New Release 2V0-71.23 VMware Certification Questions

vSphere with Tanzu storage policies are converted to storage classes when they are assigned to namespaces. A storage class is a Kubernetes object that defines a set of parameters for provisioning persistent volumes1. A storage policy is a vSphere object that defines thecharacteristics of the underlying storage for a given workload2. When a vSphere administrator assigns a storage policy to a namespace, vSphere with Tanzu automatically creates a corresponding storage class in the namespace with the same name as the storage policy3. The storage class references the storage policy ID and allows DevOps engineers to use the storage policy for dynamic provisioning of persistent volumes3. References: Storage Classes - Kubernetes, Create Storage Policies for vSphere with Tanzu - VMware Docs, Assign Storage Policies to Namespaces - VMware Docs

VMware vSphere 8 is the version of VMware vSphere that introduces the capability for provisioning a workload cluster using a cluster class (ClusterClass) from VMware Tanzu Mission Control. ClusterClass is a feature of Cluster API that allows users to define a reusable cluster configuration template and use it to create consistent clusters with a predefined shape and size. Tanzu Mission Control leverages ClusterClass to enable users to create Tanzu Kubernetes clusters in vSphere with Tanzu using a default cluster class. The default cluster class specifies the number of control plane nodes, worker nodes, and the resources allocated to each node. To use ClusterClass with Tanzu Mission Control, the vSphere environment must be running version 8.0 or later, and the Supervisor Cluster must be upgraded from vSphere 7.0U3.

The other options are incorrect because:

• VMware vCenter Server 6.7 Update 3 is not a version of VMware vSphere, but rather a version of VMware vCenter Server, which is the centralized management platform for vSphere environments. VMware vCenter Server 6.7 Update 3 does not support ClusterClass or Tanzu Mission Control.
• VMware vSphere 6.7 is an older version of VMware vSphere that does not support ClusterClass or Tanzu Mission Control. VMware vSphere 6.7 reached end of general support on October 15, 2022.
• VMware is not a version of VMware vSphere, but rather the name of the company that develops and sells VMware vSphere and other products.

References: [Introducing ClusterClass and Managed Topologies in Cluster API], [Provision a Cluster in vSphere with Tanzu using a Cluster Class], [A First Look at ClusterClass Deployments using Tanzu Kubernetes Grid 2.0], [VMware vCenter Server 6.7 Update 3 Release Notes], [VMware Product Lifecycle Matrix]

The command that has a valid syntax for scaling VMware Tanzu Kubernetes Grid cluster using Tanzu CLI is tanzu cluster scale --controlplane-machine-count 5 --worker-machine-count 10. The tanzu cluster scale command allows users to manually scale the number of control plane and worker nodes in a cluster5. The --controlplane-machine-count flag specifies the desired number of control plane nodes, while the --worker-machine-count flag specifies the desired number of worker nodes5. The other commands are invalid because they either use incorrect flags or omit the namespace flag when required5. References: Scale Clusters - VMware Docs

Contour is an open-source Kubernetes ingress controller that provides dynamic configuration updates and makes use of the Envoy proxy as a data plane1. Envoy is an open-source edge and service proxy that can handle large volumes of network traffic between services in a cloud-native environment2. Contour leverages Envoy’s advanced features such as load balancing, health checking, dynamic service discovery, circuit breaking, rate limiting, and more3. Contour also integrates with Envoy’s external authorization filter to support external authentication and authorization providers4.

The other options are incorrect because:

• NSX Load Balancer is a VMware solution that provides L4 and L7 load balancing and ingress control for Kubernetes clusters5. It is not the data plane for Contour.
• Istio is an open-source service mesh that provides a uniform way to connect, secure, control, and observe services in a distributed system6. It is not the data plane for Contour.
• Prometheus is an open-source systems monitoring and alerting toolkit that can collect metrics from various sources, including Kubernetes clusters7. It is not the data plane for Contour.

References: Contour Overview, Envoy Overview, Contour Architecture, External Authorization Support, NSX Advanced Load Balancer, Istio Overview, Prometheus Overview