Which two factors must be considered for high availability in campus LAN designs to mitigate concerns about unavailability of network resources? (Choose two.)

Device resiliency encompasses hardware redundancy features such as dual power supplies, redundant supervisor engines, and protocols like Non-Stop Forwarding (NSF) and Stateful Switchover (SSO), ensuring that the failure of a single component does not take down a node.

Device type (switch, router, firewall) categorizes equipment but does not itself determine availability - any device type can be deployed with or without redundancy mechanisms.

Network type (LAN, WAN, wireless) is a classification used for design scoping but is not a factor that directly mitigates resource unavailability in campus HA design.

Network resiliency involves redundant physical topologies, dual uplinks, and Layer 2/3 protocols such as Rapid PVST+ or VSS/StackWise Virtual so that any single link or node failure has an automatic failover path maintaining connectivity.

Network size affects scalability and capacity planning but is not a primary factor for ensuring high availability against device or link failures.