18.4. Exam Essentials
Understand the advantages of using a dial-up connection.
Dial-up connections are generally cheaper and easier to configure than broadband connections. They are also available in more locations than broadband.
Know the speed of a BRI ISDN connection.
A BRI ISDN connection has two 64kbps B channels and one 16kbps D channel, for a total of 144kbps.
Know the maximum distance for several cable types.
UTP can go up to 100 meters. Thinnet coax can reach 185 meters. Multimode fiber generally is good for up to 400 meters, and single-mode fiber can run as long as 40 kilometers.
Know the maximum data rate and range of 802.11b and 802.11g.
Both have a maximum indoor range of about 40 meters and an outdoor range of about 140 meters. ...
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