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We have three stations $P, Q, R$ connected in serial manner. $P$ is connected to $Q$ through a $3Gbps$ fibre optic link and length is $500Km$. $Q$ is connected to $R$ through $60Mbps$ link and length is $15Km$.All the links are full duplex in nature. A file is sent from station $A$ to $C$. Packet size is $1Kb$.We use sliding window protocol such that $\text{SWS=RWS}$. Find the optimal $\text{SWS}$.

  • $30$ packets
  • $32$ packets
  • $28$ packets
  • $29$ packets
asked in Computer Networks by Active (2.8k points)
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what is propagation speed ?
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nothing given in the question about pd.......can u tell by assuming it
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we can find propagation delay .length is given and propagation speed of fiber optic is approx 3*10^8
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Tp for P -> Q and Q->R is same ?
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shivanisrivarshini nothing mentioned in question

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Packet Size must be 1KB
I'm getting 38 though

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