Cisco Router: static, RIP/RIP2, EIGRP, OSPF. Cisco Switches L2/L3: VLANs and VLANs InterVLAN routing, Spanning Tree (CST,PVST+,RSTP,PVRST+,MSTP),trunking 802.1Q/ISL, VTP, EtherChannel L2/L3.Wireless: SSID,WEP/WPA/WPA2.
Criptography: Symmetric, asymmetric, hashing. ACL, AAA, DMZ, NAT/PAT, threats, security policy, endpoint, PKI, IPsec VPNs, IOS firewall, Cisco IOS IPS.TCP/IP, Frame Relay, PPP, VPN. ARP, DHCP, DNS, FTP, HTTP/HTTPS, ICMP, Email Protocols, IPV4/6, Telnet/SSH.