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Wireless Networks
Consider a warehouse that is 60m by 30m. Wireless networking is required so that up to 20 staff members working in the warehouse can track stock movements and perform stock checks using mobile devices.
(a) Assume that the useful range of WiFi within the warehouse will be 15m radius. Design a simple layout of omni directional antennas to cover the entire warehouse. Show the channel to be assigned to each antenna, taking care to minimise interference between the coverage areas. Briefly explain any key design decisions you have made. [1 diagram, up to 150 words]
(b) Which WiFi flavour (a, b, g, n, ac, ad, or other) would you recommend for this new installation? Discuss the options and justify your choice. [Up to 200 words]
(c) Would you recommend security for this network, and if so, what type of security?
Discuss the options and justify your choice. [Up to 200 words]
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two hosts, A and B, are separated by 20,000 kilometers and are connected by a link of R=2 Mbps, and there are 4 routers between A and B. Suppose the propagation speed over the link is 2.5*108 meters/sec, average queueing time is 2ms,
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