B.   Add the new subnet end VLAN in Network Configuration in PE.

C.   Add the new VLAN in Ere Networks.

Explanation:
According to the Nutanix Database Automation (NCP-DB) learning documents, to provision a new network in Clusters and extend it to Era, you need to:

• B. Add the new subnet and VLAN in Network Configuration in PE1.
• C. Add the new VLAN in Era Networks1.

These steps ensure that the new network is properly configured in both the Nutanix environment and Era, allowing for seamless communication and operation. Please refer to the official Nutanix documentation and training materials for more detailed information1.

D.   Email

Explanation:
NDB sends notifications when alerts are generated via email. The email notifications can be configured to send to one or more recipients, and can be customized to include the alert severity, category, description, and resolution steps. The email notifications help to inform the database administrator and other stakeholders about the status and issues of the NDB-managed databases and operations.
NDB does not send notifications via SNMP, APIs, or Pulse. SNMP is a protocol for collecting and organizing information about managed devices on a network. APIs are interfaces for communicating and exchanging data between different applications or systems. Pulse is a feature of the Nutanix cluster that collects and sends diagnostic and usage data to Nutanix for analysis and support.

A.   More than one API Server VM is down.

Explanation:
NDB HA is a feature that provides high availability and resilience for the NDB service and its components. NDB HA creates a cluster of API server VMs, repository VMs, and HAProxy VMs across multiple Nutanix clusters. Each component has a leader and a set of followers that are synchronized and can take over the leader role in case of a failure. NDB HA also monitors the health and status of the NDB components and performs automatic failover and recovery actions when possible.
However, some failure scenarios may require manual intervention from the administrator to restore the NDB service. One such scenario is when more than one API server VM is down. The API server VMs are responsible for handling the requests from the NDB UI and CLI, as well as communicating with the repository VMs and the HAProxy VMs. If more than one API server VM is down, the NDB service may become unavailable or unstable, and the administrator will need to manually restart or redeploy the affected API server VMs.
The other options do not require manual interaction for the recovery, as NDB HA can handle them automatically. If one repository VM is down, NDB HA will fail over to another repository VM that has the latest data. If more than one HAProxy VM is down, NDB HA will route the traffic to the remaining HAProxy VMs. If the NDB server process is down, NDB HA will restart the process or fail over to another API server VM.

B.   Update the software profile version and set the status to Published.

Explanation:
When an administrator creates a new SQL Server software profile version to apply the latest cumulative update, they should update the software profile version and set the status to Published1. This makes the new profile version available to all users. NDB will show available updates for any database server using the software profile as soon as the new profile version is published1.

C.   Critical, Warning Info

Explanation:
The Alerts dashboard in Nutanix displays alert messages with three severity levels: Critical, Warning, and Info1. These severity levels help users understand the importance and urgency of each alert, allowing them to prioritize their responses accordingly1.

D.   Infrastructure Administrator

Explanation:
An Infrastructure Administrator is a role in NDB that has the permission to manage network and storage resources, such as VLANs, IP Pools, and Storage Containers. This role is suitable for the engineer who needs to add new VLANs or IP Pools in NDB. The other roles have either more or less privileges than required for this task. A Database Administrator can manage databases and database server VMs, but not network and storage resources. A Super Administrator can manage all aspects of NDB, but this is more than the leastprivilege access needed. A Database Infrastructure Administrator can manage both databases and network and storage resources, but this is also more than the least-privilege access needed.

C.   From Administration, select Ere Service then go to configure notification widget and then click update to update SMTP server configuration

Explanation:
According to the Nutanix Database Automation (NCP-DB) learning documents, to configure Era to send alert notifications to email recipients, you need to go to the Administration section, select Era Service, then go to the configure notification widget. From there, you can update the SMTP server configuration1. This allows Era to use the SMTP server to send alert notifications to the specified email recipients1.

A.   Era Cluster Agent

Explanation:
According to the Nutanix Database Automation (NCP-DB) learning documents, when doing an Era software upgrade for a Multi-Cluster enabled installation, the Era Cluster Agent is upgraded first1. This is the first component in a Nutanix Environment Upgrade cycle2. The Era Cluster Agent is crucial for managing and monitoring the health of the Nutanix clusters1. Please refer to the official Nutanix documentation and training materials for more detailed information1.

A.   In-place upgrade

Explanation:
When an Oracle database is upgraded using Era, the type of upgrade category is an “In-place upgrade”. This method involves upgrading the database software within the same Oracle home as the existing database. The AutoUpgrade utility is used to automate the upgrade process, both before starting upgrades, during upgrade deployments, and during post-upgrade checks and configuration migration1. This method is preferred due to its simplicity and efficiency1.

A.   Windows Domain

Explanation:
The correct answer is A because the Windows Domain profile is the profile that includes information related to the SQL service startup account and the NDB worker service account. A Windows Domain profile is a collection of settings that define how NDB manages Windows-based database servers and databases. It contains the following information:

• The domain name and credentials to join the database server VMs to the domain.
• The SQL service startup account and password to run the SQL Server service on the database server VMs.
• The NDB worker service account and password to run the NDB Database Agent service on the database server VMs.
• The SQL Server authentication mode to use for the databases.

By using a Windows Domain profile, the administrator can simplify the database provisioning process by applying the same settings to multiple database server VMs and databases, without having to manually enter them each time. The other options are not correct because they describe different types of profiles that do not include information related to the SQL service startup account and the NDB worker service account.
Option B is not correct because the Network profile is a profile that defines the network settings for the database server VMs, such as the IP address, subnet mask, gateway, DNS, and VLAN.
Option C is not correct because the Database Parameter profile is a profile that defines the database parameters for the databases, such as the memory, CPU, storage, and performance settings.
Option D is not correct because the Software profile is a profile that defines the software settings for the database server VMs and databases, such as the database engine version, edition, and features.

A.   Add Data Access to each Nutanix cluster and assign a DAM policy.

Explanation:
To replicate database snapshots to remote Nutanix clusters, the administrator needs to add Data Access to each Nutanix cluster and assign a Data Availability Management (DAM) policy. Data Access is a feature of NDB that enables cross-cluster data mobility and protection. A DAM policy defines the replication frequency, retention period, and priority of the database snapshots across the clusters. By adding Data Access to each Nutanix cluster and assigning a DAM policy, the administrator can manage the Time Machine data availability across all registered Nutanix clusters in NDB.

B.   A private network must be configured in Era for the heartbeat traffic.

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 traffic. 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 action.