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Computer Networks - Protocols


Let the clock-driven scheme for generating initial sequence numbers is used with a 15-bit wide clock counter. The clock ticks once every 100 msec, and the maximum poacket lifetime is 60 sec. How often need resynchronization take place when the data consumes 240 sequence numbers/min?


3261.3 sec


4261.3 sec


5361.3 sec


6261.3 sec


Option: C

Explanation :

At 240 sequence numbers/min, the actual sequence number = 4t
where t is in sec.
Left edge of the forbidden region
          = 10 (t - 3216.8).
Equating these two formulas, we find that they intersect at t = 5361.3 sec 

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