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Feliz [49]
3 years ago
15

Given that a seven-page program (with pages a, b, c, d, e, f, g) requests pages in the following order: a, b, a, c, d, a, e, f,

g, c, b, g a. Using the FIFO page removal algorithm, do a page trace analysis indicating page faults with asterisks (*). Then compute the failure and success ratios. b. Increase the size of memory so it contains four page frames for public use. Using the same page requests as above and FIFO, do another page trace analysis and compute the failure and success ratios.

Computers and Technology
1 answer:
34kurt3 years ago
5 0

The answer & explanation for this question is given in the attachment below.

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Consider an improved version of the Vigen ere cipher, where instead of using multiple shift ciphers, multiple mono-alphabetic su
anzhelika [568]

Answer:

Kasiski’s method for determining 't' works for Vigenère cipher as well. The only difference is therefore in the second stage of the attack. In the second stage, one needs to build a frequency table for each of the 't' keys, and carry out an attack like on the mono-alphabetic cipher. Given a long enough plaintext, this will work successfully.

Explanation:

Kasiski method is a method of attacking polyalphabetic substitution ciphers such as Vigenère cipher. It is also called Kasiski test or Kasiski examination.

The method involve finding the length of the keyword and then dividing the message into that many simple substitution cryptograms. Frequency analysis could then be used to solve the resulting simple substitution.

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Read 2 more answers
Write a program that calculates and displays a person’s body mass index (BMI). The BMI is often used to determine whether a pers
GuDViN [60]

Answer:

<em>This program is written using C++</em>

<em>Comments are used to explain difficult lines</em>

<em>Program starts here</em>

#include<iostream>

using namespace std;

int main()

{

//Declare variables

float BMI, Height,Weight;

// Prompt user for inputs

cout<<"Ener Height (in inches): ";

cin>>Height;

cout<<"Enter Weight (in pounds): ";

cin>>Weight;

//Calculate BMI

BMI = (Weight * 703)/(Height * Height);

cout<<"Your Body Mass Index (BMI) is "<<BMI<<endl;

//Test and print whether user is underweight, overweight or optimal

if(BMI>=18.5&&BMI<=25)

{

 cout<<"You have an optimal weight";

}

else if(BMI<18.5)

{

 cout<<"You are underweight";

}

else if(BMI>25)

{

 cout<<"You are overweight";

}  

return 0;

 

}

<em>See attachment for .cpp source file</em>

Download cpp
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3 years ago
While many myths are harmless, why can myths themselves be dangerous?
blondinia [14]

Answer:b

Explanation:

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