Networking Protocols -TCP/IP, RIP, IGRP, EIGRP, OSPF, BGP, QoS, MPLS
Switching Protocol - STP, VLAN, VTP, Etherchannel
Application Protocols - SNMP, SMTP, Telnet, FTP
Security - 802.11x , 802.1i
Network Simulator - Spirent AX 4000 (Adtech), OPNET
Operating Systems - Cisco IOS, IOS-XR, NX-OS, Linux
BGP
TCP/IP