DATA LINK LAYER WIRED NETWORKS
MULTIPLE ACCESS PROTOCOLS MAC
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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probability outcome
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random outcome
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continuous outcome
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none of the above
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Detailed explanation-1: -The P-persistent method is used if the channel has time slots with a slot duration >= the maximum propagation time. Your question is “how to select that Probability". Then, Np is the expected number of nodes that will attempt to transmit once the medium becomes idle. If Np > 1, then a collision is expected to occur.
Detailed explanation-2: -The Non-persistence sends when the channel is idle. The 1-persistent will continuously sense the channel for the frames transmission, it will not wait. The Non-persistent waits for the random amount of time to check the carrier. In 1-persistence the chance of collisions is more.
Detailed explanation-3: -The Non-persistence sends when the channel is idle. The p-persistence will wait for the next slot for the frames transmission. The Non-persistent waits for the random amount of time to check the carrier. In p-persistence the chance of collisions is less when compared to non-persistent.
Detailed explanation-4: -1-Persistent, Non-Persistent, P-Persistent, and O-Persistent are the three access methods of CSMA.