Pass the VMware VCAP-VKS 3V0-24.25 Questions and answers with ExamsMirror

In Workload Management, updating the Supervisor and updating VKS clusters are related but distinct lifecycle operations. The Supervisor runs its own Kubernetes distribution, while VKS clusters consume vSphere Kubernetes releases (VKrs). These are “delivered differently,” with Supervisor Kubernetes releases and VKrs each having their own release cadence and compatibility constraints. As a result, successfully updating the Supervisor control plane does not automatically change the Kubernetes version running inside an existing VKS workload cluster; the VKS cluster must be updated to a compatible VKr separately. This mismatch is exactly why an application can still fail after a Supervisor update: the DevOps engineer is still deploying onto a cluster that hasn’t been updated to the Kubernetes version required by the application (or by the API versions/features it depends on). Additionally, Workload Management enforces sequential minor-version updates and compatibility checks between Supervisor and VKrs, so the correct remediation is to update the VKS cluster to an appropriate VKr that satisfies both application needs and Supervisor compatibility.

The errors described—specifically the memcache.go failure, the inability to fetch resource lists for Antrea, and the YAML context error—are classic symptoms of aConfiguration Context mismatch. In VCF 9.0, there are two distinct layers of API interaction: theSupervisor Cluster API(used for management tasks like creating clusters) and theGuest Cluster API(used for deploying workloads within the VKS).

When an administrator upgrades a Supervisor, the API endpoint or the available API groups may change. If the administrator attempts to run kubectl commands against a VKS cluster while their kubeconfig context is still pointing to the Supervisor (or vice versa), the client will encounter "mapping values" errors and "unable to handle request" errors because it is sending requests to an endpoint that does not recognize those specific resource definitions (like Antrea stats in the wrong context). To resolve this, the administrator must ensure they have switched to the correct context using kubectl config use-context after the Supervisor update to ensure the local client is communicating with the correct API server and version of the Kubernetes binaries.

VCF 9.0 positions VKS clusters as Kubernetes-native environments where platform teams install and manage “standard packages” and add-ons. In VCF Automation’s VKS overview, VMware states that a set of packages is automatically included with a VKS cluster, includingkapp-controllerandsecret-gen controller. These components are part of theCarveltoolchain used for packaging and deploying applications/configuration in a Kubernetes-friendly, declarative way.

In addition, the VCF 9.0 CLI “package” workflows explicitly supportytt overlaysduring package installation/updates (for example, --ytt-overlay-file and --ytt-overlays), which are configuration mechanisms associated with Carvel-based packaging workflows.

Helmis the other widely used Kubernetes package manager for installing and configuring applications through charts and values, and is commonly used by DevOps teams on Kubernetes clusters such as VKS for app deployment and configuration management. By contrast, Fluent Bit is a log shipper, Multus is a CNI multiplexer, and Grafana is a visualization tool—none are package management tools.

VCF 9.0 distinguishes betweenbacking up the Supervisor control planeandbacking up workloadsthat run on the Supervisor, includingvSphere Pods. In the “Considerations for Backing Up and Restoring Workload Management” table, the scenario “Backup and restore vSphere Pods” explicitly lists the required tool as“Velero Plugin for vSphere”, with the guidance to “Install and configure the plug-in on the Supervisor.”

The same document is explicit thatstandalone Velero with Restic is not valid for vSphere Pods, stating: “You cannot use Velero standalone with Restic to backup and restore vSphere Pods. You must use the Velero Plugin for vSphere installed on the Supervisor.”

vCenter file-based backup is documented for restoring theSupervisor control plane state, not for backing up and restoring vSphere Pod workloads themselves. Therefore, to meet the requirement to protect third-party applications running asvSphere Pods, the architect should propose theVelero Plugin for vSphere.

Harbor reduces the risk of running vulnerable or tampered images primarily throughvulnerability scanningandimage signing.Vulnerability scanning (E)detects known CVEs in image layers (OS packages and application dependencies, depending on the scanner configuration). This allows teams to identify—and gate the use of—images that contain high/critical vulnerabilities before those images are deployed to Kubernetes clusters. Enforcing scanning as part of the image promotion process helps prevent outdated images with known CVEs from being pulled into production.Image signing (A)provides integrity and provenance controls by enabling consumers to verify that an image was produced and approved by a trusted publisher and has not been altered. When combined with admission controls/policies (for example, only allowing signed images from specific projects), signing helps block unauthorized or unapproved images from being deployed, which is critical when the incident involves exposed internal APIs and supply-chain risk.

The other choices do not directly prevent recurrence:automatic image update (B)is not a core Harbor registry control,deploy both container and VM images (C)is a content capability rather than a security control, andautomatic image validation (D)is not a standard Harbor registry capability distinct from signing/scanning.

