Explain why the RS232 asynchronous serial interface was probably the worst misfortune to befall early personal computers.
What will be an ideal response?
The misfit between the IBM personal computer and RS232 was rather massive. RS232 was inappropriate and
slow. Its control signals were designed for telecommunications and not general computer control. The data
transmission system was horrible (asynchronous serial data transmission left over from the age of the telegraph).
It was crude and bulky and a relic of a pre?computer age. It had to be set up for each application and hardware to
which it was connected. It was used because it was there and alternatives had not been created. There was no
mass PC market to create a demand. It is not appreciated today that the microprocessor revolution took place
before the development of microprocessor peripherals and interfaces.
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An attack on a server that originates from many sources is known as a:
a. DDoS b. DoS c. Botnet d. Teardrop
Define similarity when a network is concerned. Why is the similarity score important in a real-world network? What can be inferred if the similarity scores of two network nodes are comparable? Can similarity alone transform a random network to a scale-free network? Dis- cuss.
What will be an ideal response?
The ________ function retrieves the current system date and time
A) DatePart B) Date C) DateSerial D) Now
Consider the following class definition.public class Cylinder{ private double baseRadius; private double height; public Cylinder () { baseRadius = 0; height = 0; } public Cylinder (double l, double h) { baseRadius = l; height = h; } public void set(double r, double h) { baseRadius = r; height = h; } public String toString() { return (baseRadius + " " + height); } public double SurfaceArea() { return 2 * 3.14 * baseRadius * height; } public double volume() { return 3.14 * baseRadius * baseRadius * height; }}Suppose that you have the following
declaration. Cylinder cyl = new Cylinder(1.5, 10);Which of the following sets of statements are valid in Java?(i) cyl.surfaceArea(); cyl.volume(); cyl.print();(ii) print(cyl.surfaceArea); print(cyl.volume()); A. Only (i) B. Only (ii) C. Both (i) and (ii) D. None of these