Engineering & Applied Sciences 290 Electrical & Computer Engineering 244 Telecommunications 241 Computer networks 215 Examinations 131 Certification 118 Security measures 92 Electronic data processing personnel 91 Computer Science 59 Internetworking (Telecommunication) 42 Telecommunication 36 Internet telephony 35 Telecommunications engineers 34 Management 33 Switching systems 27 Cisco IOS 25 TCP/IP (Computer network protocol) 25 Routers (Computer networks) 24 Computer security 23 Redes de ordenadores 23 Cisco Systems, Inc 21 Computer network protocols 21 Extranets (Computer networks) 20 Wireless LANs 20 Cloud computing 15 Telecomunicaciones 15 Computers 14 Design and construction 14 Firewalls (Computer security) 14 Local area networks (Computer networks) 14