with more illustrations wherever possible fetches bonus marks Total Marks 50 Q1 carrie s 15 Marks rest 5 Marks each 1 Answer the following queries on IEEE 80211e MAC protocol a Descr ID: 269115
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Compact and crisp writing with more illustrations ( wherever possible) fetches bonus marks. Total Marks 50 (Q1 carrie s 15 Marks , rest 5 Marks each ) 1. Answer the following queries on IEEE 802.11e MAC protocol. a. Describe how IEEE 802.11e provides prioritized service to multimedia traffic? b. If a node has both video tr affic and best - effort traffic in its MAC queues, when will best - effort frames get delivered? After delivery of video frames? Is it fair? Explain. c. What is the role of virtual collision handler module i n 802.1 1e? d. How do you related 802.11e with 802.11a/b/g/n? e. What is TXOP interval? Is it constant? Do all Access Categories have TXOP intervals? Why or why not? 2. Briefly ex plain how 802.11n can able to deliver MAC throughput s of 100 Mbps and higher ? 3. What measures are taken in 802.11g so that it is backward compatible with 802.11b ? What is the main difference in f unct ioning of AP when we configure it in 802.11g mode versus 802.11b/g mode? 4. Briefly explain new power saving features introduced in 802.11n standard. 5. Captu re Beac on frames sent by an 802.11g AP and an 802.11 n AP in IITH campus. Compare and contrast th em. 6. Briefly describe how to impl ement roaming service in enterprise WLAN? 7. What is “ Wi - Fi Direct ” standard? How is it related to Ad hoc mode operation of Wi - Fi radios? 8. Briefly explain how 802.11i standard addresses security vulnerabilities of WEP and WPA .