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Discuss how big is a physical PDU (protocol data unit)? The answer to this question determines the number of simultaneous transmissions for many network architectures.
If a signal propagates through copper wire at the rate of 2*10^8 meters per second, then on a carrier running at 10 Mbps the length of each bit pulse is given by:
Speed of propagation / Speed of bus = 2*10^8 m/s / 10*10^6 b/s = 20 meters/bit
If a data frame is 512 bits long, then the entire frame occupies:
(Length of one bit) x (Frame size) = 20 x 512 = 10240 meters.
a. How big is a 1024-bit packet if the network runs at 100 Mbps?b. How big is it if the network speed is increased to 155 Mbps?c. At 100 Mbps, how much time elapses as one of these frames passes a particular point in the network?
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The distance from the point on the surface of Earth to a point on a surface of the moon is measured by aiming a laser light beam at the reflector on the surface of moon and measuring the time required for the light to make a round trip.
What is the least coating thickness required
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A cluster of galaxies has a radius of about 5.2 million light-years (4.9×10^22) and an intracluster medium with a temperature of (6.5×10^7) K. Estimate the mass of the cluster. Give the answer in both kilograms and solar masses. Suppose combined l..
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An electric field of 300 V/m is confined to a circular area d = 11.1 cm in diameter and directed outward perpendicular to the plane of the figure. If the field is increasing at the rate of 22.0 V/m·s, what are direction and magnitude of the magnet..
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A baseball (m = 137 g) approaches a bat horizontally at the speed of 40.6m/s (91 mi/h) and is hit straight back at a speed of 45.1m/s (101 mi/h). If the ball is in contact with the bat for a time of 1.00 ms, what is the average force exerted on the..
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