VCP-DCV Practice Test 11 — 15 Questions

Question 1

Which THREE factors should be considered when sizing a host cluster for a VDI environment with 1000 desktops? (Choose three.)

Accepted Answer

Storage IOPS capacity for boot storms.. Option C is correct because boot storms in a 1000-desktop VDI environment generate massive concurrent storage I/O, so the datastore's IOPS capacity (and latency) must be sized to absorb peak demand without degrading performance. Option D is correct because VDI workloads are CPU-intensive, so the vCPU-to-physical-core ratio must be kept within acceptable limits (typically 4:1 to 8:1 depending on workload) to prevent CPU contention and ready time. Option E is correct because memory is usually the most constrained resource in VDI; the memory overcommitment ratio and per-host available memory must be calculated so that each desktop receives its required working set without excessive swapping or ballooning. Option A is not a sizing factor but a design/operational requirement for cluster mobility, and Option B, while relevant to performance tuning, is not a primary capacity-sizing factor for the cluster.

Answer

vMotion compatibility between hosts.

Answer

NUMA alignment of virtual desktops.

Question 2

A vSphere administrator manages a vLCM cluster with a desired image. The administrator wants to add a new vendor add-on to the image. Before applying the change, the administrator needs to understand the impact. What happens when a vendor add-on is added to the desired image?

Accepted Answer

The cluster becomes non-compliant, and remediation is required to apply the add-on to all hosts.. When a vendor add-on is added to the desired image, the cluster's target state changes. Hosts no longer match the desired image and are marked non-compliant. Remediation is required to apply the add-on to all hosts. This ensures consistent software across the cluster and is the standard vLCM workflow.

Answer

The add-on is applied only to the host that is currently in maintenance mode.

Answer

The add-on is stored in the vLCM depot but not applied until the next ESXi upgrade.

Answer

The add-on is automatically installed on all hosts without remediation.

Question 3

An administrator is planning a storage upgrade for a vSphere cluster. The cluster currently uses VMware vSAN as the primary datastore. The administrator wants to add capacity to the vSAN datastore without adding additional hosts. Which action should the administrator take?

Accepted Answer

Add a new disk group on each host with additional capacity disks. Adding a new disk group on each host with additional capacity disks directly increases vSAN datastore capacity without requiring host replacement. This method allows you to add new capacity disks while preserving existing disk groups and data placement policies. Option A is incorrect because replacing existing disks with larger ones, while possible, typically requires data evacuation or is more disruptive, and it is not the recommended approach when disk slots are available. Option B is invalid because disk groups are per-host; combining disks across hosts is not supported. Option D does not increase vSAN capacity and introduces a different datastore type.

Answer

Replace existing disks in each host with larger capacity disks and claim them to the same disk group

Answer

Combine disks from different hosts into a single disk group

Answer

Add a new VMFS datastore and use Storage vMotion to move VMs

Question 4

A vSphere administrator wants to restrict direct console access to an ESXi host to authorized administrators only, without interrupting running virtual machines. Which feature should the administrator enable?

Accepted Answer

Lockdown mode. Lockdown mode restricts direct console access to an ESXi host to only users with administrator privileges, while allowing running VMs to continue unaffected. It enforces that all management access must go through vCenter Server, enhancing security without disrupting workloads.

Answer

Enable DRS

Answer

Configure a host profile

Answer

Disable SSH service

Question 5

A company runs a three-tier application on vSphere 7.0. The web tier uses VLAN 100, app tier VLAN 200, and database tier VLAN 300. Each tier is on a separate port group on a vSphere distributed switch. The environment uses Network I/O Control (NIOC) with shares set to: Web (50), App (30), Database (20). The physical uplinks are two 10 GbE NICs in a team. Recently, the database team reports slow performance during peak hours. The network team checks the physical switches and finds no congestion. The ESXi host shows the two uplinks are heavily utilized with many dropped packets on the database port group. The administrator suspects that the database traffic is being starved by other traffic. Which action should the administrator take to resolve the issue?

A. Increase the number of physical uplinks to four 10 GbE NICs.
B. Change the NIOC shares to Web (10), App (30), Database (60).
C. Create a separate vSphere standard switch for the database tier.
D. Enable SR-IOV on the physical NICs and assign virtual functions to database VMs.

Accepted Answer

Change the NIOC shares to Web (10), App (30), Database (60).. The database traffic is being starved due to low NIOC shares relative to the web and app tiers. By increasing the database shares to 60 and reducing web to 10, the database port group will receive a higher proportion of the available bandwidth during congestion, alleviating the dropped packets and slow performance. NIOC shares are relative and only take effect when there is contention, so adjusting them directly addresses the starvation without requiring additional hardware.

