What is a VLAN and why is it used, what are the advantages and challenges. What is STP. Describe a time where you helped a peer who was struggling, what did you do to help and what was the outcome. What are some Linux Directories and their uses. Describe everything you know about the DHCP process. Group Policy fails on a client, how would you troubleshoot this. Describe your most technically challenging issue and how you solved it. What is the difference between a switch and a router. Name some TCP and UDP ports/uses. What is the OSI model and why is it used.
