Refer to the exhibit. An administrator received a call from a branch office regarding poor application performance hosted at the headquarters. Ethernet 1 is con...

Refer to the exhibit. An administrator received a call from a branch office regarding poor application performance hosted at the headquarters. Ethernet 1 is connected between Router1 and the LAN switch. What identifies the issue?

A. The MTU is not set to the default value. B. There is a duplex mismatch. C. The QoS policy is dropping traffic. D. The link is over utilized.