Learn with analogies and drawings
Articles
Plain-language guides to the IT support problems you meet at work and in interviews, each with a lab to try it yourself.
IT Support Ethics: What to Do and What Never to Do
IT support holds a key to everything in the company. The rules that make people trust you: privacy, passwords, permissions, honesty, and respect for users' work, with real situations.
IT Troubleshooting Steps: A Simple Method for Help Desk Tickets
A six-step way to work any help desk ticket: hear the story, find the edges, pick a cause, change one thing, confirm with the user, and write it down. With worked examples and everyday analogies.
IT Support Interview Questions and Answers (Help Desk)
The help desk interview questions that come up most, with short, clear answers: networking, Windows and Active Directory, troubleshooting, and working with users.
T568B Wiring Order (and T568A): Ethernet Cable Color Code Explained
The order of the eight wires in an RJ45 plug for T568B and T568A, straight-through vs crossover cables, how to test a cable, and the most common cable faults and their symptoms.
What Does a 169.254 IP Address Mean? And How to Fix It
A 169.254 address (APIPA) means the PC couldn't get an address from a DHCP server. The common causes, how to diagnose it step by step, and the ipconfig commands you need.