Routing (Computer network management) Certification 6 Examinations 6 Packet switching (Data transmission) 6 Electronic data processing personnel 4 Equipment and supplies 4 MPLS standard 4 Network processors 4 Study guides 4 TCP/IP (Computer network protocol) 4 Computer networks 3 Extranets (Computer networks) 3 Optical communications 3 Automatic control 2 Data flow computing 2 Data transmission systems 2 Integrated circuits 2 Management 2 Monitoring 2 Multicasting (Computer networks) 2 Packet switching 2 Switching systems 2 Telecommunication 2 Telecommunications engineers 2 Very large scale integration 2 Wireless LANs 2 Fault-tolerant computing 1 Reliability 1 Routing 1 TECHNOLOGY & ENGINEERING / Telecommunications 1