#Virtual_gate

Question

Five wireless nodes—A, B, C, D, and E—are arranged in a line. Any pair of adjacent nodes are within range of each other, and nonadjacent nodes do not interfere. All nodes execute the Carrier Sense Multiple Access/Collision Avoidance (CSMA/CA) protocol with Ready to Send/Clear to Send (RTS/CTS) exchange prior to transmission. If the link bandwidth is L bits per second for successful transmissions and reliable transmission is desired, what is the maximum possible total bandwidth attainable for this network, in bits per second?

(A) L
(B) 2L
(C) 3L
(D) 5L

Comments

is ans 2l

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yes..please explain

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their are five station let us consider 1 station send data to 2 and 3 send data to 4. at this position all 1,2,3,4 are busy. and 5 cannot send data to anyone. therefore any combination we can have only 2 sender or 2 receiver. therefore 2l