Computer services, namely, design and development of computer networks for others; design and development of computer software applications for others; computer systems analysis and engineering; design of computer graphics for others; computer project management services; IT consulting services; computer security consultancy; remote and on-site management of the information technology systems of others; technical consultation in the fields of computer systems and networks; and technical support services, namely, troubleshooting in the nature of diagnosing problems with computer systems and computer network hardware and software problems