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COMP SCI 4092 Mobile And Wireless Networks

tag 0 Download 8 Pages / 1,856 Words tag 15-07-2021

Question:

1 Compare and contrast the inner workings of physical layers for 802.11b and 802.11a standards.

a. Explain how 802.11i allows for a client device to be authenticated against an authentication server. 
b. Discuss the usage of a virtual private network in establishing an encrypted secure communications channel between two points on a public network. 

3 Suppose your company needs your help with WMAN project. ZeeTech is a multinational import-export company. Because ZeeTech has grown in popularity, it now has five offices in Melbourne. ZeeTech is considering implementing a WMAN technology that will link all its offices as well as provide mobile wireless access to the field workers that need to travel between different sites in a city. ZeeTech would install a WMAN in each office and provide its office employees and field workers the tablet computers and mobile phones for better customer service and marketing. For this reason you are asked to perform a comparative study on different WMAN technologies. Your report should briefly describe your chosen technology as well as justify why your chosen technology is most suitable in terms of cost of service, data capacity, service area, speed of installation, and security. Please note, this is a fictional case study and you should assume that all five offices are medium size with 40 employees in each office and around 400 daily customers/clients on average. 

4 Discuss the three different multiple access technologies used with 2G: time division multiple access (TDMA), code division multiple access (CDMA), and global system for mobile communications (GSM). 

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