challenge: What happens when an autonegotiating device is connected to a non-autonegotiating device?
  
  A. The autonegotiating device uses half duplex and the non-autonegotiating device uses full duplex
  B. The connection fails and no data is transmitted
  C. The autonegotiating device correctly detects both speed and duplex mode
  D. The autonegotiating device uses full duplex and the non-autonegotiating device uses half duplex
  Answer: 