3V0-23.25日本語認定対策、3V0-23.25復習過去問

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VMware 3V0-23.25 Exam Syllabus Topics:

Section	Weight	Objectives
vSAN Deployment and Configuration	25%	- Advanced configuration 1. Stretched cluster and fault domains 2. Encryption and security settings 3. File services and iSCSI services - Cluster deployment and expansion 1. Disk group configuration and optimization 2. Node addition and replacement
Performance Optimization and Monitoring	20%	- Monitoring and troubleshooting 1. Log analysis and error identification 2. vSAN performance views and metrics 3. Aria Operations integration - Performance tuning 1. I/O limit and QoS configuration 2. Cache and capacity tier optimization 3. Resiliency and performance balance
Storage Lifecycle Management	15%	- Compliance and health checks 1. Configuration drift detection 2. Hardware compatibility and validation - Lifecycle management with SDDC Manager 1. Update and upgrade workflows 2. Firmware and driver management
Disaster Recovery and Business Continuity	10%	- vSphere Replication configuration - Failover and failback operations - Site Recovery Manager integration
Advanced Storage Solutions	10%	- Storage for Kubernetes workloads - Multi-cloud storage management - External storage integration
VMware Cloud Foundation Storage Architecture and Design	20%	- Storage Policy Based Management (SPBM) 1. Policy design and compliance 2. Policy mapping and inheritance - vSAN Architecture in VCF Environment 1. Storage domains and workload domain integration 2. I/O path and data flow design 3. vSAN OSA and ESA differences and use cases

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VMware Advanced VMware Cloud Foundation 9.0 Storage 認定 3V0-23.25 試験問題 (Q13-Q18):

質問 # 13
A VI Admin creates a 40 TB Virtual Machine on a newly deployed VCF 9.0 Workload Domain running vSAN Express Storage Architecture (ESA).
```
[Storage Policy Rule Set: Tier1-Database]
FailuresToTolerate: 2 (RAID-6)
ErasureCoding: Enabled
```
How does the ESA I/O pipeline handle standard Write Operations differently than OSA, specifically regarding the "RAID-6 Write Penalty"?

A. ESA disables standard NVMe buffers and writes the RAID-6 data directly to the physical storage pool using the hostd agent, while OSA used the VMkernel SCSI stack.
B. OSA handles RAID-6 efficiently by offloading the parity calculation to the cache SSD, whereas ESA is forced to use the Host CPU, creating a new bottleneck.
C. OSA suffers a massive "Read-Modify-Write" penalty for RAID-6 because it must read old data to calculate new parity. ESA uses a log-structured "Append-Only" architecture; it writes new data to fresh blocks instantly without reading the old blocks, effectively giving RAID-6 policies the exact same write performance as RAID-1.
D. ESA requires the VMDK to be configured as a physical Raw Device Mapping (RDM) to bypass the DOM layer for RAID-6 workloads.

正解：C

質問 # 14
A VCF Architect is using the SDDC Manager API to deploy a massive "Shared Witness" topology.
The goal is to support 40 independent 2-Node vSAN ROBO clusters using a single, large Witness Appliance located in the Management Domain.
```
# SDDC Manager API Specification
{
"witnessSpec": {
"hostname": "Shared-Witness-01",
"size": "Extra-Large",
"max_components": 60000
},
"targetClusters": [ "ROBO-01", "ROBO-02", ... "ROBO-40" ] }
```
Which of the following statements accurately describe the architectural constraints and capabilities of the VCF Shared Witness feature? (Select all that apply.)

A. Shared Witness requires SDDC Manager to deploy the appliance directly onto AWS EC2 instances, as on-premises VCF datastores cannot support the combined IOPS load.
B. Shared Witness is strictly supported for standard 2-Node ROBO configurations; it cannot be used to consolidate witnesses for full 3+3 node Stretched Clusters.
C. All 40 ROBO clusters mapped to the Shared Witness must be running the exact same vSAN Architecture (either all OSA or all ESA) and identical ESXi versions to maintain CMMDS compatibility.
D. If the single Shared Witness appliance crashes, all 40 ROBO clusters will immediately suffer a datastore lockout and the edge VMs will become Inaccessible.
E. A single "Extra-Large" Shared Witness appliance can support up to 64 distinct 2-Node clusters, consolidating up to 64,000 metadata components into one VM.

正解：B、C、E

質問 # 15
A Compliance Auditor is reviewing the security posture of an external NAS cluster integrated into a VCF environment for cheap, massive capacity. The NAS is connected using the NFS v3 protocol.
The auditor observes the YAML configuration for the datastore connection defined by the DevOps team:
```
# Datastore Definition
kind: Datastore
metadata:
name: archive-nas-01
spec:
type: NFS
remoteHost: 10.10.10.50
remotePath: /export/audit_logs
security:
secType: sys
# Kerberos: Disabled
```
Which TWO security limitations or vulnerabilities are inherently introduced by using NFS v3 for this external capacity compared to native vSAN? (Choose 2.)

