Final answer:
It is true that a Deployment Server and Cluster Master can coexist on the same node under certain circumstances, but this is generally recommended only for smaller environments to prevent resource contention.
Step-by-step explanation:
The statement is True: under certain circumstances, it is acceptable to install a Deployment Server and Cluster Master on the same node. However, this is typically recommended only in smaller or less critical environments where resource contention will not be a significant issue. In larger, production-level environments, the best practice is to separate these roles to ensure performance and reliability. The Deployment Server is responsible for managing Splunk components and distributing configurations, while the Cluster Master manages index replication and ensures data availability in a clustered environment. If both are on the same node, it is crucial to monitor the performance closely to prevent any potential issues arising from the shared resources.