Contemporary Controls has published a new technical guide that will prove valuable to every engineer when attempting to take the frustration out of solving network problems. Titled The ABCs of Ethernet Troubleshooting, this guide asks 22 common questions to consider when troubleshooting a network. The questions include "Do the link LEDs indicate proper cable connections?" and "Are you connecting a single-mode fibre-optic device to a multimode fibre-optic device?" Other questions refer to auto-negotiation, Auto-MDIX, the DHCP server, TCP/IP for communication, IP addresses, managed switches, and more.