2006-12-25 CCNA Prep Center Skill http://www.cisco.com/go/prepcenter via IT Pro。 Cisco Routerの設定シミュレーションなど。 http://www.cisco.com/comm/applications/PrepCenter/Elabs/Configuring_RIP.swf Cisco Binary Gamehttp://forums.cisco.com/CertCom/game/binary_game_page.htm Network Calculatorshttp://www.subnetmask.info/ TechExams.Nethttp://www.techexams.net/