VCP-DCV Practice Test 17 — 15 Questions

Question 1

A vSphere administrator is observing that a VM with a 2 TB thin-provisioned virtual disk on a VMFS6 datastore is reporting 1.5 TB of used space inside the guest OS, but the datastore shows only 800 GB consumed by the VM. What is the most likely cause of this discrepancy?

Choose an answer to begin — your selection is scored in the full session.

Accepted Answer

The virtual disk is thin-provisioned, so only the actual written blocks consume space on the datastore.. The discrepancy is because the virtual disk is thin-provisioned. Thin provisioning means the virtual disk file (VMDK) on the datastore only occupies space for blocks that have been written to by the guest OS, not the full allocated size. The guest OS reports 1.5 TB of used space because it sees the logical file system usage, but the datastore only shows 800 GB consumed because that is the actual physical storage used by the written blocks.

Answer

The virtual disk needs to be defragmented to reclaim space.

Answer

The VM has a snapshot that is consolidating, reducing storage usage.

Answer

The virtual disk is thick-provisioned lazy zeroed, which delays allocation.

Question 2

A vSphere administrator is managing a cluster with vLCM and receives a notification that a new ESXi patch is available. The administrator updates the desired image to include the patch and attempts to remediate, but the remediation fails with 'Cannot retrieve software depots'. What could be the issue?

Accepted Answer

The software depot URL in the image is incorrect or unreachable.. The error 'Cannot retrieve software depots' indicates that vLCM is unable to reach the software depot URL specified in the desired image. This typically occurs when the URL is incorrect, the depot server is down, or network/firewall rules block access to the depot. Since the administrator updated the image and remediation fails at the depot retrieval stage, the most direct cause is an unreachable or misconfigured depot URL.

Answer

The hosts cannot communicate with the vCenter Server.

Answer

The image validation failed due to missing dependencies.

Answer

The desired image was not saved after adding the patch.

Question 3

Which vSphere component is responsible for managing the lifecycle of ESXi hosts, including patching and upgrading?

Accepted Answer

vSphere Lifecycle Manager. vSphere Lifecycle Manager (vLCM) is the correct component because it is specifically designed to manage the lifecycle of ESXi hosts, including patching, upgrading, and firmware/driver updates. It uses desired-state management to ensure hosts conform to a specified image or baseline, automating the entire update process across clusters.

Answer

Host Profiles

Answer

Auto Deploy

Answer

vSphere Distributed Resource Scheduler

Question 4

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 an all-flash vSAN cluster with PFTT=1, RAID-5 erasure coding provides the lowest storage overhead (approximately 1.33x) while still tolerating one failure. Setting the primary level of failures to tolerate to 1 and the method to RAID-5 (Erasure Coding) achieves the administrator's goal of minimizing overhead while maintaining availability.

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 5

An administrator is designing a new vSphere environment and wants to minimize manual effort for patching and upgrade. Which lifecycle management approach should they choose for vSphere 8 clusters?

Accepted Answer

Enable vLCM for all clusters.. vSphere Lifecycle Manager (vLCM) with desired-state image management is the recommended approach in vSphere 8 for minimizing manual patching and upgrades. Enabling vLCM for all clusters lets administrators define a single image (base ESXi version plus firmware and drivers) and remediate hosts to match it, automating compliance across the cluster. This reduces manual effort compared to legacy baselines.

Answer

Use vSphere baselines for granular control.

Answer

Use vSphere Update Manager for standalone hosts.

Answer

Use vLCM only for large clusters with more than 32 hosts.

Question 6

Which three factors influence the behavior of Network I/O Control (NIOC) when allocating bandwidth to different traffic types? (Choose three.)

Accepted Answer

Reservation per traffic type. Network I/O Control (NIOC) allocates bandwidth on a vSphere Standard or Distributed Switch based on three per-traffic-type settings: Reservation (B), which guarantees a minimum bandwidth in Mbps or Gbps that the traffic type can always use; Shares (C), which determine the relative priority for distributing any remaining bandwidth when the link is contended (e.g., High=100, Normal=50, Low=25 per active uplink); and Limit (D), which caps the maximum bandwidth the traffic type may consume. These three parameters together define how NIOC divides and prioritizes bandwidth among traffic types such as vMotion, iSCSI, and VM traffic. The total physical bandwidth (A) is not a configurable NIOC factor — it is the underlying capacity that reservations, shares, and limits act upon, and NIOC itself does not let you set it. The number of physical uplinks (E) affects aggregate capacity and teaming behavior, but NIOC allocation is driven by the per-traffic-type reservation, shares, and limit values, not by the uplink count.

