Examinations 186 Certification 161 Electronic data processing personnel 142 Computer networks 96 Computer security 52 Security measures 41 Linux 38 Computer technicians 30 Operating systems (Computers) 24 Management 23 Cloud computing 22 Computing Technology Industry Association 20 Maintenance and repair 16 Microcomputers 16 Telecommunications engineers 15 Development 12 Information technology 12 Systems engineering 12 Virtual computer systems 12 Application software 11 Routing (Computer network management) 11 Amazon Web Services (Firm) 10 Red Hat, Inc 10 Web services 9 Client/server computing 8 Engineering & Applied Sciences 8 Computer Science 7 Microsoft Windows server 7 Penetration testing (Computer security) 7 Microsoft Windows (Computer file) 6