mHomework 6 - WLAN

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IFT372 Assignments Dr. Jim Helm Homework – Module 6 WLAN 1. What are the differences between the ‘ad hoc’ and ‘BSS’ modes of WLAN? 2. Which additional functionalities can often be found in WLAN APs? 3. What is an ESS? 4. What is an SSID and in which frames is it used?
IFT372 Assignments Dr. Jim Helm 5. What kinds of PS mechanisms exist in the WLAN standard? 6. Why are ACK frames used in a WLAN? 7. Why do 802.11g networks use the RTS/CTS mechanism? 8. Why are three MAC addresses required in BSS frame?
IFT372 Assignments Dr. Jim Helm 9. How can a receiving device detect the speed at which the payload part of a frame was sent? 10. What is the maximum transfer rate that can be reached in a data transfer between two 802.11g devices in a BSS? 11. What disadvantages does the DCF method have for telephony and video streaming applications? 12. (a) Which security holes exist in the WEP procedures, and (b) how are they solved by WPA and WPA2 (802.1x)?
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IFT372 Assignments Dr. Jim Helm

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