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2 years ago

List and briefly describe passive and active security attacks.

Computers and Technology

1 answer:

Rama09 [41]2 years ago

4 0

Answer:

Passive security attack are the unauthorized disclosure in the network attack. In this type of security attack a system are use for monitoring and sometimes scanning the open port. It basically include the monitoring the unprotected data and traffic analysis.

On the other hand, active security system modify the transmitted data and gain the unauthorized access from the computer system.

This type of security attack basically monitor the file transfer and electronic mail from the attacks which can be pass in the form of viruses in the computer system.

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g Write a program to sort an array of 100,000 random elements using quicksort as follows: Sort the arrays using pivot as the mid

shtirl [24]

Answer:

header.h->function bodies and header files.

#include<iostream>

#include<cstdlib>

#include<ctime>

using namespace std;

/* Partitioning the array on the basis of piv value. */

int Partition(int a[], int bot, int top,string opt)

{

int piv, ind=bot, i, swp;

/*Finding the piv value according to string opt*/

if(opt=="Type1 sort" || opt=="Type3 sort")

{

piv=(top+bot)/2;

}

else if(opt=="Type2 sort" || opt=="Type4 sort")

{

piv=(top+bot)/2;

if((a[top]>=a[piv] && a[top]<=a[bot]) || (a[top]>=a[bot] && a[top]<=a[piv]))

piv=top;

else if((a[bot]>=a[piv] && a[bot]<=a[top]) || (a[bot]>=a[top] && a[bot]<=a[piv]))

piv=bot;

}

swp=a[piv];

a[piv]=a[top];

a[top]=swp;

piv=top;

/*Getting ind of the piv.*/

for(i=bot; i < top; i++)

{

if(a[i] < a[piv])

{

swp=a[i];

a[i]=a[ind];

a[ind]=swp;

ind++;

}

swp=a[piv];

a[piv]=a[ind];

a[ind]=swp;

return ind;

}

void QuickSort(int a[], int bot, int top, string opt)

{

int pindex;

if((opt=="Type3 sort" || opt=="Type4 sort") && top-bot<19)

{

/*then insertion sort*/

int swp,ind;

for(int i=bot+1;i<=top;i++){

swp=a[i];

ind=i;

for(int j=i-1;j>=bot;j--){

if(swp<a[j]){

a[j+1]=a[j];

ind=j;

}

else

break;

}

a[ind]=swp;

}

else if(bot < top)

{

/* Partitioning the array*/

pindex =Partition(a, bot, top,opt);

/* Recursively implementing QuickSort.*/

QuickSort(a, bot, pindex-1,opt);

QuickSort(a, pindex+1, top,opt);

}

return ;

}

main.cpp->main driver file

#include "header.h"

int main()

{

int n=100000, i;

/*creating randomized array of 100000 numbers between 0 and 100001*/

int arr[n];

int b[n];

for(i = 0; i < n; i++)

arr[i]=(rand() % 100000) + 1;

clock_t t1,t2;

t1=clock();

QuickSort(arr, 0, n-1,"Type1 sort");

t2=clock();

for( i=0;i<n;i++)

arr[i]=b[i];

cout<<"Quick sort time, with pivot middle element:"<<(t2 - t1)*1000/ ( CLOCKS_PER_SEC );

cout<<"\n";

t1=clock();

QuickSort(arr, 0, n-1,"Type2 sort");

t2=clock();

for( i=0;i<n;i++)

arr[i]=b[i];

cout<<"Quick sort time, with pivot median element:"<<(t2 - t1)*1000/ ( CLOCKS_PER_SEC );

cout<<"\n";

t1=clock();

QuickSort(arr, 0, n-1,"Type3 sort");

t2=clock();

for( i=0;i<n;i++)

arr[i]=b[i];

cout<<"Quick sort time and insertion sort time, with pivot middle element:"<<(t2 - t1)*1000/ ( CLOCKS_PER_SEC );

cout<<"\n";

t1=clock();

QuickSort(arr, 0, n-1,"Type4 sort");

t2=clock();

cout<<"Quick sort time and insertion sort time, with pivot median element:"<<(t2 - t1)*1000/ ( CLOCKS_PER_SEC );

return 0;

}

Explanation:

Change the value of n in the main file for different array size. Output is in the same format as mentioned, time is shown in milliseconds.

7 0

3 years ago

(Java) Write a program that accepts a number of minutes and converts it both to hours and days. For example, 6000 minutes is 100

iogann1982 [59]

Import java.util.Scanner;
public class MinutesConversion {
private static Scanner inputDevice;
public static void main(String[] args) {
int minutes, hours;
float days; // float for decimal point

inputDevice = new Scanner(System.in);
System.out.println("Please enter minutes for conversion >> ");
minutes = inputDevice.nextInt();
hours = minutes / 60;
days = hours / 24.0f;

System.out.println(+ minutes + " minutes is " + hours + " hour(s) or" + days " days");
}
}

6 0

2 years ago

Pig Latin is ______ and fits very naturally in the pipeline paradigm while SQL is instead declarative.

alisha [4.7K]

Answer:

Option b) is correct

Explanation:

Pig Latin is a language game in which English words are altered either by adding a suffix or such kind of suffix can be created by adding a syllable (vocalic). For example, ''hello'' becomes ''ello-hay''.

Pig Latin is procedural and fits very naturally in the pipeline paradigm while SQL is instead declarative.

3 0

2 years ago

The "A" in the CIA triad stands for "authenticity". True False

mihalych1998 [28]

Answer: False, the "A" in the CIA triad stands for availability.

The CIA triad also know as the Confidentiality, integrity and availability triad, is known as a model which is designed in order to implement and enforce policies in regards to information security. This model is also referred as the availability, integrity and confidentiality model i.e AIC triad. This is done in order to avoid confusion with Central Intelligence Agency i.e. CIA.

8 0

3 years ago

Identify a syntax used to create a spinner control using an input element. a. b. c. d.

Lorico [155]

Answer:

Option A:

Explanation:

Spinner control is a graphical control element where user can adjust the value by pressing up or down arrow button. An example is given in the attached image.

In HTML, one of the key attributes we must use to create a spinner control is "step". The attribute "step" is required to specify the interval of the step value when user press the up or down arrow button.

If we set the attribute values as follows:

type = "number"
value = 2
min = 0
max = 10

The setting above will give a spinner control with a range of legal numbers between 0, 2, 4, 6, 8 and 10.

6 0

2 years ago