Examinations 1,226 Certification 902 Electronic data processing personnel 766 Computer networks 425 Computer security 209 Security measures 197 Engineering & Applied Sciences 175 Cloud computing 163 Computer technicians 128 Computer Science 127 Computing Technology Industry Association 108 Microsoft software 101 Telecommunications engineers 97 Microcomputers 88 Maintenance and repair 83 Management 83 Operating systems (Computers) 82 Linux 65 Electrical & Computer Engineering 61 Microsoft Windows server 57 Telecommunications 57 Microsoft Windows (Computer file) 51 Amazon Web Services (Firm) 50 Information technology 48 Development 46 Microsoft Azure (Computing platform) 43 Internetworking (Telecommunication) 41 Project management 41 Application software 40 Database management 38