A simple prompt pulls up an interface that resembles an online test environment. You get explanations for wrong answers and detailed feedback at the end.

Computer science involves much more than writing code. It blends technical knowledge —like programming, algorithms and data systems — with soft skills, such as communication and problem-solving.

Today's technologically advanced offices require job applicants to possess a solid foundation of computer skills. Even businesses that have not traditionally sought computer-savvy employees, such as ...