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802.11 Protocol Architecture
Review Questions
1.
When a station that is associated to an access point is performing
active scanning, on what channel does it send probe request
frames?
2.
For a given PHY, what two parameters are used to calculate the
value of DIFS?
3.
Name two Distribution System Services.
4.
In PCF mode, describe the situation that warrants the AP to send a
CF-End+CF-Ack frame.
5.
In PCF mode, what value found in the beacon is used to set (and
reset) a station’s NAV?
6.
In an 8011g network, the contention window on a first
transmission attempt has a maximum number of how many slots?
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