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Suppose users share a 1 Mbps link. Also suppose that the traffic generation process of each user alternates (independently of the other users) between periods of activity (active modes), when the user generates data at a constant rate of 100 Kbps and periods of inactivity (inactive mode) when the user generates no data. Suppose further that the user is active (independent of other users) only 10 percent of the time. (1) When circuit switching is used to allocate resources on the shared link, how many users can be supported? (2) Suppose now that users are supported by using accordance with a packet switch- ing method, so that the communications channel is shared on a statistical mul- tiplexing manner (rather than being shared by using the synchronous (fixed) multiplexing techniques employed by the circuit switching system). Assume now that the communications channel is used to support a number of users that is 4 times larger than those supported under the circuit switching oper- ation. What is now the probability that more than 10 simultaneously active users cannot be accommodated at a given point in time? Equivalently, what is the probability that 11 or more users are simultaneously in active mode at a given time?
An air-track glider attached to a spring oscillates between the 10.0 cm mark and the 65.0 cm mark on the track. determine the maximum speed of the glider
if a force of 500n is needed to stretch a spring 2 cm, what force is needed to stretch 5cm
you have a 100.00 cm track inclined at 10.000 degrees. You roll a steel ball down the track until it drops off the track and falls 1.0000 m to the floor
Look at the thin soap film interference pattern in the picture for conceptual question 28-11. Why are the colors in horizontal stripes instead of circles or crazy swirls or vertical stripes?
What are magnitude and direction of the force
a 4.6 g bullet leaves the muzzle of a rifle with a speed of 320 ms. what force assumed constant is exerted on the
A model rocket blasts off from the ground, rising straight upward with a constant acceleration for a time of 1.90s. What is the maximum altitude of the rocket
The wavelength of a certain sound source is 2.4 mm in air and the speed of sound in air is 345 meter per second. Estimate the frequency of this sound source
A 75 kilogram person is exposed to 45 mrem of alpha particles (RBE=12). Find how much energy in Joules has the person absorbed
A particle moving at a speed of 0.92c is observed to have a mass of m=1682 MeV/c^2. Determine the rest mass Mo of the particle in kg
The latent heat of vaporization of H2O at body temperature (37.0°C) is 2.45E+6 J/kg. how many kilograms of water in the form of sweat have to be evaporated
Albert pushes a 6-kg box across a level floor. He pushes with a force of 43 newtons, and observes that the box accelerates in the direction of his push, What must be the net force acting on the box
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