3V0-23.25試験対策書 & 3V0-23.25認定資格試験問題集

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VMware 3V0-23.25 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Storage Optimization and Troubleshooting	25%	- Troubleshoot common storage issues in VMware Cloud Foundation - Monitor and optimize storage performance and capacity - Perform health checks and implement remediation
Topic 2: Integration and Automation	20%	- Use APIs and command-line tools for storage management - Integrate storage components with other VMware Cloud Foundation services - Automate storage provisioning and management tasks
Topic 3: Storage Configuration and Management	30%	- Configure and manage vSAN in a VMware Cloud Foundation environment - Implement and manage storage policies - Manage data services (deduplication, compression, encryption)
Topic 4: Storage Architecture and Design	25%	- Integrate external storage arrays with VMware Cloud Foundation - Design vSAN storage solutions for VMware Cloud Foundation - Plan for storage capacity, performance, and availability requirements

>> 3V0-23.25試験対策書 <<

3V0-23.25認定資格試験問題集 & 3V0-23.25資格関連題

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VMware Advanced VMware Cloud Foundation 9.0 Storage 認定 3V0-23.25 試験問題 (Q76-Q81):

質問 # 76
A SOC Analyst is engaged after a VCF SDDC Manager automated capacity alert triggered at
2:00 AM.
```
[SDDC Manager - Workload Domain Threshold Alert]
Cluster: WLD01-Cluster
vSAN Consumed: 83%
Host Rebuild Reserve: Breached
Action Initiated: Proactive Write Throttling
[Architecture Diagram Snapshot]
4-Node vSAN OSA All-Flash Cluster.
No physical disks have failed. No maintenance windows are active.
```
How does the interaction between the cluster topology size and the "Host Rebuild Reserve" logic explain this capacity breach, and what are the operational impacts? (Select all that apply.)

A. Proactive Write Throttling deliberately introduces extreme latency to incoming VM write requests (backpressure) to prevent the cluster from hitting 100% and completely locking up.
B. In a small 4-node cluster, the Host Rebuild Reserve must reserve exactly 25% of the total capacity (equivalent to one entire host) to ensure FTT=1 data can be rebuilt if a host dies.
C. The Rebuild Reserve logic only applies to clusters larger than 8 nodes; this alert is a false positive generated by a misconfigured SDDC Manager profile.
D. Because 83% + 25% reserve > 100%, the cluster has mathematically run out of space to tolerate a host failure, triggering the breach alert despite having 17% absolute free space on the drives.
E. To resolve this without deleting data, the analyst must initiate the "Scale-Out" workflow in SDDC Manager to add a 5th host, which recalculates the Host Rebuild Reserve from 25% down to 20%.

正解：A、B、D、E

質問 # 77
A SOC Analyst is investigating a massive CPU utilization spike on a VCF 9.0 ESXi host immediately after a Supplemental NFS v4.1 Datastore was mounted. The principal storage is vSAN ESA.
```
[Log Snippet: vmkernel.log - ESXi Host]
2026-11-20T11:00:00Z INFO tcp_ip - [NFS] IP Fragmentation event
detected.
2026-11-20T11:00:05Z WARN cpu_sched - [Hostd] CPU 01 saturation: 99%
(Processing network interrupts).
```
The Physical Network switch is configured for standard MTU 1500. What is strictly causing this configuration to cripple the ESXi host CPU, assuming the storage traffic is high volume? (Select all that apply.)

A. The VMkernel port used for the NFS datastore was mistakenly configured with MTU 9000 (Jumbo Frames).
B. The fragmentation and subsequent reassembly of massive NFS payload data consumes astronomical amounts of ESXi CPU cycles (Interrupt Requests), starving the hostd management agent and the vSAN DOM of compute resources.
C. The ESXi host automatically triggers a "Deep Rekey" operation when MTU mismatches are detected to ensure the fragmented packets remain encrypted.
D. The CPU is consumed by the Top-of-Rack switch's native ASIC routing protocol.
E. Because the host is sending 9000-byte packets and the physical switch only supports 1500-byte packets, the ESXi network stack is forced to violently fragment every storage packet into 6 smaller packets.

