Telecommunications engineers Certification 205 Examinations 191 Computer networks 134 Study guides 69 Internetworking (Telecommunication) 48 Security measures 34 Electronic data processing personnel 27 Routers (Computer networks) 22 Wireless LANs 22 Telecommunication 14 Switching systems 13 Computer security 9 Software configuration management 9 Problems, exercises, etc 8 TCP/IP (Computer network protocol) 8 Management 6 Remote access 6 Wireless communication systems 5 Computer technicians 4 Microsoft software 4 Routing protocols (Computer network protocols) 4 Firewalls (Computer security) 3 Internet 3 Certifiication 2 Directory services (Computer network technology) 2 Extranets (Computer networks) 2 Internet telephony 2 Measurement system 2 Multicasting (Computer networks) 2