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Consider the store and forward packet switched network where host A and B are connected via 2 routers R1 and R2 .
Assume Transmission time to be 1ms and Propagation time of link to be 5ms. If a message is divided into 6 packets
of equal length then total time to transfer message is _________ ?

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HERE FOR THE FIRST LINK BETWEEN SOURCE AND ROUTER 1 : TIME = 6*1 + 5 = 11

FOR REMAINING LINK WE USE CONCEPT OF PIPELINING.

BETWEEN ROUTER 1 AND ROUTER 2: TIME = 1 + 5 =6

BETWEEN ROUTER 2 AND DESTINATION: TIME = 1 + 5 = 6

-> TOTAL TIME = 11+6+6  = 23

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