A new monitoring device is installed in the network that uses ping to determine whether critical network Internet routers are up. After three missing pings, the alarm reports the device is down. The device is now constantly reporting alarms, yet there are no
reported Internet problems from users. Which of the following is the MOST likely cause?
A. A missing route on the alarm device.
B. Incorrect VLAN assignment on the router.
C. A missing route on the network routers.
D. Incorrect speed/duplex setting on the alarm device.