Suppose we have the following record of packet transmission times between a sender (S) and recipient (R) for a given day:

9:00 a. m. S to R 10 seconds, R to S 10 seconds
9:01 a. m. S to R 11 seconds, R to S 9 seconds
9:02 a. m. S to R 8 seconds, R to S 14 seconds
9:03 a. m. S to R 12 seconds, R to S 6 seconds
10:00 a. m. S to R 20 seconds, R to S 20 seconds
10:01 a. m. S to R 22 seconds, R to S 18 seconds
10:02 a. m. S to R 16 seconds, R to S 28 seconds
10:03 a. m. S to R 24 seconds, R to S 12 seconds

At 10:04:00 we send a packet. Assuming adaptive retransmission, what is the most appropriate amount of time to wait without receiving an acknowledgment from the would-be recipient, before resending the packet?

Suppose an astronomer discovers a large, spherical-shaped body orbiting the sun. the body is composed mostly of rock, and there are no other bodies sharing its orbit. what is the best way to categorize this body? a. planet b. moon c. comet d. asteroid

Stacy works as blank. the most important soft skill she needs for this role is blank.

When making changes to optimize part of a processor, it is often the case that speeding up one type of instruction comes at the cost of slowing down something else. for example, if we put in a complicated fast floating-point unit, that takes space, and something might have to be moved farther away from the middle to accommodate it, adding an extra cycle in delay to reach that unit. the basic amdahl's law equation does not take into account this trade-off. a. if the new fast floating-point unit speeds up floating-point operations by, on average, 2ă—, and floating-point operations take 20% of the original program's execution time, what is the overall speedup (ignoring the penalty to any other instructions)? b. now assume that speeding up the floating-point unit slowed down data cache accesses, resulting in a 1.5ă— slowdown (or 2/3 speedup). data cache accesses consume 10% of the execution time. what is the overall speedup now? c. after implementing the new floating-point operations, what percentage of execution time is spent on floating-point operations? what percentage is spent on data cache accesses?