Electrical & Computer Engineering 241 Engineering & Applied Sciences 241 Telecommunications Computer networks 91 Security measures 46 Examinations 41 Certification 35 Internet telephony 26 Telecommunication 24 Internetworking (Telecommunication) 23 Telecommunications engineers 20 Electronic data processing personnel 18 Switching systems 16 Routers (Computer networks) 15 Extranets (Computer networks) 14 Computer Science 13 Management 13 TCP/IP (Computer network protocol) 13 Cisco IOS 11 MPLS standard 11 Local area networks (Computer networks) 9 Wireless LANs 9 Firewalls (Computer security) 8 Computer network architectures 7 Design and construction 6 Message processing 6 Software configuration management 6 Access control 5 Computer security 5 Business enterprises 4