Accounts Payable, Analysis Skills, BGP, Change Management, Cisco Catalyst Switches, Cisco Network Systems, Cisco Switches, Cisco Unified Communications Manager (CUCM), Citrix Product Family, Communication Skills, DHCP (Dynamic Host Configuration Protocol), DNS (Domain Name System), Defense Intelligence Agency (DIA), EIGRP (Enhanced IGRP), English Language, F5 BIG-IP, F5 Network Software, Financial Control, Firewalls, GRE (Generic Routing Encapsulation), IPsec (IP Security), Identify Issues, Internet Service Providers, Load Balancing, Local Area Network (LAN), MPLS (Multi-Protocol Label Switching), Network Administration/Management, Network Configuration Management, Network Operations Center, Network Routing, Network Switching, Open Shortest Path First Protocol (OSPF), PSTN (Public Switched Telephone Network), Performance Analysis, Problem Solving Skills, Root Cause Analysis, Routing Protocols, SIP (Session Initiation Protocol), Spanning Tree Protocols, Topology, VLAN (Virtual Local Area Network), VPN (Virtual Private Network), Wide Area Network (WAN), Wireless Communications, Wireless LAN, Writing Skills