Which methods can nodes (runtimes) use to join a cluster in a customer-hosted runtime plane?

Which methods can nodes (runtimes) use to join a cluster in a customer-hosted runtime plane?

• A. Unicast
• B. Multicast
• C. Both Unicast and Multicast
• D. None

Answer: (C)

Clustering hinges on how a new runtime member finds and connects to existing peers. In a customer-hosted runtime plane, you can configure the cluster to join using unicast discovery, where a node directly contacts specific known peers by their addresses, or using multicast discovery, where membership messages are broadcast to a group and any listening node can respond and join. The choice depends on network constraints: unicast works well when multicast is blocked or not available, while multicast is convenient in networks that permit broadcast-style discovery. Since the platform supports either approach (and you can seed a known set of nodes for reliability), both methods can be used to join a cluster.

Clustering hinges on how a new runtime member finds and connects to existing peers. In a customer-hosted runtime plane, you can configure the cluster to join using unicast discovery, where a node directly contacts specific known peers by their addresses, or using multicast discovery, where membership messages are broadcast to a group and any listening node can respond and join. The choice depends on network constraints: unicast works well when multicast is blocked or not available, while multicast is convenient in networks that permit broadcast-style discovery. Since the platform supports either approach (and you can seed a known set of nodes for reliability), both methods can be used to join a cluster.