Computer Networks question JNUEE 2006

Question

Sliding Window Protocol with Selective Reject/Repeat gives better performance than other protocols when

a) buffer is sufficient and bandwidth is limited

b) buffer is moderate and bandwidth is sufficient

c) buffer is moderate and bandwidth is limited

d) buffer is sufficient and bandwidth is sufficient

Answer 1

In case of selective repeat suppose sender is sending n packet then receiver has to wait for n packet .So buffer requirement is high in case of selective repeat .

In case selective repeat no of retransmissions are less so bandwidth requirement is limited.

So Option A is Correct.

Answer 2

Ans is (A)

Comments

how can you explain more?

Answer 3

Answer is-> A because in S&R se need  high buffer and modrate bandwidth..