VCP-DCV Practice Test 3 — 25 Questions

Question 1

A vSphere administrator is planning to upgrade a vSphere 7.0 U3 cluster to vSphere 8.0. The cluster currently uses vSphere Lifecycle Manager (vLCM) with a single image. After the upgrade, the administrator wants to ensure that all ESXi hosts apply firmware updates from a hardware support manager (HSM) integrated with vLCM. Which step must the administrator take before starting the cluster upgrade?

Accepted Answer

Ensure the desired ESXi version and firmware component are specified in the vLCM image.. Option D is correct because vLCM with a single image can include both the ESXi version and firmware components from an integrated hardware support manager (HSM). By specifying the desired ESXi version and firmware component in the vLCM image, the administrator ensures that during the cluster upgrade, vLCM will apply the firmware updates provided by the HSM as part of the image-based remediation process. This is the required step before starting the upgrade to vSphere 8.0.

Answer

Disable vLCM and use baseline-based remediation for the upgrade.

Answer

Create separate baselines for ESXi and firmware and attach them to the cluster.

Answer

Remove the HSM integration because vLCM cannot apply firmware updates.

Question 2

Which THREE actions can be performed on a VMFS datastore without unmounting it or putting the ESXi host into maintenance mode?

Accepted Answer

Remove the datastore from the host's inventory.. Option A is correct because removing a datastore from the host's inventory simply detaches the datastore object from the ESXi host's configuration without affecting the underlying LUN or requiring the host to enter maintenance mode. This operation only modifies the host's metadata, not the storage device itself, so it can be performed while VMs are running on other datastores.

Answer

Upgrade the datastore from VMFS5 to VMFS6.

Answer

Add a new extent to the datastore from a different LUN.

Question 3

Refer to the exhibit. An administrator runs the vmkfstools command on an ESXi host and views the output. Which conclusion can be drawn from the output?

Accepted Answer

The datastore has approximately 50% free space.. The vmkfstools command output shows the capacity and free space values for the datastore. In this case, the free space is approximately half of the total capacity, indicating roughly 50% free space. This is a direct calculation from the displayed numbers, not an inference about provisioning or encryption.

Answer

The VMDK file is thin provisioned.

Answer

The datastore has a block size of 1 MB, which is the maximum for VMFS-6.

Answer

The virtual machine's disk is encrypted.

Question 4

An administrator is troubleshooting performance issues on a vSphere cluster. Which TWO metrics should be monitored to identify CPU ready time contention?

Accepted Answer

Co-Stop. CPU ready time contention occurs when a virtual machine is ready to execute instructions but the ESXi host's CPU scheduler cannot immediately allocate physical CPU cycles. The %RDY metric directly measures the percentage of time a VM is waiting to be scheduled on a physical CPU, while Co-Stop specifically tracks time lost when vCPUs in a single VM are forcibly co-scheduled and then descheduled due to contention on the same physical core. Both metrics are primary indicators of CPU scheduling pressure.

Answer

Disk Kernel Latency

Answer

Memory Swap In Rate

Answer

Network Packet Drop Rate

Question 5

Refer to the exhibit. An administrator runs the command on an ESXi host to check HTTPS connections. The host is running vCenter Server and several VMs. What is the most likely cause of the TIME_WAIT connection?

Accepted Answer

A client closed the HTTPS connection and the host is in TIME_WAIT state.. Option D is correct because the TIME_WAIT state is a normal part of TCP connection termination. When a client closes an HTTPS connection, the ESXi host (as the server) enters TIME_WAIT to ensure any delayed segments are not misinterpreted by a new connection. This state is expected and not indicative of a problem.

Answer

A firewall is blocking return traffic from that client.

Answer

The host's TCP stack is misconfigured for high traffic.

Answer

The host is under memory pressure and dropping connections.

Question 6

A vSphere administrator is designing a new cluster for a mission-critical application that requires maximum availability. The cluster will consist of four ESXi hosts. Which vSphere feature should be enabled to protect against host failures while minimizing resource waste?

