You are hired to design a solution that will improve network availability for users on a campus network with routed access. If the budget limits you to three components, which three components would you recommend in your design proposal? (Choose three.)
A . redundant power supplies in the access routers
B . standby route processors for SSO in the core routers
C . standby route processors for SSO in the distribution routers
D . standby route processors for SSO in the access routers
E . replace copper links between devices with fiber links
Answer: ADE