Computers and Electronics
Knowledge of circuit boards, processors, chips, electronic equipment, and computer hardware and software, including applications and programming.
Engineering and Technology
Knowledge of the practical application of engineering science and technology. This includes applying principles, techniques, procedures, and equipment to the design and production of various goods and services.
Mechanical
Knowledge of machines and tools, including their designs, uses, repair, and maintenance.
Repairing
Repairing machines or systems using the right tools.
Education and Training
Knowledge of principles and methods for curriculum and training design, teaching and instruction for individuals and groups, and the measurement of training effects.
Troubleshooting
Figuring out what is causing equipment, machines, wiring, or computer programs to not work.
Mathematics
Knowledge of arithmetic, algebra, geometry, calculus, statistics, and their applications.