Which of the following describes a feature of Active-Passive Architecture?

Active-Passive Architecture is characterized by having one active node that handles all operations while one or more passive nodes are on standby, ready to take over if the active node fails. This design is implemented for high availability and ensures that there is a reliable backup that can quickly assume control without requiring a significant amount of time for recovery.

In this architecture, the passive node does not participate in the workload under normal circumstances; it remains idle but is fully synchronized with the active node's state to ensure a seamless transition in the event of a failure. This approach can enhance the resilience of the system rather than distributing the load across multiple nodes. Therefore, having a standby node for backup and failover encapsulates the main characteristic of the Active-Passive Architecture efficiently.

Conversely, the other options describe properties that do not align with this architecture's definition. For instance, multiple active nodes running simultaneously would be indicative of an Active-Active Architecture, while load balancing across nodes implies that all nodes share the workload, again not aligning with the singular active nature of Active-Passive setups. Moreover, the absence of redundancy contradicts the very purpose of the Active-Passive configuration, which is designed to offer failover capabilities through redundancy.