Which issue refers to the cluster's ability to support future growth by adding…

Concept

A system characteristic names the aspect of a design being evaluated. Scalability is the characteristic concerned with increasing capacity as workload or resource count grows, while preserving the system's basic architecture.

In a cluster, horizontal scaling adds nodes; it differs from security, cost management, and the distribution of current work.

Application

The stem describes accommodating future growth specifically by adding nodes without major redesign. That is horizontal growth of capacity, so the relevant issue is scalability.

Contrast

• Security concerns protecting data, identities, and access from unauthorized use.

• Cost concerns the capital and operating resources needed for the cluster.

• Load balancing distributes current work among available nodes; it does not by itself state whether new nodes can be added without redesign.

Cross-check

If demand increases, a scalable cluster can add nodes and gain capacity while retaining the same overall design. This directly matches the growth condition in the stem.

Therefore, the issue is scalability.