You are hired to design a solution to improve network availability for users on a campus network with routed access. Which two recommendations should you make in your design proposal? (Choose two)

Standby route processors configured for SSO (Stateful Switchover) in access switches allow seamless failover without dropping routing adjacencies or user sessions, directly protecting availability for end users at the access layer in a routed access design.

SSO in core routers improves core-layer resilience but does not address the access layer, which is where user connections terminate in a routed access model.

Redundant power supplies in access routers eliminate single points of hardware failure at the power level, ensuring that a single power supply failure does not take down the switch and disconnect users.

SSO in distribution routers improves distribution-layer availability but does not directly protect the access switches that serve end users in a routed access design.

Replacing copper with fiber reduces media-related failures but does not provide the processor or power redundancy needed to maintain routing and availability during hardware faults.