VCP-DCV Practice Test 4 — 10 Questions

Question 1

An administrator configures a distributed switch with a single uplink on each host and a port group with VLAN 10. After connecting a VM to the port group, the VM cannot communicate with other VMs on the same VLAN but on different hosts. What is a likely cause?

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

Accepted Answer

The physical switch port is set to access mode with VLAN 10.. When the physical switch port is in access mode with VLAN 10, it expects untagged frames. However, the distributed port group with VLAN 10 tags the frames with VLAN 10. This mismatch causes the physical switch to drop or mishandle the traffic, preventing the VM from communicating with other VMs on the same VLAN across hosts. Option B is incorrect because teaming is not required for basic connectivity; a single uplink suffices. Option C describes trunk mode which would actually accept tagged frames, so it would work. Option D is incorrect because the VLAN ID is configured on the port group, not on the VM's virtual adapter.

Answer

The distributed switch has no teaming configured.

Answer

The physical switch port connected to the uplink is set to trunk mode and is tagging the VLAN.

Answer

The VLAN ID is not set correctly on the VM's virtual network adapter.

Question 2

A vSphere administrator needs to apply a critical security patch to all ESXi hosts in a cluster that is managed by a baseline. The patch is not yet available as an update in the baseline group. What is the best approach to apply this patch quickly?

Accepted Answer

Attach the patch as a new baseline to the cluster alongside existing baselines.. Attaching the patch as a new baseline to the cluster alongside existing baselines allows you to quickly apply the critical security patch without modifying the existing baseline group. This method is efficient and directly addresses the immediate need. Option A is incorrect because remediating each host individually via CLI is time-consuming and less efficient for a cluster. Option B is incorrect because creating a new baseline group is unnecessary and may cause disruption by replacing the current baseline group. Option C is incorrect because vLCM is used for image-based management, not baseline-based management, and the cluster is managed by baselines, not images.

Answer

Remediate each host individually using CLI commands.

Answer

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

Answer

Download the patch as an offline bundle and use vLCM to apply it directly.

Question 3

A vSphere administrator is using vSphere Lifecycle Manager images to manage a cluster. The administrator wants to add a new custom component (a driver) to the cluster image. Which THREE steps are required to successfully add the component? (Choose three.)

Accepted Answer

Download the component offline bundle from the vendor.. Options A, C, and D are correct. A: Download the component offline bundle from the vendor. C: Upload the component to the vLCM depot. D: Add the component to the image definition in vLCM. B is incorrect because you do not need to create a new software depot; the vLCM depot already exists and you upload the bundle to it. E is incorrect because validation is not a required step to add the component; it can be performed later as part of image compliance checking.

Answer

Create a new software depot on the vCenter Server.

Answer

Validate the component against the current image.

Question 4

An administrator has configured jumbo frames on a VDS and all physical switches. Virtual machines on different hosts can ping each other but cannot transfer files larger than 1500 bytes. What is the most likely cause?

Accepted Answer

The virtual machine's operating system MTU is set to 1500.. Jumbo frames require the entire network path, including the virtual machine's operating system, to support the larger MTU. If the VM OS MTU is left at 1500, packets larger than 1500 bytes will be fragmented by the OS or dropped, preventing large file transfers. Option A is incorrect because the problem states physical switches and the VDS are configured for jumbo frames, but the physical NICs must also be configured; however, the question does not indicate they are misconfigured, and the issue is more likely the VM OS. Option B is incorrect because TCP offload engines typically handle segmentation and checksum, not fragmentation due to MTU mismatch. Option C is incorrect because VMkernel adapters are for management and vMotion traffic, not VM data traffic; VM data uses the VM's own network stack.

Answer

The physical NICs are not configured for jumbo frames.

Answer

The TCP/IP offload engine is causing fragmentation.

Answer

The VMkernel adapters are not configured with MTU 9000.

Question 5

A vSphere administrator manages a cluster of 50 ESXi hosts using vLCM with image-based management. The cluster includes hosts from two different hardware vendors. The administrator needs to ensure firmware updates are consistently applied across all hosts. What is the best practice for this scenario?

Accepted Answer

Create separate cluster images for each hardware vendor and apply to respective hosts.. Different hardware vendors require different firmware, and vLCM image-based management supports creating separate cluster images per hardware type to ensure the correct firmware is applied to each host. Option A is wrong because baseline groups are deprecated and not the best practice for firmware updates. Option B is wrong because a single cluster image cannot contain multiple firmware sets for different vendors. Option D is wrong because manually updating firmware with vendor tools is not standardized and defeats the purpose of centralized lifecycle management via vLCM.

Answer

Use baseline groups to manage firmware separately.

Answer

Create a single cluster image that includes firmware for both vendors.