Answer

The total physical bandwidth

Answer

The number of physical uplinks

Question 7

An administrator needs to apply a security patch to a vLCM-managed cluster. The patch is available as an ESXi image in the vSphere Lifecycle Manager depot. What is the correct procedure?

Accepted Answer

Create a new desired state image with the patch, validate, and remediate the cluster.. In a vLCM-managed cluster, the correct procedure to apply a security patch is to create a new desired state image that includes the patch from the vSphere Lifecycle Manager depot, validate the image against the cluster's hardware and software compatibility, and then remediate the cluster. This ensures all hosts are updated to the exact same image specification, maintaining consistency and compliance with the desired state.

Answer

Attach a patch baseline to the cluster and remediate.

Answer

Export the current image, add the patch, and import it to the cluster.

Answer

Use Quick Boot to apply the patch to each host individually.

Question 8

Which TWO actions can help reduce network latency for a latency-sensitive VM in a vSphere environment? (Choose two.)

Accepted Answer

Configure NetQueue on the physical NIC.. Option B is correct because NetQueue allows the physical NIC to use multiple receive queues and distribute network traffic across multiple CPUs, reducing per-packet processing latency and improving throughput for latency-sensitive workloads. Option C is correct because SR-IOV lets the VM bypass the virtual switch datapath by directly accessing a virtual function on the physical NIC, which significantly lowers latency and CPU overhead. Option A is incorrect because a standard vSwitch versus a distributed switch does not inherently reduce network latency; both are software-based datapaths. Option D is incorrect because jumbo frames reduce per-packet overhead and CPU utilization but do not directly lower latency, and they require end-to-end MTU consistency. Option E is incorrect because disabling TCP segmentation offload increases CPU overhead and can degrade, not improve, network performance.

Answer

Use a standard virtual switch instead of a distributed switch.

Answer

Enable jumbo frames on the virtual switch.

Answer

Disable TCP segmentation offload on the VM.

Question 9

Which two factors most directly influence vSphere NUMA scheduling decisions for a VM? (Choose two.)

Accepted Answer

Host NUMA node topology. Option A (Host NUMA node topology) is correct because vSphere's NUMA scheduler bases its placement decisions on the physical NUMA node layout of the ESXi host, including how many nodes exist, how many cores and how much memory each node contains, and the relative latency between nodes; a VM's vCPUs and memory are placed to keep them within a single node whenever possible. Option C (Number of vCPUs) is correct because a VM's vCPU count determines whether it can fit inside one NUMA node: if the vCPU count exceeds the cores in a single node, the VM becomes wide and vSphere must span multiple NUMA nodes, changing the scheduling behavior (and potentially enabling vNUMA). Option B is not a primary factor because a memory reservation affects admission control and whether memory is backed by reserved physical pages, not the NUMA placement logic itself. Option D is unrelated since a VM storage policy governs datastore placement and storage services such as IOPS limits or encryption, not CPU/memory NUMA scheduling. Option E is also unrelated because the virtual machine version (hardware compatibility level) determines available virtual hardware features, not how the NUMA scheduler places the VM's vCPUs and memory.

Answer

VM memory reservation

Answer

VM storage policy

Answer

Virtual machine version

Question 10

A company plans to upgrade the ESXi hosts in their vSphere cluster from version 7.0 Update 3 to 8.0 Update 1 using vSphere Lifecycle Manager (vLCM). The cluster currently uses baseline-based management. What is the recommended approach to prepare for this upgrade?

Accepted Answer

Migrate the cluster to image-based management.. vSphere Lifecycle Manager (vLCM) image-based management is the recommended approach for upgrading to vSphere 8.0 Update 1 because it provides a declarative, desired-state model for the entire cluster, including firmware and drivers via Hardware Support Manager. Baseline-based management is legacy and does not support the full vLCM feature set in 8.0. Migrating the cluster to image-based management before the upgrade ensures a clean, supported path.

Answer

Manually upgrade each host using an ISO file.

Answer

Create a new baseline group and attach it to the cluster.

Answer

Use vMotion to migrate all VMs to another cluster before upgrading.

Question 11

Which TWO statements about vCenter Single Sign-On (SSO) are true? (Choose two.)

