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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?
Find the power factor for an RC circuit connected to a 70.0Hz generator with an rms voltage of 155 V
Three moles of nitrogen gas, N2, at 27.0°C are contained in a 25.8 L cylinder. Find the pressure the gas exertson the cylinder walls
A house painter uses the chair and pulley arrangement of the figure to lift himself up the side of the house. With what force must he pull down on the rope
A body of mass 2 kg is moving under the influence of a central force whose potential energy is given by U (r) = 2r3 Joule. If the body is moving in a circular orbit of 5m,then find its energy.
An ideal transformer has 255 loops in its primary coil and 125 loops in its secondary coil. what is the current in the secondary loop
An archer shoots a 100 g arrow straight up in the air. Calculate how high does the arrow rise assuming the force of air friction on the arrow averages 0.80 Newton during the upward flight
Suppose an asteroid is found that appears to be heading directly toward Earth (using Earth's location at the time of discovery). It is 4.2 A.U. away (i.e., 4.2 times the Earth-Sun distance), and travelling through the Solar System with a speed of ..
A 1000 kg roller coaster car starts from rest from a hilltop 60.0 m above the ground and moves (without power) down, what is the average frictional force between the car's wheels and the track
a piston with mass m 2.0 kg in a car engine is in vertical simple harmonic motion with amplitude a 5.0 cm. if the
an electron moves at a speed of 60.0 ms directly toward a stationary electron when the two electrons are 1.00 m apart.
a randomized trial is conducted to evaluate the efficacy of a new cholesterol lowering medication. the primary
question a runner beginning from x0 at t0 accelerates at a constant rate for 7 seconds and reaches a speed of 7msec.
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