What are two descriptions of network optimization? (Choose two.)

Identifying network requirements is an activity that belongs to the network planning and design phase, not to the optimization phase which focuses on improving an existing network.

Network redesign involves restructuring topology, routing, or configuration to eliminate bottlenecks and improve throughput, making it a direct and core description of the optimization process itself.

Proactive network management involves continuously monitoring network behavior and addressing potential issues before they degrade performance, which is a defining characteristic of an optimization strategy rather than reactive operations.

Network health maintenance refers to ongoing day-to-day operational upkeep to sustain current performance levels, which is distinct from the structured improvement activities that define optimization.

Maintaining high availability is an operational objective and a design outcome, not a description of the optimization process or its techniques.