Technical Resources

Reference library

All Reference Topics

Twelve subject areas covering the breadth of information technology, from networking fundamentals to power systems and the certifications that validate each discipline.

Operating Systems

Operating Systems

What does an operating system do and how do you administer one?

Cybersecurity Basics

Cybersecurity Basics

What does cybersecurity involve and how do you protect a network?

Cloud and Virtualization

Cloud and Virtualization

How does cloud computing work and what is the difference between virtual machines and containers?

Computer Hardware

Computer Hardware

What are the main components of a computer and how do they work together?

Databases and SQL

Databases and SQL

How do relational databases work and what SQL do I need to know?

Troubleshooting

Troubleshooting

What is the right process for diagnosing and fixing an IT problem?

Technical Resources publishes vendor-neutral educational information about information technology. It is general reference material, not professional, safety, legal, or warranty advice, and it is not affiliated with, endorsed by, or sponsored by any vendor, certification body, or manufacturer named on the site. Product names, standards, and certification programs are referenced for identification and education only and belong to their respective owners. Technology, standards, exam objectives, and safety guidance change over time, so always verify any decision-critical detail against the current official documentation for your specific hardware, software, standard, or exam before you rely on it. Procedures involving electricity, batteries, or live equipment can be hazardous; follow the manufacturer's instructions and applicable safety codes, and consult a qualified professional when in doubt.