VCP-DCV Configure and Manage vSphere Storage Practice Test 2 — 15 Questions

Question 1

Match each VMware acronym to its full name.

Question 2

Match each vSphere object to its maximum supported size (vSphere 7).

Question 3

An administrator is configuring a vSAN cluster with all-flash capacity. The cluster uses RAID-5 erasure coding with a policy of 'Number of failures to tolerate = 1' (PFTT=1). The administrator wants to minimize storage overhead while ensuring availability. Which vSAN storage policy setting should be used?

Accepted Answer

Set 'Primary level of failures to tolerate' to 1 and 'Primary level of failures to tolerate method' to 'RAID-5 (Erasure Coding)'. For all-flash vSAN, RAID-5/6 erasure coding is recommended. With PFTT=1, RAID-5 requires only 1 parity component, minimizing overhead. Option C is correct. Option A (RAID-1 mirroring) would use more capacity. Option B (RAID-6) is for PFTT=2 and adds more overhead. Option D (no redundancy) is not fault tolerant.

Answer

Set 'Primary level of failures to tolerate' to 1 and 'Primary level of failures to tolerate method' to 'RAID-1 (Mirroring)'

Answer

Set 'Primary level of failures to tolerate' to 2 and 'Primary level of failures to tolerate method' to 'RAID-6 (Erasure Coding)'

Answer

Set 'Primary level of failures to tolerate' to 0

Question 4

A company is deploying a high-performance database workload on vSphere. The storage array supports NVMe over RDMA (NVMe-oF) and iSCSI. The workload requires extremely low latency and high IOPS. The network is dedicated 25 Gbps Ethernet with RoCE v2 support. Which storage protocol should be recommended, and why?

Accepted Answer

NVMe over RDMA, because it provides direct memory access and lower CPU overhead. NVMe over RDMA leverages RDMA for lower latency and higher throughput compared to iSCSI over TCP. Option A is correct. Option B (iSCSI) has higher latency due to TCP overhead. Option C (FC) requires additional hardware. Option D (NFS) is file-level and adds more overhead.

Answer

NFS, because it supports advanced features like Storage DRS

Answer

Fibre Channel, because it is the fastest protocol available

Answer

iSCSI, because it is simpler to configure and does not require RDMA support

Question 5

A vSphere administrator has a VMFS6 datastore that is running low on space. The storage array has additional unallocated LUNs. The administrator attaches a new 2 TB LUN to the ESXi host. What is the correct procedure to increase the datastore capacity?

Accepted Answer

Use the 'Increase datastore capacity' wizard to add the LUN as an extent. VMFS6 supports online extension by expanding the extent. Option B is correct. Option A (migrating VMs) is unnecessary. Option C (unmount and extend) is not required. Option D (convert to VMFS5) is wrong and would lose data.

Answer

Unmount the datastore, expand the VMFS partition, then remount

Answer

Recreate the datastore with a larger block size and restore from backup

Answer

Create a new datastore on the LUN and use Storage vMotion to migrate VMs

Question 6

An administrator has configured Storage DRS on a cluster of datastores. The cluster includes both NFS and VMFS datastores. The administrator notices that Storage DRS recommendations are not being generated for some datastores. What is the most likely cause?

Accepted Answer

NFS datastores are not supported by Storage DRS. Storage DRS does not support NFS datastores unless they are on a NAS array with VAAI. Option D is correct. Option A (vSAN) is incorrect as vSAN has its own DRS. Option B (space utilization) would still generate recommendations. Option C (I/O metrics) would work if supported.

Answer

The datastore space utilization is below the threshold

Answer

The datastores are part of a vSAN cluster

Answer

I/O metrics are not enabled for the Storage DRS cluster

Question 7

A company is implementing VMware vVols with a VASA provider from a major storage vendor. The environment includes multiple ESXi hosts and a vCenter Server. After binding a virtual machine to a vVol, the administrator notices that the VM cannot power on. The storage status shows 'Not mounted'. What is the most likely cause?

Accepted Answer

The VASA provider is not registered on the ESXi host where the VM is being powered on. vVols require storage container binding per host. If the VASA provider is not properly registered on that host, the vVol cannot be mounted. Option A is correct. Option B (protocol endpoint) would affect all VMs. Option C (storage policy) would affect placement, not power-on. Option D (vCenter) does not affect direct mount.

Answer

The vCenter Server is not connected to the VASA provider

Answer

The protocol endpoint is not reachable from the ESXi host

Answer

The storage policy does not include the correct capability

Question 8

An ESXi host has an NFS datastore mounted from a NAS array. The administrator wants to enable hardware acceleration (VAAI) for the datastore. Which requirement must be met?

Accepted Answer

The NAS array must support NFSv3 and VAAI primitives. VAAI for NFS requires the NAS array to support NFSv3 (or v4.1) and implement the VAAI primitives. Option C is correct. Option A (iSCSI) is block, not NFS. Option B (software FCoE) is unrelated. Option D (VMFS6) is a local filesystem.

