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Question of the Month Uppingham Ultimate University (UUU) needs to install a video on demand training system for its students. Most students use the wireless LAN for connectivity, and there are currently 150 wireless LAN users and ten 802.11b-compliant access points. UUU has realized it needs a solid security approach and has chosen to segment wireless users from the network backbone using the old Internet firewall appliance that they recently replaced with a newer model. Find the answer here. Read more here.... Routing, UDP, and the DNS Host vs. router Routing mechanism --- search routing table to determine which interface to send a packet out Routing policy --- set of rules for deciding which routes are entered into the routing table The mechanism: Match host address Match network address Use default entry (if possible) ICMP redirect messages. Read more here.... Ethernet—A Brief History The original Ethernet was developed as an experimental coaxial cable network in the 1970s by Xerox Corporation to operate with a data rate of 3 Mbps using a carrier sense multiple access collision detect (CSMA/CD) protocol for LANs with sporadic but occasionally heavy traffic requirements. Success with that project attracted early attention and led to the 1980 joint development of the 10-Mbps Ethernet Version 1.0 specification by the three-company consortium: Digital Equipment Corporation, Intel Corporation, and Xerox Corporation. Cisco Certification Tracking Tool |
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