I'm currently taking a couple of networking courses at the local community college, one of the courses is the Cisco CCNA-1 course.
Since I already know most of this stuff, and am simply taking the courses for the certification, I'm having a grand time correcting errors in the texts..

Both of the texts refer to 8p8c modular plugs as "RJ-45", and the cisco text refers to 9 pin D-sub connectors as "DB-9".

What is this world coming to, when the certification courses can't even get the terminology correct?