Examinations 186 Certification 162 Electronic data processing personnel 143 Computer networks 97 Computer security 51 Security measures 42 Linux 38 Computer technicians 30 Operating systems (Computers) 24 Cloud computing 23 Management 23 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 Amazon Web Services (Firm) 11 Application software 11 Routing (Computer network management) 11 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