Answer

The NAS array must present the LUN as an iSCSI target

Answer

The datastore must be formatted as VMFS6

Answer

The ESXi host must have a software FCoE adapter configured

Question 9

An administrator is troubleshooting performance issues on a VMFS datastore hosting SQL Server VMs. Storage I/O Control (SIOC) is enabled, but the administrator notices that congestion is detected but no throttling is applied. What could be the reason?

Accepted Answer

The SIOC congestion threshold is set too high. SIOC throttles only when there is congestion and the SIOC queue depth threshold is exceeded. If the threshold is set too high, throttling may not activate. Option B is correct. Option A (disabled) would not detect congestion. Option C (wrong) about stats interval. Option D (deduplication) is irrelevant.

Answer

The datastore is deduplicated

Answer

SIOC is disabled on the datastore

Answer

The host has exceeded the maximum number of concurrent I/Os

Question 10

An administrator is configuring persistent memory (PMem) for a critical database VM. The host has 512 GB of Intel Optane PMem. The VM must be able to vMotion while PMem is used. Which configuration meets this requirement?

Accepted Answer

Add a vPMem device to the VM and ensure the destination host has compatible PMem. vMotion with PMem requires that the PMem is presented as a vPMem (virtual persistent memory) and the destination host has compatible PMem capacity. However, vMotion of VMs with PMem is only supported if the PMem is used as a vPMem disk in non-hardware passthrough mode. Option D is correct. Option A (hardware passthrough) prevents vMotion. Option B (NVDIMM) is another term. Option C (software emulation) is not recommended.

Answer

Use NVDIMM labels and create a datastore for PMem

Answer

Configure the VM to use PMem in hardware passthrough mode

Answer

Emulate PMem using SSD-backed virtual disks

Question 11

An ESXi host is connected to an iSCSI storage array using software iSCSI initiator. The administrator has configured two NICs for iSCSI traffic. During setup, the administrator selects 'Round Robin' as the path policy for the storage device. What is the benefit of this path policy?

Accepted Answer

It load balances I/O across all active paths. Round Robin policy distributes I/O across all active paths, improving load balancing. Option A is correct. Option B (poor) is false. Option C (fixed) is different. Option D (MRU) is not load balancing.

Answer

It uses a single path until failure, then switches to another

Answer

It minimizes latency by always using the path with lowest latency

Answer

It provides the highest performance for all workloads

Question 12

Which TWO statements are true regarding vSAN deduplication and compression?

Accepted Answer

They are disabled by default on new vSAN clusters. Deduplication and compression are enabled on a per-disk group basis and require flash cache. They operate at the disk group level. Option A is correct (SSD capacity layer required). Option C is correct (disabled by default). Option B is wrong because they work at disk group level, not cluster. Option D is wrong because they are not supported for RAID-1 only (they work with erasure coding too). Option E is wrong because compression can be used without dedup.

Answer

They are enabled at the vSAN cluster level

Answer

They can only be used with RAID-1 mirroring policies

Answer

Compression can be enabled independently of deduplication

Question 13

Which THREE components are required to configure Storage DRS affinity and anti-affinity rules?

Accepted Answer

Datastores. Storage DRS affinity rules require datastore clusters, individual datastores, and virtual machines. Option A (datastore cluster) is where rules are defined. Option D (virtual machines) are the targets. Option E (datastores) are used as partners. Option B (resource pools) are not used. Option C (hosts) are not part of storage DRS rules.

Answer

A resource pool

Answer

An ESXi host

Question 14

Which TWO conditions require increasing the VMFS heap size on an ESXi host?

Accepted Answer

The host is connected to many VMFS datastores (e.g., 64). VMFS heap is used to track open file descriptors. Large number of VMs (option B) and high datastore count (option D) require heap increase. Option A (large VMDK) may require large files but not heap. Option C (snapshots) increase file count but not necessarily heap. Option E (vSAN) does not use VMFS.

Answer

A virtual machine has a VMDK larger than 2 TB

Answer

The host is part of a vSAN cluster

Answer

The host has many snapshots per virtual machine

Question 15

Refer to the exhibit. An administrator runs the 'esxcli storage core device list' command and sees the output. The storage array is an active-passive array with ALUA. The current path selection policy is set to Fixed with no preferred path. What is the consequence of this configuration?

Accepted Answer

I/O may be sent to a non-optimized path, causing higher latency. With an active-passive ALUA array, using Fixed policy with no preferred path means the host may not automatically switch to the active path, causing I/O to potentially go through the passive path (if it is accessible but not optimized). Option B is correct. Option A is wrong because only one path is active at a time. Option C is wrong because ALUA is supported. Option D is wrong because RDM is irrelevant.

Answer

The I/O is load-balanced across all four paths

Answer

ALUA is not supported, so the host will use only one path

Answer

The device cannot be used for VMDKs, only for RDM