snows th nas efficiency or percent), one 1. Suppose that 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 packet lifetime is 60 sec. How often need resynchronization take place A. (a) in the worst case? (a) The clock takes 32768 ticks, i.e., 3276.8 sec to cycle around. At zero generation rate, the sender would enter the forbidden zone at 3276.8 - 60 = 3216.8 sec. B. (b) when the data consumes 240 sequence numbers/min?. (b) At 240 sequence numbers/min, the actual sequence number is 4t, where t is in sec. The left edge of the forbidden region is 10(t - 3216.8). Equating these two formulas, we find that they intersect at t = 5361.3 sec.