正解：A、B、E

質問 # 78
A VCF Architect is designing the Supplemental Storage topology for a hybrid-cloud implementation. The design uses VMFS Datastore Clusters with Storage DRS (SDRS).
```
# SPBM Policy: "DB-Gold-Policy"
Tag: "Gold-Tier-FC"
Datastore Cluster: "DS-Cluster-Gold" (LUNs 1, 2, 3)
# VM Anti-Affinity Rule: "DB-App-Separation"
VMs: [DB-Node-01, DB-Node-02]
Rule Type: Intra-VM Anti-Affinity (Separate VMDKs)
```
To meet compliance, the Database VMDK and the Log VMDK for the same VM MUST reside on physically different LUNs.
How does the deep integration between SPBM tagging, SDRS, and VMFS LUN presentation execute this complex compliance requirement? (Select all that apply.)

A. The "Intra-VM Anti-Affinity" rule tells SDRS to actively separate the VMDKs. It will place the DB- VMDK on LUN 1 and the Log-VMDK on LUN 2 during initial provisioning.
B. If LUN 1 fills up, SDRS will move the DB-VMDK to LUN 3, but it will NOT move it to LUN 2, because doing so would violate the anti-affinity rule with the Log-VMDK already on LUN 2.
C. Storage DRS executes a Deep Rekey on the Log VMDK to ensure cryptographic separation matches the physical separation of the LUNs.
D. The "Gold-Tier-FC" tag ensures that SDRS only considers LUNs 1, 2, and 3 for placement, ignoring cheaper SATA LUNs that might have more free space.
E. SPBM automatically creates separate sub-folders on a single VMFS datastore to simulate LUN separation if the anti-affinity rule cannot be met physically.

正解：A、B、D

質問 # 79
A VCF Architect is designing the automated lifecycle management (LCM) workflow for a massive
48- node vSAN ESA cluster using Dell ReadyNodes.
The design integrates vSphere Lifecycle Manager (vLCM) with the OpenManage Integration for VMware vCenter (OMIVV) Hardware Support Manager (HSM).
```
# vLCM Cluster Image JSON Spec
"image": {
"esx_version": "8.0 U2",
"vendor_addon": "Dell_Customization",
"hsm_package": "OMIVV_Firmware_Baseline_v4"
}
```
How does the vCenter HCL Database interact with this automated vLCM firmware remediation loop? (Select all that apply.)

A. vLCM ignores the vSAN HCL database entirely when a Hardware Support Manager is present, relying solely on the OEM vendor's internal certification matrix.
B. Before applying the image, vLCM queries the active vSAN HCL Database to validate that the specific NVMe firmware contained in the "OMIVV Baseline" is officially certified for vSAN ESA 8.0 U2.
C. The integration requires disabling the vSAN Health Service so that the OMIVV hardware manager can assume absolute control over the RAID controller configurations.
D. If the HCL database determines the HSM firmware baseline is incompatible, the SDDC Manager compliance pre-check will block the remediation task to prevent corrupting the storage pool.
E. Updating the HCL database inside vCenter automatically flashes the new firmware onto the physical Dell servers during the next standard maintenance window.

正解：B、D

質問 # 80
An administrator just built a new workload domain including a vSAN ESA cluster. The architecture design included the use of memory tiering and a specific smaller NVMe device has been installed in each ESX host for this purpose.
When looking in the vSphere UI, the administrator notices that the device intended to be used for memory tiering has been claimed by vSAN.
What action should be taken on each host to achieve the desired configuration?

A. Change vSAN disk claiming from automatic to manual and sequentially reboot each ESX host of the cluster after putting them in maintenance mode using the "Ensure Accessibility" option.
B. Boot the host one time with the tiering device removed, then shut down again. Reconnect the tiering device and boot the host.
C. Remove the device from vSAN performing a full data migration and configure that device for memory tiering.
D. After turning on the LED on the memory tiering device, hot remove it from the ESX host; vSAN will rebuild the required objects.

正解：C

解説：
The device has already been claimed by vSAN, so it is now part of the vSAN ESA storage pool. It must be removed from vSAN through a controlled device-removal workflow before it can be repurposed for memory tiering. The correct method is to remove the device from vSAN using Full Data Migration.
This evacuation mode migrates data from the device to other eligible devices or hosts so that objects remain protected and compliant where possible. After the device is safely removed from the vSAN storage pool, it can be configured for memory tiering. Physically removing or hot-removing the device is unsafe because vSAN may still have components on it. Booting without the device is also not a supported configuration workflow. Changing disk claiming behavior and rebooting does not safely remove existing components from the already claimed device. vSAN ESA uses a storage pool model, so claimed NVMe devices contribute capacity and performance; a device intended for another purpose must be explicitly evacuated and removed before reuse. Reference topics: vSAN ESA Storage Pools, Device Claiming, Remove Storage Pool Device, Full Data Migration, Memory Tiering.

質問 # 81
......

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