A Local Area Network (LAN) Containing a switch with 8 ports which connects an NMS(port 4), a printer (port 8), a server, and hosts A, B, C, and D. The LAN is connected to the Internet by router R (port 5). The following figure shows this LAN.

Ports 1 and 7 are down and the rest are up.

The NMS can detect that port 1 (is a "C" host) and port 7 ( is a server ) are down using traps or monitoring tools. Explain these two methods. Which method can locate the exact port number & Describe how the NMS can discover all active devices?

MS Printer erve Internet