An organization is experiencing poor network performance. During peak operation hours, employees report significant delays when accessing cloud-based CRM software, which affects their workflows. As a network technician troubleshooting this issue, which course of action is likely to be most effective in resolving the throughput bottleneck?
Update the Ethernet drivers on all client workstations.
Upgrade the WAN link to a higher bandwidth plan.
Replace all CAT5e cables with CAT6 to improve data transmission speeds.
Search for and eliminate any rogue DHCP servers on the network.