Accepted Answer

Enable vSphere HA and configure admission control to reserve resources for one host failure.. Option B is correct because vSphere HA with admission control configured to reserve resources for one host failure ensures that if a host fails, the VMs can be restarted on the remaining hosts without overcommitting resources. This provides maximum availability for mission-critical applications while minimizing resource waste by only reserving enough capacity for a single host failure, not for multiple or all hosts.

Answer

Enable vSphere DRS and set the migration threshold to the most aggressive setting.

Answer

Enable vSphere Fault Tolerance on all VMs in the cluster.

Answer

Configure vSphere Replication for all VMs to replicate to a secondary site.

Question 7

An administrator is troubleshooting a performance issue where a VM is not receiving the expected CPU resources. The VM is a member of a resource pool with a CPU Shares value of 2000. The host has two other resource pools: one with 1000 shares and another with 500 shares. All resource pools are competing for CPU. The VM's reservation is set to 2 GHz, and the host has 8 GHz available. What is the minimum CPU allocation the VM is guaranteed?

Accepted Answer

2 GHz. The VM's reservation of 2 GHz guarantees that the host will reserve at least that amount of CPU capacity for the VM, regardless of contention or share values. Shares only affect the distribution of excess resources beyond reservations, not the guaranteed minimum. Since the host has 8 GHz available, the reservation is fully satisfiable, so the VM is guaranteed 2 GHz.

Answer

4 GHz (based on share ratio)

Answer

8 GHz (all host CPU)

Answer

0 GHz (no guarantee without reservation)

Question 8

A virtualized SQL server is experiencing high latency on its virtual disks. The datastore is an NFS mount on a shared NAS. Which action would most likely reduce disk latency without reducing capacity?

Accepted Answer

Enable Storage I/O Control (SIOC) on the datastore and set the latency threshold to a lower value.. D is correct because enabling Storage I/O Control (SIOC) on the NFS datastore and lowering the latency threshold allows the hypervisor to proactively throttle I/O-intensive VMs before the storage array becomes congested, reducing overall disk latency. SIOC uses a latency-based algorithm to enforce fairness and prevent a single VM from monopolizing I/O resources, which directly addresses the high-latency issue without altering the datastore capacity.

Answer

Increase the number of outstanding I/O requests per virtual disk in the VM settings.

Answer

Disable SIOC on the datastore to avoid overhead.

Answer

Enable SIOC on the datastore and set the latency threshold to a higher value.

Question 9

An administrator notices that a critical VM running a database has a high CPU ready time average (over 20%) on a host with 2 physical CPUs (16 cores each). The host is running 6 VMs, each with 8 vCPUs. What is the most likely cause of the high ready time?

Accepted Answer

The host has too many vCPUs relative to physical cores; reduce vCPU count on some VMs.. Option B is correct because the host has 32 physical cores (2 CPUs × 16 cores) but the 6 VMs each with 8 vCPUs total 48 vCPUs, resulting in a vCPU-to-core ratio of 1.5:1. A CPU ready time average over 20% indicates severe contention for physical cores, as the hypervisor cannot schedule all vCPUs simultaneously. Reducing the vCPU count on some VMs would lower the ratio and alleviate the scheduling bottleneck.

Answer

Hyper-Threading should be disabled to reduce scheduling overhead.

Answer

The VMs are not configured with NUMA awareness.

Answer

Memory overcommitment is causing excessive swapping.

Question 10

Which TWO of the following are characteristics of vSphere High Availability (HA) heartbeat networks? (Choose two.)

Accepted Answer

Datastore heartbeats can be used as a secondary heartbeat mechanism.. Datastore heartbeats serve as a secondary heartbeat mechanism in vSphere HA. When the primary management network heartbeat fails, the host checks datastore heartbeats to determine whether it is isolated or has suffered a network partition. This prevents unnecessary VM restarts when the management network is temporarily unavailable but the host is still connected to shared storage.

Answer

A separate physical network is required for HA heartbeats.

Answer

The default isolation address is the vCenter Server IP address.

Answer

Heartbeats are sent over the VM network to avoid interference with management traffic.

Question 11

A company has a vSphere environment with a vCenter Server Appliance (VCSA) that is running low on disk space. The administrator notices that the /storage/archive partition is nearly full. Which action should the administrator take to reclaim space without impacting the functionality of vCenter Server?

