1. i. ii. iii. iv. v. List out a two commonly seen WLAN devices? What role does each of them play in creating the WLAN network infrastructure? Explain the characteristics of IEEE 802.11 standards, then briefly discuss how does this compare to IEEE 802.11 a/b/g and what is the outlook for the future WLANs? With the help of necessary diagrams, compare Wi-Fi, Bluetooth, and WiMAX technologies. Explain the main properties of spread-spectrum techniques used in the wireless LAN. In a Frequency Hopping Spread Spectrum (FHHS) system, a hopping bandwidth of 100MHz and a frequency spacing of 10 KHz is used. What is the minimum number of PN chips that are required for each frequency symbol? (Total 20 Marks)