I just passed this module and I suspect there are some issues with the questions there. For example, in question 27 Which two of these addresses are private IP addresses? (Choose two.) 127.16.71.43 is marked as correct answer, while 10.215.34.124 is not. I don't believe it is true.
Q 44. What are three characteristics of Ethernet 802.3?
a: based on the CSMA/CD process - this can not be a correct answer.
Any thoughts about that?