Accepted Answer

Run the 'vcenter-delete-archive' script from the command line.. The VCSA runs on a Linux-based operating system, not Windows, so the Windows Disk Cleanup utility is irrelevant. The /storage/archive partition stores historical data such as stats, events, and tasks. VMware provides the 'vcenter-delete-archive' script as the supported method to safely purge old archived data from this partition without risking corruption of the vCenter Server database or services. Manually deleting files via SSH can leave the database in an inconsistent state, while increasing the virtual disk only postpones the issue without reclaiming space.

Answer

Increase the size of the VCSA virtual disk using vSphere Web Client.

Answer

Use the Windows Disk Cleanup utility on the VCSA.

Answer

Manually delete files from the /storage/archive directory using SSH.

Question 12

An administrator is troubleshooting a VM that is experiencing high latency on its virtual disks. The VM is connected to a vSphere datastore backed by an NFS share. The ESXi host has multiple VMkernel ports configured for NFS traffic. Which configuration change is most likely to improve storage performance?

Accepted Answer

Configure multiple VMkernel ports for NFS and enable port binding with a route based on originating port ID policy.. Option A is correct because NFS port binding (also known as NFS multipathing) allows multiple VMkernel ports to be used for NFS traffic, and when combined with a 'route based on originating port ID' load-balancing policy, it enables the ESXi host to distribute NFS I/O across multiple physical NICs and paths. This increases aggregate throughput and reduces latency by avoiding congestion on a single VMkernel port or physical link, which is the most effective change for improving storage performance in this scenario.

Answer

Use a single VMkernel port for NFS and configure it with the highest priority.

Answer

Enable jumbo frames on the NFS VMkernel port and the physical switches.

Answer

Increase the disk queue depth on the VM's virtual SCSI controller.

Question 13

An administrator is configuring a new iSCSI storage array for a vSphere cluster. The array supports multiple iSCSI targets. What is the recommended best practice for multipathing to ensure high availability and load balancing?

Accepted Answer

Create multiple VMkernel ports for iSCSI, each bound to a separate physical NIC, and configure multiple iSCSI targets.. Option B is correct because VMware best practices for iSCSI multipathing require multiple VMkernel ports, each bound to a separate physical NIC, and multiple iSCSI targets to provide both path redundancy and load balancing. This configuration leverages the Pluggable Storage Architecture (PSA) and native multipathing plugins (NMP) to distribute I/O across active paths while maintaining high availability through automatic path failover. Using separate VMkernel ports and NICs ensures that no single point of failure exists in the storage network.

Answer

Use the management VMkernel port for iSCSI traffic to simplify configuration.

Answer

Configure a single physical NIC with multiple VLANs for iSCSI traffic.

Answer

Use a single VMkernel port for iSCSI and assign multiple IP addresses to it.

Question 14

An organization wants to migrate a VM from one vCenter Server to another without shutting down the VM. Both vCenter Servers are in Enhanced Linked Mode. Which migration method should the administrator use?

Accepted Answer

Cross-vCenter vMotion. Cross-vCenter vMotion (option B) is the correct method because it allows a live, zero-downtime migration of a running VM between vCenter Server instances, even when both are in Enhanced Linked Mode. This feature uses the vMotion protocol to transfer memory and execution state across vCenter boundaries without requiring shared storage, as long as the source and destination hosts are in the same vCenter Single Sign-On domain and meet compatibility requirements.

Answer

Cold migration

Answer

Storage vMotion

Answer

Export the VM as OVF and import it to the other vCenter

Question 15

A vSphere administrator is planning to deploy a vCenter Server Appliance (VCSA) with an embedded Platform Services Controller (PSC). The company policy requires that all vCenter services be highly available. Which deployment topology should the administrator choose?

Accepted Answer

Deploy a VCSA with embedded PSC on a cluster with vSphere HA enabled.. Option C is correct because deploying a VCSA with an embedded PSC on a cluster with vSphere HA enabled ensures that if the ESXi host running the VCSA fails, the VCSA is automatically restarted on another host in the cluster, providing high availability for all vCenter services. The embedded PSC topology is fully supported with vSphere HA, and this approach meets the policy requirement without the complexity of external PSCs or multi-site configurations.

