.On Tuesday evening, the company just pushed a new Windows 10 security update to all of its workstations. On Wednesday morning, the help desk receives numerous complaints about the network being slower than normal. Previously, the network was baselined at 1 Gbps as each workstation uses a wired CAT 6 connection. Today, a technician ran a speed test and saw the network was only reaching speeds of 100 Mbps. Which of the following is the MOST likely cause of the network slowdown?

A. The network card drivers were updated last night
B. The network was reconfigured from DHCP to static
​C. The incorrect DNS server configuration is being used
​D. The incorrect DHCP server configuration is being used