* Nutanix NDB Administration Guide: "NDB Upgrade Process" section.

問題 #277
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