CCNA3 Chap 7 Study Answers

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CCNA3 Exploration Chapter 7 [Study questions] 7.1 What are the advantages o !ireless net!or"s over #a$led net!or"s% People can stay in contact with their work while they are travelling. People can move within a building without cables having to be moved. A business can move into a new building that does not have network cabling, and it is not necessary to run cables to each workstation, which saves on cost, though some cabling will still be needed. &ver !hat range o distan#e !ould 'luetooth te#hnology $e used% Short range, for example between a peripheral device and a PC. &ver !hat range o distan#e !ould the ()*.11 standard $e used% Medium, in A!s "on one site# and MA!s "on sites within the same town$city#. At !hi#h &S+ layers is the dieren#e $et!een #a$led and !ireless net!or"s i,portant% ayers % and & "physical and data link#. What potential pro$le,s o a !ireless -AN are not signii#ant on a #a$led -AN% 'nterference, and the ability of anyone to receive a transmission if they have a receiver within range. (ireless is also sub)ect to regulation which may vary from country to country, oes the ()*.11 standard use CS/A0C% !o. 't uses collision avoidance rather than collision detection and recovery. o! #ould a !ireless2ena$led laptop ,a"e a #onne#tion to a !ired Ethernet net!or"% 't can connect through a wireless access point "AP# that is attached to the network by a cable. What !ere the advantages and disadvantages o using the ()*.11$ standard rather than the ()*.11a standard% *+&.%%b was cheaper, it was less easily obstructed by walls etc, and it could have a longer range. n the other hand, it was slower, maximum rate %% Mbps as opposed to - Mbps. 't used the &. /01 band rather then the - /01 band, which led to more interference as many appliances use the &. /01 band. SW 1/26/2014 206553086.doc 1

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