Certification 771 Electronic data processing personnel 771 Examinations 704 Computer networks 300 Computer security 152 Engineering & Applied Sciences 119 Security measures 116 Computer Science 101 Computer technicians 97 Cloud computing 89 Microsoft software 78 Computing Technology Industry Association 66 Microcomputers 64 Maintenance and repair 61 Management 54 Operating systems (Computers) 52 Linux 48 Microsoft Windows server 45 Microsoft Windows (Computer file) 37 Telecommunications engineers 35 Information technology 34 Amazon Web Services (Firm) 27 Electrical & Computer Engineering 27 Client/server computing 25 Telecommunications 25 Database management 24 Routing (Computer network management) 22 Virtual computer systems 22 Web services 22 Internetworking (Telecommunication) 21