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NEW QUESTION # 42
An administrator needs to provision a PostgreSQL cluster instance with an external Load Balancer. Which software can be omitted on the Reference VM while creating the Software Profile?
Answer: C
Explanation:
When provisioning a PostgreSQL cluster instance with an external load balancer in NDB, the administrator creates a software profile from a reference VM. The reference VM typically includes software like Patroni (for HA management), HAProxy (for internal load balancing), keepalived (for high availability IP management), and etcd (for distributed configuration). Since an external load balancer is used, the internal HAProxy can be omitted from the reference VM. NDB will rely on the external load balancer to distribute traffic, eliminating the need for HAProxy in the software profile, while the other components remain essential for cluster management.
* Option A (Patroni) is incorrect because Patroni is required for PostgreSQL HA management.
* Option B (HAProxy) is correct as it can be omitted when an external load balancer is configured.
* Option C (keepalived) is incorrect because keepalived is needed for HA IP failover.
* Option D (etcd) is incorrect because etcd is necessary for distributed configuration in the cluster.
This adjustment streamlines the profile for external load balancer use.
References
* Nutanix Database Service (NDB) User Guide, Chapter 4: Managing Software Profiles, Section:
Creating Software Profiles for HA Instances
* Nutanix Certified Professional - Database Automation (NCP-DB) v6.5 Blueprint, Section 4: Manage Database Software Profiles
NEW QUESTION # 43
Which policies define Time Machine data availability across multiple registered clusters in NDB?
Answer: D
Explanation:
The recovery plans policy defines the Time Machine data availability across multiple registered clusters in NDB. The recovery plans policy allows the database administrator to specify the source and target clusters, the frequency and retention of the cross-cluster snapshots, and the network and compute profiles for the recovery operations. The recovery plans policy helps to ensure the disaster recovery and business continuity of the NDB-managed databases in case of a cluster failure or outage.
The data access management policy defines the access permissions and roles for the NDB users and groups.
The data access management policy allows the database administrator to grant or revoke access to the NDB instance, the database server VMs, the databases, and the database operations. The data access management policy helps to ensure the security and compliance of the NDB-managed databases and users.
The data protection policy defines the backup and restore settings for the NDB-managed databases. The data protection policy allows the database administrator to specify the frequency, retention, and compression of the database snapshots, and the backup location and encryption for the database backups. The data protection policy helps to ensure the backup and recovery of the NDB-managed databases within the same cluster.
The service level agreements policy defines the performance and availability metrics for the NDB-managed databases. The service level agreements policy allows the database administrator to monitor and enforce the database uptime, latency, throughput, and IOPS. The service level agreements policy helps to ensure the quality of service and performance of the NDB-managed databases.
Nutanix Database Management & Automation Training Course, Module 4: Nutanix Era Configuration, Lesson 4.1: Nutanix Era Configuration, slide 9.
Nutanix Database Management & Automation Training Course, Module 5: Nutanix Era Operations, Lesson
5.1: Nutanix Era Operations, slides 8, 12, 16, 20.
Nutanix Database Management & Automation Training Course, Module 6: Nutanix Era Disaster Recovery, Lesson 6.1: Nutanix Era Disaster Recovery, slides 5-7.
NEW QUESTION # 44
Era allows custom metadata to be assigned to entities (clones, time machines, databases, and database servers) by using which component?
Answer: A
Explanation:
Nutanix Era allows custom metadata to be assigned to entities (clones, time machines, databases, and database servers) by using Tags. Tags are a component of Nutanix Era that allows users to assign custom metadata to various entities, enhancing the ability to organize, search, and manage these entities within the Era platform1.
NEW QUESTION # 45
A Log Catchup gap has occurred, impacting the ability to perform point-in-time restore (PITR) operations to create a clone or perform a database restore.
Which two statements below are true for the NDB Time Machine Heal Snapshot feature? (Choose two.)
Answer: A,D
Explanation:
A Log Catchup gap in Nutanix Database Service (NDB) occurs when transaction logs are missing or corrupted, disrupting point-in-time restore (PITR) operations for cloning or database restoration via Time Machine. The NDB Time Machine Heal Snapshot feature addresses this by repairing snapshots to resolve such gaps.
* Option A (By default the time machine auto-heal feature is enabled) is incorrect because the auto- heal feature is not enabled by default; it requires explicit configuration or manual invocation.
* Option B (Manual Heal is only used when gaps in Log Catchup are detected once the operation has begun failing) is incorrect because manual heal can be initiated proactively or reactively, not solely after failure detection.
* Option C is correct because a successful Time Machine Heal process restores the snapshot integrity, allowing PITR to span the previously gapped period.
* Option D is correct as the auto-heal process, when enabled, runs every 5 minutes to detect and address healable conditions, aligning with NDB's automated maintenance schedule.
Together, C and D reflect the operational mechanics of the Heal Snapshot feature.
References
* Nutanix Database Service (NDB) User Guide, Chapter 5: Configuring Time Machines, Section:
Healing Snapshot Gaps
* Nutanix Support & Insights, Knowledge Base Article: "Resolving Log Catchup Gaps with Time Machine Heal"
* Nutanix Certified Professional - Database Automation (NCP-DB) v6.5 Blueprint, Section 5: Protect Databases Using Time Machine
NEW QUESTION # 46
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.
References:
* 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 # 47
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