[NFBCS] accessibility question about Packet Tracer, Wireshark, and Draw.io

[Brian Buhrow]

	hello.  Wireshark is a graphical user interface built on top of a program called tcpdump.
Tcpdump is a command line text based program that is completely accessible.  Learn how to use
tcpdump in addition to Wireshark, which is, I think, partially accessible.  If you  learn
tcpdump, I think you'll be able to do everything in your class using a combination of tcpdump
and Wireshark.

-Brian