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Question :
(a) List down and explain the different signal propagation behaviours that radio waves exhibit.
(b) Explain the term Delay Spread with reference to signal propagation
(c) Infra Red and radio transmission are the two different basic transmission technologies that can be used to set up WLANs. Explain why radio transmission is preferred when setting up a Wireless LAN in an institution compared to infra red.
(d) IEEE 802.11 Infrastructured network has basic components such as Stations, Access Points and distributed System.
(i) Give a brief description of the functioning of an Infrastructured Network.
(ii) Show down the main functions of the Access points.
(e) Why do collisions occur in an infrastructure wireless network? Give a solution to remedy to this situation.
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Control Frame: set_successor Station X wants to leave Successor S Predecessor P X sends set_successor frame to P With S as data field P changes its
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Q. Why it is essential to have layering in a network? Ans: A computer network is a very complicated system. It becomes very hard to implement as a single entity. The layered ap
Disadvantages of Fiber Optics - Installation/maintenance - Unidirectional - Cost
Can you describe the concept of OSI layer
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