Internetworking (Telecommunication) Computer networks 213 Certification 112 Examinations 101 TCP/IP (Computer network protocol) 74 Electronic data processing personnel 65 Computer network protocols 55 Routers (Computer networks) 52 Study guides 49 Telecommunications engineers 48 Local area networks (Computer networks) 47 Telecommunication systems 29 Telecommunication 28 Mobile communication systems 27 Design and construction 21 Internet telephony 21 Wireless communication systems 19 Software configuration management 15 Internet 14 Switching systems 13 Client/server computing 12 Ad hoc networks (Computer networks) 11 Computer network architectures 11 Management 11 Data processing 10 Network performance (Telecommunication) 10 Wide area networks (Computer networks) 10 Routing protocols (Computer network protocols) 9 Asynchronous transfer mode 8 Long-Term Evolution (Telecommunications) 8