Accepted Answer

It supports multiple identity sources such as Active Directory and LDAP. Option A is correct because vCenter Single Sign-On supports multiple identity sources, including Active Directory (integrated Windows authentication), LDAP, and local SSO identity sources, allowing authentication against different user directories. Option E is correct because SSO issues SAML 2.0 tokens that are used to authenticate and authorize users across vCenter services and other vSphere components, enabling single sign-on without re-entering credentials. Option B is not correct because SSO does not rely on Kerberos as its authentication mechanism; it uses SAML tokens and can use various identity sources, though Kerberos may be involved in some Active Directory scenarios, it is not the defining authentication method. Option C is not correct because SSO does not store user passwords in plaintext; credentials are handled securely and passwords are not stored in plaintext for authentication. Option D is not correct because SSO does not require a Windows Active Directory domain; it can function with local SSO users or other supported identity sources such as LDAP.

Answer

It uses Kerberos to authenticate users to vCenter Server

Answer

It stores user passwords in plaintext for faster authentication

Answer

It requires a Windows Active Directory domain to function

Question 12

Which TWO of the following are valid methods to restrict access to the ESXi host's Direct Console User Interface (DCUI) to authorized administrators only?

Accepted Answer

Enable lockdown mode and add only authorized administrators to the Exception Users list.. Option B is correct because enabling lockdown mode restricts direct host access (including the DCUI) so that only users on the Exception Users list—authorized administrators—can log in to the DCUI and other local management interfaces. Option D is correct because the advanced setting 'DCUI.Access' explicitly defines which local users are permitted to access the Direct Console User Interface, so setting it to a list of authorized users restricts DCUI access to exactly those accounts. Option A is not correct because SSH is a separate remote shell service and disabling it has no effect on DCUI access, which is a local console interface. Option C is not correct because the root user cannot simply be removed from the DCUI local users list in the manner described; DCUI access is controlled via lockdown mode and DCUI.Access, not by deleting root from a list. Option E is not correct because Active Directory integration and group policy do not provide a supported mechanism to disable the DCUI on an ESXi host.

Answer

Disable SSH access on the host to prevent remote DCUI access.

Answer

Remove the root user from the DCUI local users list.

Answer

Configure Active Directory integration and use group policy to disable DCUI.

Question 13

Which TWO actions are required to enable vSphere VM encryption? (Choose two.)

Accepted Answer

Configure a Key Management Server (KMS) or native key provider. vSphere VM encryption requires a key provider to supply the encryption keys, so option A is correct: you must configure a Key Management Server (KMS) or a vSphere Native Key Provider and add it to the vCenter Server before any VM can be encrypted. Option D is also correct because, after the key provider is trusted, you must actually apply encryption by assigning a VM encryption storage policy to the virtual machine (or enabling encryption on the VM), which triggers the encryption of the VM's files and disks. Option B is not required: SSH access to ESXi hosts is not used to manage encryption keys, since key management is handled through the KMS/Native Key Provider and vCenter. Option C is not required: vMotion remains fully supported with encrypted VMs and does not need to be disabled. Option E is not required: lockdown mode is a security hardening setting for host access and has no role in enabling VM encryption.

Answer

Enable SSH on each ESXi host to manage encryption keys

Answer

Disable vMotion on the cluster

Answer

Place the ESXi hosts in lockdown mode

Question 14

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

Accepted Answer

Datastores. Storage DRS affinity and anti-affinity rules are configured at the datastore-cluster level, so option E (a datastore cluster) is required because it provides the boundary within which the rules are defined and enforced. Option B (datastores) is correct because the rules themselves specify which datastores within that cluster the virtual machines should be kept together on (affinity) or kept apart from (anti-affinity). Option D (virtual machines) is correct because the rules are applied to VM-to-datastore relationships, meaning the VMs are the objects whose placement is being constrained. Option A (a resource pool) is not required, since resource pools govern CPU and memory allocation, not datastore placement. Option C (an ESXi host) is not required as a rule component, because Storage DRS rules operate on datastores and VMs within a datastore cluster rather than being defined per host.

Answer

A resource pool

Answer

An ESXi host

Question 15

Which THREE vSphere features directly contribute to performance and scaling of virtualized workloads? (Select THREE.)

Accepted Answer

vSphere vMotion. vSphere vMotion (A) is correct because it enables live migration of running VMs between hosts with no downtime, which supports performance and scaling by allowing workload redistribution and maintenance without service interruption. Storage I/O Control (B) is correct because it enforces per-VM or per-datastore I/O shares and limits during congestion, directly managing storage performance and preventing noisy-neighbor effects in scaled environments. vSphere DRS (C) is correct because it continuously balances CPU and memory load across hosts in a cluster using vMotion, directly improving performance and enabling horizontal scaling. Fault Tolerance (D) and vSphere HA (E) are not correct here because they primarily provide availability and rapid recovery from host failures, not direct performance or scaling optimization of virtualized workloads.

Answer

vSphere Fault Tolerance

Answer

vSphere HA