3. Select the 802.11 layer that defines the characteristics and methods of transmitting and receiving data.
a. PLCP |
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b. PMD |
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c. LLC |
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d. MAC |
Answer: option b
PMD
for the following reason
PMD which is known as the physical machine dependent.
It is used to define the characteristics and methods of transmitting and receiving data
It is done with the help of wireless channels.
And rest of the options are wrong beause they deal with other functions
And plcp is responsible for_transferring mac protocol data units between 2 or more nodes in pmd layer
And mac layer is for encryption and fragmentation,
And phy is for the channel selection
So this three options does not suit the given statement
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