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802.11g OFDM
a) Uses OFDM with same 2.4 GHz band
b) Achieves a 54-Mbps data rate
c) Works with same 802.11b equipment
The Five steps to data encapsulation (IN ORDER): 1) User information is changed into data. 2) Data is changed into segments. 3) Segments are changed into datagram and pack
Urgent Pointer This 16 bite which is valid only f the urgent flag is set is used when the segment contains urgent data. If defines the number that must be added t
Local information is immediate hop routing table and distance from every switch. The switches regularly broadcast topology information i.e. distance, destination. Other switches mo
Control Frame: solicit_successor Periodically ask for any station to link by sending solicit_successor Token with sender's addr and successor's addr wait 2 (as in
Q. Show the process of Mail Delivery? Mail Delivery -Consists of three stages -First stage - email goes from user agent to local server, where it is stored until it ma
Q. Single Mode for transmitting optical signals? - Merely one beam from a light source is transmitted using a smaller range of angles - Smaller diameter as well as lower de
Cell splitting In practice, the distribution of traffic and topographic features is not uniform, and this shows opportunities of capacity enhance. Cells in areas of high usage
What is Piggy Backing? A process called piggybacking is used to get better the efficiency of the bidirectional protocols. When a frame is carrying data from A to B, it can also
Q. Explain about Flow Control? - Signifies to ask the transmitter to stop/resume sending in data - Required when DTE to DCE speed > DCE to DCE speed - (Exampl
what is the differnce between noise and distortion
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