A network administrator is reviewing an audit and assessment report for the company network. The report indicates a historical issue with packet collisions that has led to increased latency and decreased performance on one segment of the network. Given this information, which of the following actions should the administrator prioritize to mitigate this issue?
Switch the affected segment to full-duplex mode.
Implement Quality of Service (QoS) on the network.
Replace all CAT5e cables with CAT6 cables.
Upgrade the affected segment from CAT5e cables to fiber optic cables.