Online Access Free VMware.3V0-23.25.v2026-08-01.q100 Practice Test (Page 17)

3V0-23.25 Exam Question 76

A Storage Administrator is replacing a vSAN Witness Appliance for a Stretched Cluster that utilizes vSAN Data-at-Rest Encryption. The original Witness Appliance suffered an unrecoverable boot failure. The administrator deploys the new appliance via OVF and uses an automation script to configure the networking and encryption pre-requisites before running the vCenter "Change Witness" workflow.
```
# Cloud-Init / Automation Spec for New Witness
network:
vmk0: 10.10.10.150/24 (Management)
vmk1: 172.16.20.150/24 (Witness - MTU 1500)
static_routes: [ "192.168.0.0/16 via 172.16.20.1" ]
security:
kms_trust_establishment: "True"
host_key_retrieval: "Disabled (Metadata Only)"
```
How does the interaction between the encryption layer and the new Witness Appliance behave during this replacement process? (Select all that apply.)

A.Disabling "host_key_retrieval" on the Witness is a valid optimization because the Witness only uses standard VMFS for its storage, not the encrypted vSAN datastore.

B.When the DOM syncs metadata to the new Witness, the metadata is transmitted over the wire unencrypted unless Data-in-Transit encryption is also enabled.

C.The new Witness Appliance must establish trust with the Key Management Server (KMS), because even though it does not hold payload data, it stores encrypted metadata components.

D.The new Witness Appliance will require a "Deep Rekey" operation to generate a unique Disk Encryption Key (DEK) for its local cache device.

3V0-23.25 Exam Question 77

A VCF Deployment Specialist is troubleshooting a complex partition in a vSAN ESA cluster.
Following a vCenter restore from backup, the cluster split into 3 separate partition groups. The specialist uses Ruby vSphere Console (RVC) to dump the CMMDS cluster table:
```
[RVC Output: vsan.cluster_info ~cluster]
Partition Group 1: esx-01 (Master), esx-02 (Backup), esx-03
Partition Group 2: esx-04 (Master)
Partition Group 3: esx-05 (Master), esx-06
[root@esx-04:~] vmkping -I vmk2 192.168.10.1 (esx-01) -s 8972 -d
Response: sendto() failed: Message too long
```
Based on the RVC topology and vmkping output, which TWO configurations are directly causing this cluster segmentation? (Choose 2.)

A.The ESXi hosts esx-04 through esx-06 lost connectivity to the vSAN Data-in-Transit (DiT) Key Management Server, breaking the secure network channels.

B.esx-04 is placed in "vSAN Witness" mode, which automatically isolates it from standard data partition groups.

C.The restored vCenter Server pushed an outdated Unicast Agent table to the hosts, causing desynchronization in the cluster membership lists.

D.Network I/O Control (NIOC) is actively blocking the CMMDS traffic because the Shares are set to
"Low".

E.An MTU mismatch exists on the physical switch ports for esx-04, esx-05, and esx-06; the vSAN network requires 9000 MTU end-to-end, and jumbo frames are being dropped.

3V0-23.25 Exam Question 78

An Infrastructure Manager is investigating application lockups on a VCF 9.0 cluster hosting legacy databases on external iSCSI datastores.
The vSAN Performance View for the ESXi host shows severe backend CPU contention, and the physical ToR switches report link flapping on specific ports.
```
[vSAN / ESXi Performance View]
Metric: CPU Ready Time (High)
Metric: Storage Path Status (Flipping: Active -> Dead -> Active)
```
Which TWO statements accurately describe the symptoms and impact of "Path Thrashing" in this specific scenario? (Choose 2.)

A.The constant path flipping forces standard I/O into the VMkernel retry queues. This I/O stacking causes the SCSI queue depth to fill, leading to the application lockups observed by the users.

B.Path Thrashing is a beneficial vSAN feature that rapidly rotates I/O paths to evenly distribute the temperature of the NVMe drives.

C.Path Thrashing forces the ESXi host to enter Maintenance Mode automatically to isolate the failing hardware.

D.The constant UP/DOWN path flapping tricks the vSAN DOM into splitting the data packets into Micro- Stripe components, generating metadata bloat.

E.Path Thrashing occurs when a marginal network cable or switch port continuously cycles UP/DOWN; the ESXi Native Multipathing Plugin (NMP) consumes massive CPU cycles constantly recalculating path statuses and re-initiating iSCSI sessions.

3V0-23.25 Exam Question 79

A Compliance Auditor is validating that a newly provisioned VCF 9.0 environment meets strict data encryption and space-efficiency mandates. The environment uses vSAN ESA.
The auditor views the SPBM UI for the primary workload domain:
```
[Storage Policy Rule View: "Secure-DB-Policy"]
Failures To Tolerate: 1 (RAID-5)
Compression: Enabled
Encryption: (Inherited from Cluster Data-at-Rest)
```
How does vSAN ESA handle the interaction between Compression, Encryption, and SPBM granularity compared to legacy systems, and why is this sequence critical for data security and efficiency? (Select all that apply.)

A.vSAN ESA moves Compression into the SPBM policy layer, allowing the administrator to enable compression on highly compressible databases while disabling it on encrypted video files that cannot be compressed.

B.ESA performs compression via SPBM, but delegates encryption to the physical NVMe Self- Encrypting Drives (SED), meaning the data traverses the host bus unencrypted.

C.vSAN ESA strictly compresses the data *before* it encrypts the data at the DOM Client layer; encrypting first would turn the data into pseudo-random noise, destroying any potential for compression.

D.The SPBM configuration proves that ESA disables erasure coding (RAID-5) whenever encryption is enabled to prevent parity bit corruption.

E.Legacy vSAN OSA handled compression and encryption independently at the top of the stack, meaning there is no architectural performance difference compared to ESA.

3V0-23.25 Exam Question 80

A Compliance Auditor is reviewing an air-gapped VCF Workload Domain used for classified operations. The Customer Experience Improvement Program (CEIP) and vCenter internet access are permanently disabled.
The vSAN Health Check constantly reports "vSAN HCL DB is outdated".
```
[vSAN Cluster Configuration]
vSAN Edition: Enterprise Plus (vSAN 8.0 U2)
CEIP: Disabled
Internet Access: None (Air-gapped)
```
How must the administrator resolve this compliance alert in this specific restricted environment?

A.SDDC Manager automatically bypasses the air-gap by establishing a secure dark-fiber connection to the VMware cloud to stream the HCL database directly into ESXi memory.

B.The administrator must download the all.json HCL file from the VMware public portal onto an internet-connected workstation, transfer it to the internal network, and manually upload it via the
"Update from file" option in the vCenter vSAN Health UI.

C.The update occurs automatically whenever the administrator applies a new vSphere Lifecycle Manager (vLCM) cluster image, as the latest HCL JSON is hard-coded into the ESXi installation ISO.

D.The administrator must disable the "Controller Firmware" health checks in Skyline Health, as HCL updates are strictly unsupported in non-CEIP environments.

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3V0-23.25 Exam Question 76

3V0-23.25 Exam Question 77

3V0-23.25 Exam Question 78

3V0-23.25 Exam Question 79

3V0-23.25 Exam Question 80

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