Examinations 6 Certification 5 Computer networks 5 Electronic data processing personnel 5 Switching systems 5 Telecommunication 5 Engineering & Applied Sciences 4 Internetworking (Telecommunication) 4 Telecommunications engineers 4 Electrical & Computer Engineering 3 Telecommunications 3 Routing (Computer network management) 2 Routing(Computer network management) 2 Cisco IOS 1 Computer Science 1 Routers (Computer networks) 1