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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Test BCDR Solutions | 25% | - Perform disaster recovery validation procedures - Verify site connectivity and replication throughput - Validate recovery plan execution and outcomes - Execute planned, unplanned, and test failovers |
| Topic 2: Perform BCDR Operational Tasks | 25% | - Post-failover cleanup and re-protection - Execute failover and failback workflows - Self-service restore operations - Snapshot-based VM and volume recovery - Migrate legacy protection domains to modern policies |
| Topic 3: Troubleshoot BCDR Failures | 20% | - Resolve storage and snapshot errors - Fix third-party backup integration problems - Troubleshoot replication and protection policy issues - Diagnose network-related replication failures - Resolve misconfigurations in DR environments |
| Topic 4: Interpret and Configure BCDR Requirements | 30% | - Configure network and storage for BCDR - Configure snapshot policies and retention - Determine prerequisites for BCDR configuration - Translate business requirements into RPO/RTO objectives - Select replication types: Async, NearSync, Synchronous, Metro - Create and configure recovery plans - Design secure BCDR environments: segmentation, RBAC, approval policies |
>> NCP-BC-7.5 Simulationsfragen <<
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60. Frage
Exhibit:
An administrator wants to protect the snapshots created on the cluster. Only authorized users should be allowed to modify or delete the snapshots on the cluster. How can the administrator harden the security of the snapshots?
Antwort: A
Begründung:
Security hardening for BCDR is focused on protecting the integrity of recovery points against accidental deletion, administrative errors, or malicious intent such as ransomware. While infrastructure-level hardening like SSH keys (Option C) or host-level security (Option A) is important, they do not prevent a user with valid administrative credentials in Prism from deleting a snapshot. To address the specific requirement of ensuring only " authorized " and verified actions can modify or delete snapshots, the administrator should implement an " Approval Policy " .
An Approval Policy introduces a " four-eyes " principle for critical management tasks. When this policy is active, any attempt to delete or modify a recovery point does not execute immediately. Instead, it triggers a request in the Prism Central " Task " console and enters a " Pending Approval " state. A separate authorized user-an " Approver " -must then review the request and explicitly grant permission before the deletion can occur. This creates a vital procedural safeguard, ensuring that no single individual has the unilateral power to destroy the organization ' s backup data. By configuring this policy, the administrator hardens the DR environment against both internal threats and external actors who might gain access to a single set of admin credentials, providing a robust layer of defense for critical data assets.
61. Frage
Which combination of Replication Schedules within the same Recovery Plan will cause the recovery to fail?
Antwort: A
Begründung:
A Recovery Plan in Nutanix is the orchestration engine that defines the power-on sequence, network mappings, and script execution for disaster recovery. While a single cluster can support various types of replication-Asynchronous, NearSync, and Synchronous-there are strict architectural limits on how these can be mixed within a single automated plan.
The primary conflict arises when mixing Synchronous (0 RPO) schedules with snapshot-based Asynchronous or NearSync schedules. Synchronous replication is an " Active-Standby " or " Active-Active " storage state where the destination site already has the data in a " mounted " but inactive container. In contrast, Asynchronous and NearSync recovery involve " restoring " a VM from a specific recovery point (snapshot), which includes registering the VM and attaching the disks during the failover process. Because the orchestration logic for a Zero-RPO synchronous failover is fundamentally different from a snapshot restoration, Nutanix prevents placing them in the same Recovery Plan. Attempting to do so will cause validation errors and lead to execution failure, as the orchestrator cannot simultaneously manage real-time failover and snapshot-based restoration for the same logical group. To successfully protect an environment with both types of RPO requirements, administrators must create separate Recovery Plans: one dedicated to Synchronous workloads and another for snapshot-based Asynchronous/NearSync workloads, ensuring that each set of VMs follows its appropriate recovery workflow.
62. Frage
Which two VM disk types does Self-Service restore support? (Choose two.)
Antwort: A,B
Begründung:
Self-Service Restore (SSR) relies on the Nutanix Guest Tools (NGT) agent to mount a historical snapshot disk to the guest OS via the hypervisor ' s virtual controller. For this to work seamlessly, the guest OS and the NGT agent must support the virtual bus types used by the virtual machine.
Nutanix SSR natively supports the two most common virtual disk controller types: SCSI (VirtIO) and IDE.
These are the standard formats for most virtual disks in Nutanix AHV and ESXi environments. When a user requests a file-level restore, the system takes the vDisk from the recovery point and attaches it as a new SCSI or IDE device to the running VM, which the guest OS then scans and mounts. Conversely, specialized storage entities like Volume Groups (VGs) (Option D) and certain high-performance direct-attached PCI-based storage (Option C) are not supported by the standard SSR workflow. Volume Groups, which are often used for shared storage between VMs (like SQL Clusters), require a different recovery method because they are not part of the standard VM-centric snapshot metadata that the SSR agent can browse. Therefore, SSR is primarily designed for the standard virtual disks that form the OS and application drives of typical virtualized workloads.
63. Frage
An administrator migrates a guest VM from a legacy Protection Domain-based DR configuration to a Prism Central (PC)-based Protection Policy. Immediately after migration, the administrator considers deleting the legacy Protection Domain snapshots to reclaim storage. According to Nutanix guidance, when is it safe to delete the legacy Protection Domain snapshots?
Antwort: A
Begründung:
Transitioning from legacy Protection Domains (which are cluster-centric) to modern Prism Central-based Protection Policies (which are management-plane centric) is a common task during Nutanix environment upgrades. This migration involves a " handoff " where the responsibility for snapshots and replication shifts from the local Cerebro service on the cluster to the global orchestration provided by Prism Central.
The primary risk during this migration is the creation of a " protection gap. " If an administrator deletes the legacy snapshots immediately after assigning a new policy, and that new policy has not yet successfully completed its first replication cycle, the virtual machine is effectively unprotected. If a disaster occurs at that exact moment, there would be no valid recovery points at the destination site to restore from. Nutanix best practice dictates that legacy artifacts must be preserved until the new system is verified as operational. Once the first recovery point for the VM appears in the Prism Central " Recovery Points " tab, it confirms that the new Protection Policy has successfully captured the VM ' s state and replicated it to the recovery AZ. At this stage, the legacy snapshots in the Protection Domain become redundant and can be safely deleted to reclaim storage space without compromising the organization ' s ability to meet its Recovery Point Objective (RPO) and Recovery Time Objective (RTO).
64. Frage
Which log file should an administrator review to ensure consistent connectivity stability between primary and remote disaster recovery sites?
Antwort: D
Begründung:
The Nutanix architecture relies on specialized services running on each Controller VM (CVM) to handle specific cluster operations. The " Cerebro " service is the primary engine responsible for data protection and replication tasks across the Nutanix cluster. It manages recovery points, snapshot schedules, and the actual transfer of data between the local cluster and remote sites. Consequently, the cerebro.INFO log file is the most vital resource for an administrator troubleshooting replication health or site-to-site connectivity. This log records critical events such as the start and completion of replication jobs, handshake failures between clusters, and timeout errors during snapshot transfers. If an administrator notices that replication is " hung " or failing consistently, cerebro.INFO provides the granular detail needed to see if the issue is a network timeout, a remote service unavailability, or a metadata synchronization error. Reviewing this log helps ensure that the connection stability is maintained and that any deviations in replication performance are identified before they impact the Recovery Point Objective (RPO). Other logs like genesis.out (Option B) are more focused on service startup and configuration rather than the ongoing health of the BCDR replication stream.
65. Frage
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