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1. What are the two types of firewalls?
2. What is a VPN and why is it needed?
3. How do LANs on a fully private internet communicate?
4. Host A and host B use IPSec in the transport mode. Can we say that the two hosts need to create a virtual connection-oriented service between them? Explain.
A point charge of 500π [nC] is located at the origin, an infinite uniform line charge with density of 18π[nC/m] lies along the z axis, and a uniform surface charge density of 2 [nC/m2] lies on all the z = 0 plane.
In a certain communications system a resonant-tuned circuit (tuned at 1200 kHz with Bandwidth = 15 kHz) is connected to the output of a non-linear amplifier (mixer). Find the frequency components at the output of the resonant-tuned circuit
Find the capacitance of a parallel plate capacitor if the area of each plate is 0.075 m2 and the distance between the plates is 1.77 mm.
Evaluate the number of mobile electrons contributed by each Al atom. Assume the current is carried exclusively by electrons which have a mobility
consider the (100),(110), and (111) planes in silicon. (a) which plane has the highest surface density of atoms. what is that density. (b) which plane has the smallest surface density of atoms. what is that density.
How do you calculate the input resistance and output resistance with out feedback. And why are the resistances of the beta network part of the calculation for the input resistance with out feedback
Define and describe open source software and Linux and explain their business benefits.
If the row and columns lie within the rectangle, the memory should return white pixel values; otherwise, it should return black pixel values.
consider a sinusoidal wave with frequency of 300khz as a carrier signal. we want to transmit a sinusoidal signal with
A tidal energy system has an average tidal range of 5 m and a basin area of 21.5km^2. The system is designed to generate power during both incoming and outgoing tides. The seawater density 1025kg/m^3, and the tidal period is about 12.5 hours.
What is the minimum excitation at which the motor can deliver 500 kW at the rated line voltage without losing synchronism?
At the end, the wave totally reflects with a pi phase shift, and the reflected wave now interferes with the incident wave to yield a standing wave pattern over the line length.a) Determine the standing wave pattern for the voltage in the line.
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