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NEW QUESTION # 93
An administrator needs to perform patching on a MongoDB server cluster within an NDB environment.
How should the administrator accomplish this task?
Answer: D
Explanation:
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.
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.
NEW QUESTION # 94
Before registering a database server VM to NDB, what should an administrator use to verify all required software and configuration dependencies?
Answer: C
Explanation:
Before registering a database server VM to NDB, an administrator must verify that all required software (e.g., database engine, OS dependencies) and configuration settings (e.g., WinRM for Windows, SSH for Linux) are in place. NDB provides a prerequisites script, which can be run on the target VM to check these dependencies automatically. This script ensures compatibility and readiness, reducing registration failures.
* Option A (LCM - Lifecycle Manager) is incorrect because LCM is used for cluster upgrades, not VM prerequisite checks.
* Option B (Upgrade Software) is incorrect as it applies to updating existing software, not initial dependency verification.
* Option C (Prerequisites script) is correct as it is the designated tool for pre-registration validation.
* Option D (NCC - Nutanix Cluster Check) is incorrect because NCC checks cluster health, not VM- specific software dependencies.
References
* Nutanix Database Service (NDB) User Guide, Chapter 2: Deploying and Configuring an NDB Solution, Section: Preparing Database Server VMs
* Nutanix Certified Professional - Database Automation (NCP-DB) v6.5 Blueprint, Section 2: Deploy and Configure an NDB Solution
NEW QUESTION # 95
Which action must an administrator take in Era Networks before using Era to provision a MSSQL AG cluster?
Answer: C
Explanation:
According to the Nutanix Database Automation (NCP-DB) learning documents, before using Era to provision a MSSQL AG cluster, an administrator must configure a private network in Era for the heartbeat traffic1. This is because the heartbeat traffic is crucial for maintaining the health and status of the MSSQL AG cluster. The heartbeat traffic is used by the nodes in the cluster to communicate with each other and check the status of the other nodes. If a node does not receive a heartbeat from another node within a certain time frame, it assumes that the other node has failed and takes appropriate action234.
NEW QUESTION # 96
An administrator receives a report that the NDB environment is approaching its storage-capacity limits. The administrator needs to identify which databases and associated entities consume the most storage.
Where should the administrator look first?
Answer: A
Explanation:
The administrator should begin with the NDB dashboard because its Storage Usage information provides a consolidated view of capacity consumed by registered clusters and NDB-managed entities. The dashboard distinguishes consumption associated with source databases, clones, and Time Machines, making it the fastest location for identifying the largest storage consumers before investigating an individual entity. Database Server Details focuses on a selected server and does not provide the same environment-wide comparison.
Time Machine Properties applies only to a particular protection entity, while Software Profile Management concerns database software images and versions rather than database storage consumption. NDB also records historical storage information, enabling administrators to assess trends and determine whether capacity pressure is increasing. Nutanix's official NDB Dashboard documentation confirms that the Storage Usage view reports consumption for data sources, clones, Time Machines, and registered Nutanix clusters.
NEW QUESTION # 97
Refer to the exhibit.
A request is received to provision a new Oracle SIHA DB & VM to test ASMLIB on OEL79 and Oracle 19c.
When walking through the provisioning workflow, only ASMFD is available in the ASM Driver drop down.
What is necessary to provision the requested SIHA DB and DB VM with ASMLIB?
Answer: D
Explanation:
In the context of Nutanix Database Automation (NCP-DB), when provisioning a new Oracle SIHA DB & VM, if only ASMFD is available in the ASM Driver drop-down, it indicates that ASMLIB is not included in the current software profile. To provision the requested SIHA DB and DB VM with ASMLIB, it's essential to update the software profile to include the ASMLIB driver. This action will enable ASMLIB as an option in the ASM Driver drop-down during the provisioning workflow.
Nutanix Database Automation (NCP-DB) Course Details, Section 2.3: Provisioning Oracle Databases Nutanix Database Automation (NCP-DB) Certification Details, Objective 2.3: Provision Oracle Databases Nutanix Database Automation (NCP-DB) YouTube Playlist, Video 2.3: Provisioning Oracle Databases
[Nutanix Database Automation (NCP-DB) User Guide], Section 2.3: Provision Oracle Databases
NEW QUESTION # 98
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