Answer

Create a separate vSphere standard switch for the database tier.

Answer

Enable SR-IOV on the physical NICs and assign virtual functions to database VMs.

Answer

Increase the number of physical uplinks to four 10 GbE NICs.

Question 6

Which THREE techniques are recommended to improve virtual machine network performance in a vSphere environment? (Select three.)

Accepted Answer

Enable Jumbo Frames on the virtual switch.. Option A is correct because enabling Jumbo Frames (MTU 9000) on the virtual switch, physical uplinks, and guest OS reduces per-packet overhead and CPU utilization, improving throughput for large data transfers. Option B is correct because the VMXNET3 adapter is a paravirtualized NIC designed for vSphere that delivers higher throughput and lower CPU utilization than emulated adapters like e1000e. Option E is correct because SR-IOV on supported NICs allows a virtual function to be passed directly to the VM, bypassing the hypervisor's virtual switch datapath for near-native network performance and reduced latency. Option C is not recommended because dedicating a separate virtual switch per VM adds management overhead and does not inherently improve performance; standard vSwitch design uses shared switches with proper uplink and teaming configuration. Option D is incorrect because e1000e is an emulated Intel adapter that offers lower performance and higher CPU overhead than VMXNET3.

Answer

Use a dedicated virtual switch for each VM.

Answer

Use the e1000e network adapter type.

Question 7

Which TWO statements accurately describe vSphere Lifecycle Manager (vLCM) image-based management features?

Accepted Answer

An image includes ESXi version, firmware/driver version, and additional components.. Options A and D are correct. Image-based management in vLCM uses a single image per cluster, which includes ESXi version, firmware/driver versions, and additional components (A). Offline bundles can be imported to create custom images (D). Option B is incorrect because you can use custom images, not only vendor-specific ones. Option C is incorrect because there is no limit of 10 hosts; a single image applies to all hosts in the cluster. Option E is incorrect because only one image can be assigned per cluster.

Answer

Only vendor-specific images from OEMs are supported.

Answer

A single vLCM image can be applied to a maximum of 10 hosts in a cluster.

Answer

Multiple images can be assigned to different hosts within the same cluster.

Question 8

Which THREE components are required to implement vSphere with Tanzu (Workload Management)? (Choose three.)

Accepted Answer

A vSphere Distributed Switch (vDS). Option B is correct because implementing vSphere with Tanzu requires a vSphere Distributed Switch (vDS) to provide the networking foundation for the Supervisor Cluster and its namespaces, including the distributed port groups used by Tanzu workloads. Option D is correct because the vSphere cluster hosting the Supervisor must have vSphere DRS enabled, since DRS is a prerequisite for Workload Management and is used to place and manage Supervisor control plane and worker nodes. Option E is correct because shared storage (such as vSAN, NFS, iSCSI, or Fibre Channel) accessible by all ESXi hosts in the cluster is required so that Kubernetes control plane VMs and persistent volumes can be placed and migrated across hosts. Option A is not required because vSphere with Tanzu uses the existing vCenter Server rather than a separate dedicated Tanzu vCenter. Option C is not required because NSX-T Data Center is only needed for certain networking configurations (such as NSX-based Supervisor networking); vSphere with Tanzu can also be deployed using a vDS with a HAProxy load balancer, so NSX-T is not a mandatory component.

Answer

A separate vCenter Server for Tanzu management

Answer

NSX-T Data Center for networking

Question 9

An organization has multiple vSphere clusters with different hardware models. They want a single lifecycle management strategy that minimizes administrative overhead while ensuring all hosts are up-to-date with ESXi and firmware. Which approach should they take?

Accepted Answer

Create separate cluster images per hardware model and apply to respective clusters.. vLCM cluster images are hardware-model-specific because they bundle the ESXi base image plus OEM firmware and driver add-ons validated for a particular server model. With multiple hardware models, the correct strategy is one image per model, applied to the clusters containing that model. This keeps each image's firmware/driver add-on aligned with the hardware while still centralizing lifecycle management through vLCM.

Answer

Create one baseline group per cluster and attach it.

Answer

Use host profiles to enforce firmware settings.

Answer

Use a single cluster image for all clusters.

Question 10

An administrator is configuring a distributed switch for a cluster of ESXi hosts. The requirements are: VLAN 100 for production, VLAN 200 for management, and a separate VLAN 300 for vMotion. The management network should be isolated from production traffic. What is the best practice for configuring these networks on the distributed switch?

