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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?
Derive a formula, similar to equation 5.90 which was T-Tnot = (nB*k*Tnot^2)/L for the shift in the freezing temperature of a dilute soution. calculate the freezing temperature of seawater
the volume of an ideal gas changes from .40 to .56 cm3 although its pressure remains constant at 50000 Pa. what work is done on the system by its environment
A process is capable with a Cp ot Pp
A television broadcast antenna is located at the top of a steep tall mountain. The television station broadcasts by a power of4.00 kilowatts at a frequency of 180.0 MHz. (rms =“Root Mean Square"= square root of the average value of a function squared..
Why is a hot air balloon stiff? Is the pressure inside the balloon higher than the pressure outside (atmospheric pressure)? If the pressure inside is higher than the outside, how is it explained with ideal gas law?
A certain slide projector has a lens of focal length 15 centimeter. Obtain how far from the lens should the screen be located
alpha particles of charge q 2e and mass m 6.6 x 10-27 kg are emitted from a radioactive source at a speed of 1.5 x
You are at the controls of a particle accelerator, sending a beam of 3.90×107m/s protons (mass m ) at a gas target of an unknown element. What is the speed of the unknown nucleus immediately after such a collision
A loop of wire has the shape shown in the drawing. The top partof the wire is bent into a semicircle of radius r = 0.25m. The normal to the plane of the loop is parallel to a constantmagnetic field of magnitude 0.94 T.
Calculate the capacitance of two flat metal pie pans 22.0 cm in diameter separated by 2.5 mm
A 2.0 kg cart has a spring with k = 5000 N/m attached to its front, parallel to the ground. What is the speed of each cart after the collision
how does the force curve compare to the distance curve? what differences are there? what would you say is the
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