Test #2 Topics Know the wireless propagation problems Understand what the “Golden Zone” is Understand the relationship between bandwidth and transmission speed Understand how wireless Ethernet works in a wired Ethernet network Know how wireless technologies deal with interference Know the different types of wireless LANs and their speeds Understand how CSMA/CA +ACK works Understand security problems with wireless Ethernet Understand the purpose of wireless Bluetooth

Test #2 Topics Understand the difference between circuit- and packet- switching Understand SONET rings and wrapping Know what increases the number of cell phone subscribers on a network Know advantages and disadvantages of VoIP Know the terms of telephone regulation Know the acronyms of telephone regulation – in book plus RBOC and UNE Understand why and how UDP is used for VoIP Understand the need for a WAN carrier Understand where analog and digital signaling is used in the PSTN

Test #2 Topics Understand 56k download/33.6k upload speed for dial up modems Understand how DSL works Know the issues of leased line connections Understand the differences between a leased line mesh and a PSDN Know the elements of Frame Relay pricing Understand the use of virtual circuits Understand the relationship between the leased line and port speed for Frame Relay Understand ATM cell length Understand the differences between Ethernet and ATM WANs Understand the attraction and limitations of VPN Know the benefits and drawbacks of the two popular security protocols for VPN Know the benefits and drawbacks of point-to-point, point-to-site, and site-to-site VPN Understand the “sharing” issue for cable modems Understand the latency issue for satellite