Accepted Answer

Create three separate distributed port groups, each with the appropriate VLAN ID, and assign each VM kernel adapter or VM to the correct port group.. Best practice on a vSphere Distributed Switch is to create one distributed port group per VLAN/network function, each with its own VLAN ID, and attach the appropriate VMkernel adapters (management, vMotion) or VM vNICs to the correct port group. This provides clean traffic isolation, simplifies troubleshooting, and aligns with VMware's recommended design for separating management, vMotion, and production traffic.

Answer

Create one distributed port group with VLAN 100, and use VLAN tagging on the VMs for management and vMotion.

Answer

Use standard switches for management and vMotion to avoid complexity.

Answer

Create one distributed port group with VLAN trunk (4095) and use port-based VLAN filtering on the VMs.

Answer

Create two port groups: one for production (VLAN 100) and one for management+vMotion (VLAN 200) because vMotion can share VLAN with management.

Question 11

Which two are benefits of using vLCM over legacy baseline-based patching? (Choose two.)

Accepted Answer

Real-time compliance monitoring of all hosts.. Option C is correct because vLCM (vSphere Lifecycle Manager) continuously and automatically checks each host in the cluster against the desired image and reports drift in real time, unlike legacy baselines that require manual compliance scans. Option E is correct because vLCM manages the entire cluster from a single desired-state image (base ESXi image plus firmware add-ons and components), ensuring every host is identical and consistent, whereas baselines apply separate patch/extension baselines per host. Option A is not a vLCM benefit since vLCM requires homogeneous clusters with identical hardware and image, and heterogeneous configurations are actually a limitation. Option B is incorrect because remediation with vLCM still requires hosts to enter maintenance mode (or use the quick-boot/stateless options) just as with baselines. Option D is incorrect because vLCM does not provide built-in integration with vRealize Automation; that is not a documented vLCM capability.

Answer

Support for heterogeneous cluster configurations.

Answer

No requirement to put hosts in maintenance mode.

Answer

Built-in integration with vRealize Automation.

Question 12

An administrator is reviewing the network configuration of a standard switch. The exhibit shows the current settings for a port group. Which change would improve load distribution for VM traffic?

Accepted Answer

Change the load balancing policy to Route based on IP hash.. Route based on IP hash uses a hash of source and destination IP addresses to determine which uplink to use for each traffic flow, ensuring that all packets in a given flow use the same uplink while distributing different flows across multiple uplinks. This improves load distribution for VM traffic compared to the default Route based on the originating virtual port, which only considers the vNIC port ID and can lead to uneven distribution when multiple VMs share the same port group.

Answer

Change the VLAN ID to 100.

Answer

Enable failover on the port group.

Answer

Set one NIC as active and the other as standby.

Question 13

Match each vSphere storage concept to its definition.

Accepted Answer

VMFS: Cluster file system used for storing virtual machine files on shared block storage.. Correct matches: VMFS is a cluster file system for block storage; NFS is a network file system for NAS; vSAN aggregates local disks for shared storage; VVols enable VM-level storage management. Common confusions: mixing VMFS and vSAN definitions, or swapping NFS and VMFS.

Answer

VMFS: Software-defined storage that aggregates local disks of ESXi hosts to create a shared datastore.

Answer

NFS: Cluster file system used for storing virtual machine files on shared block storage.

Question 14

An administrator needs to provide redundancy for VM traffic across multiple physical NICs on a vSphere Standard Switch. Which NIC teaming policy should be used to ensure fault tolerance without load balancing?

Accepted Answer

Use explicit failover order (Active/Standby). The 'Use explicit failover order (Active/Standby)' policy designates one or more NICs as active and the rest as standby, providing pure fault tolerance without any load balancing. When the active NIC fails, traffic automatically fails over to the standby NIC, ensuring redundancy without distributing traffic across multiple uplinks.

Answer

Route based on IP hash

Answer

Route based on originating virtual port

Answer

Route based on source MAC hash

Question 15

An organization is implementing vSphere Trust Authority for sensitive workloads. The administrator must configure the trusted ESXi hosts to attest to vCenter Server. Which component is responsible for performing attestation?

Accepted Answer

A separate vCenter Server instance acting as the Trust Authority. VSphere Trust Authority uses a dedicated vCenter Server instance (Trust Authority vCenter) to perform attestation of ESXi hosts. Option A is incorrect because the administrator's workstation is not part of the trust chain and does not perform attestation. Option C is incorrect because the Key Provider (KMS) server is used for encryption key management, not for host attestation. Option D is incorrect because the trusted ESXi hosts themselves are the subjects of attestation; they do not perform attestation.

Answer

The administrator's workstation

Answer

The Key Provider (KMS) server

Answer

The trusted ESXi hosts themselves