Analysis Skills, Automation, BGP, Cisco Network Systems, Computer Networks, DHCP (Dynamic Host Configuration Protocol), DNS (Domain Name System), Failover, Firewalls, IPsec (IP Security), Identify Issues, Interoperability, Local Area Network (LAN), Multicast, NAT (Network Address Translation), Network Administration/Management, Network Architecture/Engineering, Network Operations Center, Network Support, Open Shortest Path First Protocol (OSPF), Operating Systems, Personal Area Network (PAN), QoS (Quality of Service), Radio Frequency, Remote Access, TCP/IP (Transmission Control Protocol/Internet Protocol), VLAN (Virtual Local Area Network), VPN (Virtual Private Network), Wide Area Network (WAN), Wireless Communications, Wireless LAN, Wireshark (Ethereal)