An active/passive configuration has an impact on:

Confidentiality relates to preventing unauthorized disclosure of data, which is addressed by encryption and access controls, not by active/passive failover configurations.

Integrity refers to ensuring data is accurate and unaltered, which is addressed by hashing, checksums, and data validation mechanisms, not by redundancy or failover topology.

Active/passive is a failover clustering or load-balancing architecture where one node handles traffic (active) while another stands by ready to take over (passive) if the primary fails. This design directly addresses availability by minimizing downtime and ensuring continuity of service during failures. It is a core high-availability (HA) strategy that has no inherent effect on data confidentiality, integrity, or non-repudiation.

Non-repudiation ensures that a party cannot deny performing an action, which is achieved through digital signatures and audit logging, not through active/passive system configurations.