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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
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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