NCP-DB出題内容、NCP-DB赤本勉強
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Nutanix Certified Professional - Database Automation (NCP-DB) v6.5 認定 NCP-DB 試験問題 (Q182-Q187):
質問 # 182
While registering an Always on Availability Group database, an administrator selects the following option:
Multiple Databases as a Group with One Time Machine
Which statement is true regarding this chosen option?
正解：B
解説：
Nutanix Database Automation (NCP-DB) introduces the concept of MS SQL Server database groups, which allows multiple databases running in the same database instance to be grouped as one Time Machine entity1. This applies to both single DB Server VM setups, standalone databases, as well as to Availability Group databases1. However, it does not support Point In Time Recovery (PITR)-based Service Level Agreements (SLAs) for database groups containing mixed Recovery Models. This means that if the databases within the group have different recovery models, PITR-based SLAs cannot be applied to the group as a whole.
質問 # 183
An administrator needs to perform patching on a MongoDB server cluster within an NDB environment.
How should the administrator accomplish this task?
正解：A
解説：
The administrator should perform a rolling upgrade, applying the patch to the secondary members first, followed by the primary member, to accomplish the task of patching a MongoDB server cluster within an NDB environment. A rolling upgrade is a method of applying patches or updates to a cluster without downtime or interruption of service. The administrator can use the NDB patching feature to perform a rolling upgrade on a MongoDB server cluster, which consists of a primary member and one or more secondary members that form a replica set. The NDB patching feature allows the administrator to select the software profile version, the database parameters profile, and the network profile for the patching operation. The NDB patching feature also automates the steps of the rolling upgrade, such as:
* Step 1: The administrator initiates the patching operation on the NDB instance, and selects the MongoDB server cluster to be patched.
* Step 2: The NDB instance verifies the prerequisites and compatibility of the patching operation, and creates a pre-patch snapshot of the MongoDB server cluster.
* Step 3: The NDB instance applies the patch to the first secondary member of the MongoDB server cluster, and waits for the patching to complete successfully.
* Step 4: The NDB instance verifies the status and functionality of the patched secondary member, and repeats the patching process for the remaining secondary members of the MongoDB server cluster, one at a time.
* Step 5: The NDB instance performs a failover of the primary member to one of the patched secondary members, and applies the patch to the original primary member.
* Step 6: The NDB instance verifies the status and functionality of the patched primary member, and performs a failback of the primary member to the original primary member, if desired.
* Step 7: The NDB instance creates a post-patch snapshot of the MongoDB server cluster, and completes the patching operation.
Performing a rolling upgrade, applying the patch to the secondary members first, followed by the primary member, is the recommended and best practice method of patching a MongoDB server cluster within an NDB environment, as it ensures the high availability, consistency, and performance of the MongoDB server cluster and the databases.
Performing a rolling upgrade, applying the patch to the primary member first, followed by the secondary members, is not a valid or feasible method of patching a MongoDB server cluster within an NDB environment, as it would cause downtime, data loss, and inconsistency of the MongoDB server cluster and the databases. Applying the patch to the primary member first would disrupt the replication and synchronization of the MongoDB server cluster, and would require manual intervention and recovery steps to restore the MongoDB server cluster to a functional state.
Applying the patch to all nodes at once is not a valid or feasible method of patching a MongoDB server cluster within an NDB environment, as it would cause downtime, data loss, and inconsistency of the MongoDB server cluster and the databases. Applying the patch to all nodes at once would require shutting down the entire MongoDB server cluster, and would expose the MongoDB server cluster and the databases to potential errors, failures, and corruption during the patching process.
Disabling the replica set while patching is not a valid or feasible method of patching a MongoDB server cluster within an NDB environment, as it would cause downtime, data loss, and inconsistency of the MongoDB server cluster and the databases. Disabling the replica set while patching would break the replication and synchronization of the MongoDB server cluster, and would require manual intervention and recovery steps to re-enable the replica set and restore the MongoDB server cluster to a functional state.
References:
* Nutanix Database Management & Automation Training Course, Module 5: Nutanix Era Operations, Lesson 5.1: Nutanix Era Operations, slides 11-12, 15-16.
* Nutanix Database Management & Automation Training Course, Module 5: Nutanix Era Operations, Lesson 5.3: Nutanix Era Patching, slides 5-9.
* Nutanix Database Management & Automation Training Course, Module 5: Nutanix Era Operations, Lesson 5.4: Nutanix Era Patching Lab, slides 5-10.
* Nutanix Database Management & Automation Training Course, Module 7: Nutanix Era Troubleshooting, Lesson 7.1: Nutanix Era Troubleshooting, slide 6.
質問 # 184
An online retail application requires data to be synchronized between multiple SQL Server databases. This provides clearer reporting from multiple databases at the Same time for consistency at the end of each business day.
What is the best way to fulfill this requirement?
正解：D
解説：
Nutanix Era enables you to clone your source databases and refresh the database clones by using snapshots or transaction logs1. For an online retail application that requires data to be synchronized between multiple SQL Server databases, having all the databases present in the same Database Virtual Machine (DBVM) and registering them in Era with Multiple Databases as a Group with one Time Machine would be the most efficient way to fulfill this requirement1. This approach allows for clearer reporting from multiple databases at the same time for consistency at the end of each business day1.
質問 # 185
How should an administrator modify the Alert Severity level within Era?
正解：B
解説：
In Nutanix Era, an administrator can modify the Alert Severity level by navigating to the Alerts Policies from the dropdown menu. Once there, they can select the Policy that needs to be modified and set the desired severity level1. This allows the administrator to customize the alerts according to their requirements, ensuring that they are notified of the most critical events in their environment21.
質問 # 186
An administrator needs to apply a minor version upgrade of the PostgreSQL software to an Era provisioned instance.
Which step should the administrator take before applying the patch?
正解：A
解説：
Nutanix Database Service (NDB) supports automated minor version upgrades for PostgreSQL1. Before applying the patch, the administrator should create a new software profile2. This is because the software profile contains the database engine binaries and other software required to run the database engine2. Therefore, to apply a minor version upgrade, a new software profile with the updated binaries needs to be created2. Once the new software profile is created, it can be used to patch the PostgreSQL database2.
質問 # 187
......
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NCP-DB Nutanix Certified Professional - Database Automation (NCP-DB) v6.5トレーニング資料、NCP-DB問題集、NCP-DB試験ガイド
NCP-DBトレーニングエンジンでどのようなサービスがプロフェッショナルと見なされるかは、ご自身の判断で判断してください、NCP-DB学習教材は、すべての人々が学習効率を向上させるのに非常に役立ちます、すべての学習資料は常に更新されますが、固定日付には更新されません。
君はまずネットで無料なNutanixのNCP-DB試験問題をダウンロードしてから 弊社の品質を確信してから、購入してください。
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