VCF 9.0 describes a standardized approach to deploying optional capabilities on VKS clusters viastandard packages. In the VCF Automation cloud services overview, VMware listsIstioamong the packages that “can be optionally installed” for VKS. For installing those packages, the VCF CLI provides a dedicatedpackage pluginthat “works on a workload cluster” and exposes explicitinstallworkflows.

The VCF CLI command reference shows the syntax for installing a package:

vcf package install INSTALLED_PACKAGE_NAME --package PACKAGE_NAME --version VERSION (with optional values files and overlays). This is the supported, VCF-aligned way to install standard packages such as Istio onto a VKS workload cluster in a controlled, declarative manner, including tracking reconciliation status and providing configuration via a values file.

Options that rely on ad-hoc downloads (curl) or building tooling (docker build) do not match the documented VCF package-management workflow for VKS standard packages. Therefore, the correct command family isvcf package install.

VCF 9.0 explains that VKS releases are distributed throughcontent libraries, and that when you configure asubscribed content libraryyou can choose how content is downloaded and synchronized. Critically for constrained storage sites, the documentation states you can selecton-demand (“when needed”)download so thatonly the metadatais synchronized, and theactual image content is not downloadeduntil you explicitly need it—“as a result storage space is saved.”

This directly addresses the problem of a remote site with minimal datastore capacity: choosingWhen neededprevents the subscribed library from immediately caching all published VKS images locally. The vSphere content library guidance reinforces this behavior: with “download contents only when needed,” the system synchronizesmetadata only, which “saves storage space,” and you download a specific item’s content only when you synchronize that item for use.

Therefore, selectingDownload content → When neededis the correct action to avoid consuming all available datastore space.

VMware Cloud Foundation 9.0 documents a dedicated backup-and-restore approach forWorkload Managementwhere different components use different tools. Forworkloadsrunning on vSphere Supervisor–based Kubernetes (bothvSphere PodsandVKS cluster workloads), the documented solution isVelero, specifically theVelero Plugin for vSphereinstalled and configured on the Supervisor. The “Considerations for Backing Up and Restoring Workload Management” table explicitly lists: “Backup and restore vSphere Pods — Velero Plugin for vSphere” and “Backup stateless and stateful workloads on a VKS cluster and restore to a cluster provisioned by VKS — Velero Plugin for vSphere.”

The same section also clarifies thatSupervisor backups(via vCenter file-based backup) are for restoring theSupervisor control plane/stateand VKS node VMs—not for restoring workloads themselves—so workloads must be backed up separately.

Therefore, the correct tool for backing up and restoring workloads on clusters provisioned by vSphere Supervisor isVelero (using the Velero Plugin for vSphere).

VCF 9.0 describes a vSphere Namespace as the control point where administrators defineresource boundariesfor workloads, explicitly stating that vSphere administrators can create namespaces and “configure them with specified amount ofmemory, CPU, and storage,” and that you can “set limits forCPU, memory, storage” for a namespace. This directly supports stepAas a day-2 control to keep multi-tenant clusters governed and prevent resource contention across different teams and workload types.

For monitoring and optimization, VCF 9.0 explains that day-2 operations include visibility into utilization and operational metrics for VKS clusters, noting that application teams can use day-2 actions and gain insights intoCPU and memory utilizationand advanced metrics (including contention and availability) for VKS clusters. In addition, VCF 9.0 monitoring guidance for VKS clusters states thatTelegraf and Prometheusmust be installed and configured on each VKS cluster before metrics and object details are sent for monitoring, and that VCF Operations supports metrics collection for Kubernetes objects (namespaces, nodes, pods, containers) via Prometheus. Since the Prometheus stack commonly includes Grafana dashboards for visualization, deployingPrometheus + Grafanamatches the required monitoring/optimization outcome inC.

VCF 9.0 explicitly lists thecomponents that run in a VKS clusterand groups them into areas such as authentication/authorization, storage integration, pod networking, and load balancing. In that list, the documentation names:“Container Storage Interface Plugin”(a paravirtual CSI plug-in that integrates with CNS through the Supervisor),“Container Network Interface Plug-in”(a CNI plugin that provides pod networking), and“Cloud Provider Implementation”(supports creating Kubernetes load balancer services).

These three items map directly to the answer choicesD (Container Storage Interface),F (Container Network Interface), andA (Cloud Provider Implementation). The same VCF 9.0 section also mentions an authentication webhook, but that component is not offered as a selectable option in this question, so the best three matches among the provided choices are the CSI, CNI, and cloud provider implementation entries that the document explicitly states are present inside a VKS cluster.