Consider a variation of CSMA, whereby all stations that overhear an ongoing data
ID: 3701506 • Letter: C
Question
Consider a variation of CSMA, whereby all stations that overhear an ongoing data exchange transmit a busy tone. The busy tone is transmitted out-of-band so as to not interfere with the data exchange. All stations that hear the busy tone refrain from contending for the medium (keep silent). Such a solution:
(a)Addresses the hidden node problem, but not the exposed node problem.
(b)Addresses the exposed node problem, but not the hidden node problem.
(c)Addresses both the hidden node and the exposed node problems.
(d)Does not address either the hidden or the exposed node problem.
(e)Addresses the near-far problem.
Explanation / Answer
Solution:
(a) Addresses the hidden node problem, but not the exposed node problem.
Explanation:
Because when the data transmission is going on between two nodes, let's A and B then it's neighbors will hear the busy tone and as soon as they hear it they will also alarm the busy tone, but suppose there are two nodes which want to share data named as C and D, which doesn't interfere with A and B, will be refrain from transmission.
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