1 votes 1 votes in csma/cd which formula is right 1 .transmission delay >= 2 * propagation delay 2.transmission delay <= 2 * propagation delay hem chandra joshi asked Jul 22, 2017 hem chandra joshi 507 views answer comment Share Follow See all 4 Comments See all 4 4 Comments reply Deepak Kumar 12 commented Jul 22, 2017 reply Follow Share always .transmission delay >= 2 * propagation delay because sender has capacity of collision detection until sender do not transmit all data. Assume At time t=1:00 pm, a frame is sent on the idle medium by A. At time t=1:59 pm, NIC B also transmits.(In this case, the medium, as observed by the B happens to be idle too). At t=2:00 pm, collision detection. At t=3:00 pm, A detect collision After one complete round trip propagation time (twice the one way propagation delay), both station are aware of the collision. B will shortly cease transmission of the Jam Sequence, however A will continue to transmit a complete Jam Sequence. Finally the cable becomes idle. 4 votes 4 votes Palash Moon commented Jul 24, 2017 reply Follow Share is this a formula for min transaction time? 0 votes 0 votes Deepak Kumar 12 commented Jul 24, 2017 reply Follow Share In worst case 0 votes 0 votes SSrawat commented Sep 18, 2017 reply Follow Share min transmission delay 0 votes 0 votes Please log in or register to add a comment.
0 votes 0 votes option 1 1gate_cracker answered Oct 31, 2017 1gate_cracker comment Share Follow See all 0 reply Please log in or register to add a comment.