Which term describes an application group that contains a client access point and at least one application-specific resource within a cluster?

• A. Virtual Cluster Server
• B. Cluster Resource Group
• C. Node Group
• D. Resource Pool

Answer: (A)

In a cluster, you treat a service as a single logical server that combines the endpoint clients connect to with all the resources that service needs. The client access point is the network name or address that clients use to reach the service, and it stays the same even if the service moves to another node during failover. The group that holds that endpoint together with the necessary resources (disk, IP, service, etc.) is described as a Virtual Cluster Server. This captures both the access point for clients and the application-specific resources that run the service, all as one unit that can fail over together.

This is a better fit than the other terms because those either refer to a general collection of resources (Cluster Resource Group), a set of cluster nodes (Node Group), or a pool of resources for allocation (Resource Pool) without inherently conveying the client-facing endpoint and its associated resources as a single virtual server.