Answer

Manually update firmware using vendor tools, then use vLCM for ESXi updates.

Question 6

During a period of high network contention, management traffic is starved while NFS traffic gets the most bandwidth. Which configuration change would best address the issue?

Accepted Answer

Set a reservation for management traffic.. Setting a reservation for management traffic guarantees a minimum amount of bandwidth, ensuring that management traffic does not get starved even under high network contention. Option A (increasing management shares) improves relative priority but does not guarantee bandwidth. Option B (increasing the NFS limit) would allocate more bandwidth to NFS, worsening the problem. Option D (enabling traffic shaping on the management port group) affects only outbound traffic on a standard switch and does not use NIOC (Network I/O Control), which is needed for reservation-based guarantees. Option E (removing the vMotion reservation) may free up bandwidth but does not guarantee management traffic receives a minimum.

Answer

Increase management shares to 100.

Answer

Increase the NFS limit to 1000 Mbps.

Answer

Enable traffic shaping on the management port group.

Answer

Remove the reservation from vMotion.

Question 7

An administrator notices that a critical virtual machine is running slowly. The VM has 8 vCPUs and 32GB memory. The host is an ESXi 7.0 server with two Intel Xeon Gold 6248 sockets (20 cores each, hyperthreading enabled). The VM's CPU ready time is consistently above 10%. What is the most likely cause?

Accepted Answer

The host has too many VMs running and CPU oversubscription is too high.. High CPU ready time indicates the VM is ready to run but the hypervisor cannot schedule it. This is typically due to excessive CPU oversubscription. Option B correctly identifies that having too many VMs on the host leads to high CPU contention, causing ready time. Option A is incorrect because pinning vCPUs to a single NUMA node can increase ready time if other nodes are idle, but with only 8 vCPUs on a 40-logical-CPU node, contention is unlikely unless many other VMs are also pinned. Option C is incorrect because over-provisioning refers to total vCPUs exceeding physical CPUs, not individual VM vCPU count; the host has 80 logical CPUs, so 8 vCPUs is not over-provisioned. Option D is incorrect because disk I/O does not cause CPU ready time; it causes disk latency.

Answer

The VM's vCPUs are pinned to a single NUMA node causing contention.

Answer

The VM is over-provisioned on vCPUs relative to the host's physical cores.

Answer

The VM is using Eager Zero Thick disks causing high I/O latency.

Question 8

Based on the Healthcheck output for a distributed port (DVS Port 1) on dvs0, what can be concluded?

Accepted Answer

The physical switch is correctly configured for VLAN 100 and MTU 1500 on the uplinks connected to this host.. The Healthcheck output shows 'VLAN 100' and 'MTU 1500' with status 'OK', indicating that the physical switch configuration matches the DVS port settings for VLAN and MTU. Option A is incorrect because Healthcheck doesn't report speed/duplex of uplinks. Option C is incorrect because the teaming policy shown is 'Route based on originating virtual port', not IP hash. Option D is incorrect because Healthcheck checks configuration consistency, not packet loss.

Answer

The uplinks vmnic0 and vmnic1 are operating at 10 Gbps.

Answer

The load balancing policy is set to 'Route based on IP hash'.

Answer

The port is experiencing high packet loss due to misconfiguration.

Question 9

A vSphere administrator is planning to configure VMware vSAN. Which TWO requirements must be met for a vSAN cluster?

Accepted Answer

Each host must have at least one SSD and one HDD for capacity.. VSAN requires at least one SSD (or NVMe) for the cache tier and one HDD (or SSD) for the capacity tier on each host to form a disk group. This hybrid or all-flash configuration is fundamental to vSAN's storage architecture, where the cache tier accelerates writes and reads, while the capacity tier provides persistent storage.

Answer

A dedicated 10 GbE network for vSAN traffic.

Answer

All hosts must have identical CPU models.

Answer

A shared storage array accessible by all hosts.

Question 10

Which TWO of the following are functions of a vSphere Distributed Switch that are not available in a vSphere Standard Switch? (Select exactly two.)

Accepted Answer

Port mirroring (Distributed Port Mirroring).. Options A and C are correct. Port mirroring (Distributed Port Mirroring) is a feature exclusive to the vSphere Distributed Switch (vDS). Network I/O Control (NIOC) is also only available on vDS, allowing for bandwidth allocation and prioritization. Option B is incorrect because NIC teaming with explicit failover order is available on both standard and distributed switches. Option D is incorrect because traffic shaping policies are available on vSphere Standard Switches (vSS) at the port group level. Option E is incorrect because VLAN tagging and trunking are supported on both switch types.

Answer

NIC teaming with explicit failover order.

Answer

Traffic shaping policies.

Answer

VLAN tagging and trunking.