Examinations 28 Certification 21 Electronic data processing personnel 18 Computer networks 7 Computer security 7 Linux 7 Application software 5 Development 5 Operating systems (Computers) 5 Computing Technology Industry Association 4 Virtual computer systems 4 Cloud computing 3 Computer technicians 3 Microcomputers 3 Red Hat, Inc 3 Security measures 3 Automation 2 Cisco Systems, Inc 2 Computer programmers 2 Maintenance and repair 2 Management 2 Robotics 2 Systems engineering 2 Amazon Web Services (Firm) 1 Application program interfaces (Computer software) 1 Computing platforms 1 Electronic data processing 1 Information technology 1 Internetworking (Telecommunication) 1 Java (Computer program language) 1