Answer

Deploy a single VCSA with embedded PSC on a standalone host.

Answer

Deploy a VCSA with an external PSC, and install the PSC on a separate VM.

Answer

Deploy two VCSAs in separate vCenter Single Sign-On domains and configure multi-site.

Question 16

Which TWO conditions must be met to successfully enable vSphere Network I/O Control (NIOC) on a vSphere Distributed Switch? (Choose two.)

Accepted Answer

All ESXi hosts in the cluster must be connected to the same vDS.. Option A is correct because NIOC operates at the vDS level and requires all hosts participating in the NIOC configuration to be attached to the same distributed switch. This ensures consistent network resource allocation and traffic shaping policies across the cluster. Option D is correct because NIOC is a premium feature that requires an Enterprise Plus license, as it leverages advanced resource management capabilities not available in lower license tiers.

Answer

Each ESXi host must have a dedicated vDS.

Answer

The vDS must have at least one uplink.

Answer

The physical switches must support LACP.

Question 17

A vSphere administrator is troubleshooting connectivity issues for a virtual machine on a standard switch. The VM is configured with VLAN 100, but cannot ping the default gateway. The VMkernel port on the host is on VLAN 200. The physical switch port connected to the host is configured as a trunk port allowing VLANs 100 and 200. Which action should the administrator take to resolve the issue?

Accepted Answer

Ensure the VM port group is set to VLAN 100.. The VM is configured with VLAN 100, and the physical switch trunk port already allows VLAN 100 and 200. The VMkernel port on VLAN 200 is working, so the issue is that the VM port group must be explicitly set to VLAN 100 to tag egress frames with VLAN 100 and to accept only VLAN 100-tagged frames on ingress. Option C ensures the standard switch port group applies the correct VLAN ID, matching the physical switch trunk configuration.

Answer

Enable promiscuous mode on the VM port group.

Answer

Change the physical switch port to access mode on VLAN 100.

Answer

Set the VM port group VLAN to 4095.

Question 18

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). Option C is correct because 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 19

A vSphere administrator is designing a network for a cluster of ESXi hosts. Each host has four 10GbE uplinks. The cluster will host mission-critical VMs that require maximum throughput and redundancy. The administrator plans to use Network I/O Control (NIOC) and a vSphere Distributed Switch (vDS). Which configuration best ensures consistent network performance for all VMs?

Accepted Answer

Configure a single vDS with all four uplinks, enable NIOC, and set shares and reservations for each traffic type.. Option A is correct because NIOC enables per-traffic-type resource management using shares, reservations, and limits, ensuring that mission-critical VMs receive consistent network throughput even under contention. Combining all four uplinks into a single vDS maximizes aggregate bandwidth and provides redundancy through teaming policies, while NIOC prioritizes traffic flows to prevent VMkernel or management traffic from starving VM traffic.

Answer

Configure a single vDS with all four uplinks and enable NetFlow for monitoring.

Answer

Create two separate vDS, each with two uplinks, and separate VM traffic from VMkernel traffic.

Answer

Configure a single vDS with all four uplinks and use Route based on IP hash teaming.

Question 20

A VM on a vSphere Distributed Switch is unable to receive traffic from external networks. The VM can send traffic out successfully. The VM port group has no security policies set (default). The physical switch port is configured as an access port on VLAN 100. The VM port group VLAN is set to 100. What is the most likely cause?

Accepted Answer

The VM is using a different default gateway than the VMkernel interface. Option C is correct because the VM can send traffic out successfully but cannot receive traffic from external networks, which indicates a routing issue rather than a switching or VLAN problem. The most likely cause is that the VM's default gateway is set to the VMkernel interface's IP address instead of the physical network's gateway, causing return traffic to be misrouted. This is a common misconfiguration where the VM's default gateway does not match the subnet's gateway, preventing inbound traffic from reaching the VM.

Answer

VLAN mismatch between VM port group and physical switch

Answer

The VM's NIC is in promiscuous mode

Answer

The physical switch port is configured as an access port instead of a trunk