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NEW QUESTION # 212
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?
Answer: A
Explanation:
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) v6.5 Knowledge Objectives, Section
4: Troubleshoot NDB Solutions, Objective 4.3: Configure HA Across Clusters (applicable to v6.10).
* Nutanix NDB Administration Guide: "High Availability Configuration Requirements" section, specifying latency limits.
NEW QUESTION # 213
A database admin logs into Era to manage an Oracle Database VM and sees a message Update Available on the Status of the Software Profile Version.
What should the database admin do?
Answer: D
Explanation:
In Nutanix Database Automation (NCP-DB), when an administrator logs into Era and sees a message "Update Available" on the Status of the Software Profile Version, it indicates that a newer version of the software profile is available1. The administrator should manually update the software profile to the latest version12. This process ensures that the database VM is running the most recent and compatible version of the software12.
NEW QUESTION # 214
An administrator needs to protect a database with a Point In Time Recovery (PITR) SLA that provides a minimum of seven days of log recovery.
What is the minimum Default SLA that meets this requirement?
Answer: D
Explanation:
Nutanix Era (NDB) utilizes DEFAULT_008 SLAs with varying frequencies for snapshots and log backups to achieve different recovery point objectives (RPOs). Here's how they compare:
* DEFAULT_008 GOLD SLA: Typically has frequent log backups (e.g., every 15 minutes) and snapshots every few hours. This is designed for critical databases with very low RPOs.
* DEFAULT_008 SILVER SLA: Offers a balance between protection and resource usage. Log backups might occur every hour with snapshots less frequently. This SLA is often suitable for databases requiring a good RPO without being overly resource-intensive.
* DEFAULT_008 BRONZE SLA: Has less frequent log backups (e.g., every few hours) and less frequent snapshots. This is used for databases with less stringent RPO requirements.
* DEFAULT_008 BRASS SLA: This has infrequent log backups and is usually considered the least protective SLA with the longest potential RPO Reasoning:
Since the requirement is to have at least a 7-day log recovery period, any SLA with more frequent log backups than daily is excessive. The DEFAULT_008 SILVER SLA, with its hourly log backups, easily satisfies this requirement, offering the ability to restore to a point in time within the last hour of the past seven days.
References:
* Nutanix Era User Guide/SLA Management:
https://portal.nutanix.com/page/documents/details?targetId=Nutanix-NDB-User-Guide-v2_5:top-sla-mana
NEW QUESTION # 215
An administrator needs to add multiple databases to an existing PostgreSQL instance.
How should the administrator satisfy this requirement?
Answer: B
Explanation:
To add multiple databases to an existing PostgreSQL instance managed by NDB, the administrator should use the NDB graphical user interface (GUI). The GUI provides a user-friendly way to modify the parameter profile associated with the PostgreSQL instance, allowing the addition of new databases by adjusting settings such as database names, sizes, or configurations. This process typically involves navigating to the "Databases" or "Instances" section, selecting the PostgreSQL instance, and editing the parameter profile to include additional databases.
Other options are less appropriate:
* A. Modify parameter profile using ncli: The ncli (Nutanix Command Line Interface) is used for cluster-level management in Prism, not for NDB database configuration.
* C. Modify parameter profile using post script: Post-scripts are used for custom actions post- provisioning, not for modifying parameter profiles to add databases.
* D. Modify parameter profile using NDB CLI: While NDB has a CLI, the GUI is the recommended and supported method for such configuration changes, offering a guided workflow and validation.
Thus, the verified answer is B, leveraging the NDB GUI for ease and compliance with best practices.
Official Nutanix Database Automation References
* Nutanix Database Management & Automation (NDMA) course, Module 3: Managing Database Instances, Lesson 3.4: Modifying Database Configurations.
* Nutanix Certified Professional - Database Automation (NCP-DB) v6.5 Knowledge Objectives, Section
3: Manage NDB Solutions, Objective 3.3: Modify Parameter Profiles (applicable to v6.10).
* Nutanix NDB Administration Guide: "Managing PostgreSQL Instances" section, detailing GUI-based modifications.
NEW QUESTION # 216
An administrator has been tasked with deploying an NDB VM on an AHV cluster and must assign a static IP address during the deployment of the virtual machine.
How can the administrator accomplish this task during deployment?
Answer: A
Explanation:
An NDB VM on AHV is Linux-based, so the documented in-deployment method uses Prism Element's Custom Script facility with cloud-init. The script begins with #cloud-config and invokes configure_static_ip with the required address, gateway, and netmask values; a name server can also be supplied. Selecting a non- DHCP VLAN by itself does not configure the guest operating system with the requested static address.
Sysprep applies to Windows guests, so it is not appropriate for the NDB appliance. The official AHV installation procedure places the cloud-init script in the "Type or paste script" field while creating the VM in Prism Element. Therefore, using a custom script and cloud-config in Prism Element is the supported method for assigning the static IP address during deployment, as specified in the NDB installation procedure for AHV.
NEW QUESTION # 217
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