A. NFS requires enabling Promiscuous Mode on the NSX Distributed Virtual Switch, creating a network security vulnerability.
B. The external NAS disables vSphere High Availability (HA) on the cluster, meaning a host failure will leave data permanently locked.
C. All data traversing the network between the ESXi hosts and the NFS array is transmitted in unencrypted cleartext.
D. NFS v3 (secType: sys) relies entirely on the client IP address for authentication, meaning a rogue server spoofing the ESXi host's IP on that subnet could mount the share and read the audit logs.
E. NFS v3 utilizes VMFS-6 distributed locking, which forces the ESXi hypervisor kernel to expose root certificates to the external NAS.

正解：C、D

質問 # 16
An administrator has been tasked with suggesting storage models for a new VMware Cloud Foundation (VCF) Private Cloud. The following information has been provided:
* All existing implementations of VMware vSphere use the existing third-party block-based storage solution.
* The block-based storage solution only has sufficient scale, capacity and IOPS to cater for the new workload storage requirements.
* There is a dedicated and highly resilient storage area network connecting hosts to the provided block-based storage.
* There are 5 existing hosts with enough CPU and RAM resources and resilient Host Bus Adapters (HBAs) to cater for the new workload resource requirements only.
* There is sufficient budget to purchase some hardware, however the solution must re-use the existing hardware where possible.
The administrator suggests the following high-level solution:
* Single VCF Instance with a single Workload Domain.
* Deploy 4 new servers to create a Management Domain.
* Repurpose the 5 existing servers to create a single cluster in the Workload Domain.
Which two storage models should the administrator recommend? (Choose two.)

A. iSCSI should be the supplemental storage solution for the VCF Workload Domain.
B. iSCSI should be the principal storage solution for the VCF Management Domain.
C. Fibre Channel should be the principal storage solution for the VCF Workload Domain.
D. VMware vSAN should be the principal storage solution for the VCF Management Domain.
E. VMware vSAN should be the principal storage solution for the VCF Workload Domain.

正解：C、D

解説：
The workload domain should use Fibre Channel as principal storage because the existing five hosts already have resilient HBAs and are connected to a dedicated, highly resilient storage area network.
The third-party block storage is also stated to have sufficient scale, capacity, and IOPS for the new workload requirements only, so it should be reused where it directly fits: the VI workload domain.
VMware Cloud Foundation supports Fibre Channel as both principal and supplemental storage for VI workload domains. The management domain should use VMware vSAN as principal storage because the four new servers are being purchased for the management domain, and the existing block storage is not sized for management workloads. vSAN is a native VCF principal storage model for management domains and provides automated deployment, policy-based management, lifecycle integration, and integrated operations. iSCSI is not the right answer because the scenario describes Fibre Channel SAN connectivity and HBAs, not an iSCSI design. vSAN for the workload domain would also fail the reuse requirement because it would ignore the existing block storage investment. Reference topics: Principal Storage, Fibre Channel Storage Model, vSAN Storage Model, Management Domain Storage.

質問 # 17
A VI Admin is defining the storage topology for a new set of general-purpose utility servers (DNS, Domain Controllers, File Servers) within a VCF Workload Domain.
The company wants to maximize the effective capacity of the NVMe drives in their vSAN ESA cluster.
```
# Proposed SPBM Configuration
Name: General-Purpose-ESA
FailuresToTolerate: 2 failures - RAID-6 (Erasure Coding)
StripeWidth: 1
Compression: Enabled
```
Which of the following statements correctly evaluate the suitability and operational behavior of applying this policy to general-purpose servers on vSAN ESA? (Select all that apply.)

A. RAID-6 combined with Compression provides the lowest possible Cost per Gigabyte (highest efficiency) while maintaining high availability, making it perfectly suited for general-purpose Tier-2 workloads.
B. General-purpose servers perform highly random read/write patterns that will overwhelm the parity calculation engine in RAID-6, causing massive CPU spikes.
C. vSAN ESA will automatically downgrade the RAID-6 policy to RAID-1 if the workload experiences more than 50,000 IOPS.
D. vSAN ESA Adaptive RAID-6 requires a minimum of 6 physical fault domains, meaning this policy will prevent the VMs from provisioning if the cluster has only 5 hosts.
E. The compression engine operates on a fixed 4KB block size, offering highly predictable space savings for OS and application binaries common to general-purpose VMs.

正解：A、D、E

質問 # 18
......

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3V0-23.25復習過去問: https://www.xhs1991.com/3V0-23.25.html