LAN GATE 2018 Question #1508 with Solution

GATE 2018

Computer NetworksLANhardNAT2 marks

Nodes P and Q are at distance d meters. Carrier sense duration is 5 units of time. Transmission duration is 20 units of time. Signal propagation speed is 10 meters per unit time. P starts transmitting at t = 0 after carrier-sensing. Q receives a packet at t = 0 and begins carrier-sensing for 5 units of time. The maximum distance d (in meters) that allows Q to successfully sense P's signal before starting transmission (avoiding collision) is _______

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