E-commerce in Saudi Arabia has received a boost following the launch of several digital payment platforms in the last few years, a development that should support the growing number of online shoppers and contribute to government efforts to diversify the economy. Saudi Arabia is one of the fastest-growing markets in the Middle East for electronic payments, investments in the e-commerce market are set to rise under the government’s Vision 2030 strategy and National Transformation Programe (NTP), which both aim to improve communications connectivity and data transmission throughout the country as part of the broader diversification drive.
Answer the following questions:
1. What are the different methods of e-payment systems used in e-commerce platforms in Saudi Arabia?
2. Discuss the benefits of the multiple types of e-payment system to the customers?
3. Discuss the benefits of the multiple types of e-payment system to the e-commerce business?
4. What are some factors affecting the e-commerce business when choosing the e-payment gateways?
5. Explain some issues related to the e-payment system in the e-commerce platforms?

Describe hard and symbolic links. What is the difference between them?

5. A test engineer conducted an experiment to estimate time to failure of a system component known to decay with time. Because activation of the component depended on its interaction with other components in the system, she could not control when the component was activated, but she could measure the time of its activation. She tracked the function of that component in 14 randomly chosen prototypes of the system, recording activation time (Ta) for the component, and the time the component decayed to the point of failure (Tf). Results are delineated below (each data point in the recorded data is the time recorded in seconds from when the experiment began)

Chart : Prototype ID 3 8 14 17 21 22 25 32 34 40 46 43 48 49

Ta (sec) 0 12 6 17 32 14 35 22 10 18 29 23 4 15

Tf (sec) 130 115 158 180 250 292 117 217 231 172 123 182 218 200   

Write a MATLAB script that obtain statistics about the time it takes the component to decay to the point of failure. Your script can hardcode the data in Table 2 or ask the user to input the data. Include in your display the number of prototypes tested, a minimum time (the lowest calculated time), a maximum time (the highest calculated time), a standard estimate (the mean of calculated times across all prototypes), and a conservative estimate (the mean of calculated times across prototypes with the highest and lowest values removed). Your display should have the format as follows (with calculated values replacing ): Experimental results --------- Number of prototypes: Minimum time to failure: Maximum time to failure: Mean time to failure (standard): Mean time to failure (conservative):

Which of the following is a denial of service attack?

Group of answer choices

When a cracker enters a system through an idle modem, captures the PC attached to the modem, and then gains access to the network to which it is connected.

Both a perpetrator who sends hundreds of messages from randomly generated false addresses, overloading an Internet service provider's e-mail server AND a perpetrator who e-mails the same message to everyone on one or more LISTSERV lists are denial of service attacks.

When an e-mail message is sent through a re-mailer, who removes the message headers making the message anonymous, then resends the message to selected addresses.

When the perpetrator e-mails the same message to everyone on one or more LISTSERV lists.

When a perpetrator sends hundreds of messages from randomly generated false addresses, overloading an Internet service provider's e-mail server.

Create a SPIM program that asks the user for a character string and a number. Repeatedly display the string on the console for the number of times specified by the user.

Format your assembly program to make it easier to read by including appropriate comments and formatting using appropriate white space. When ending your program call system call code 10.

Example Output:

Please enter a string: I will not repeat myself

Please enter the integer number of times to repeat: 5

I will not repeat myself
I will not repeat myself
I will not repeat myself
I will not repeat myself

In java, write a class that tests the following code. Add screen shots as well.

public class DoubleStack<E> {
   private E[] elements;
   private int top1, top2;
   private static int DEFAULT_SIZE = 10;
  
   public DoubleStack() {
       elements = (E[])new Object[DEFAULT_SIZE];
       top1 = 0;
       top2 = elements.length - 1;
   }
  
   public boolean isFull(int stack) {
       if(top2 == top1 + 1)
           return true;
       else
           return false;
   }
  

   public boolean isEmpty(int stack) {
       if(stack == 1 && top1 == 0)
           return true;
       else if(stack == 2 && top2 == elements.length-1)
           return true;
       else
           return false;
   }
  
   public void push(int stack, E data) {
       if(isFull(stack))
           resize();
       if(stack == 1) {
           elements[top1] = data;
           top1++;
       }
       else if(stack == 2) {
           elements[top2] = data;
           top2--;
       }
   }
  
   public E peek(int stack) {
       if(!isEmpty(stack))
       {
           if(stack == 1)
               return elements[top1-1];
           else if(stack == 2)
               return elements[top2+1];
       }
       return null;

   }
  
   public E pop(int stack) {
       if(!isEmpty(stack))
       {
           if(stack == 1)
               return elements[--top1];
           else if(stack == 2)
               return elements[++top2];
       }
       return null;

   }
  
   public int size(int stack) {
       if(stack == 1)
           return top1;
       else if(stack == 2)
           return elements.length - 1 - top2;
       else
           return 0;
   }
  
   public void resize() {
       E[] temp = (E[])new Object[elements.length * 2];
       for(int i = 0; i < top1; i++){
           temp[i] = elements[i];
       }
      
       int i, j;
       for(i = elements.length - 1, j = temp.length-1; i > top2; i--, j--) {
           temp[j] = elements[i];
       }
      
       elements = temp;
      
       top2 = j;
      
   }
  
  
}

JAVA for DUMMIES (Game Development) You're the lead programmer at a AAA studio making a sequel to the big
hit game, Zeldar 2. You've been challenged to implement player movement in dungeons. The
game is top-down, with dungeons modeled as a 2d grid with walls at the edges. The player's
location is tracked by x,y values correlating to its row and column positions. Given the current
position of the player and a sequence of input commands: w,a,s,d you must determine the new
position of the player. The player must not be able to move outside the walls of the dungeon
(i.e. grid)
Facts
● the player's position is modeled using two integer values (x, y)
● x represents the column position, left-right axis
● top-left corner is (0,0)
● y represents the row position, up-down axis
● “w” move up by decreasing y by 1
● “a” move left by decreasing x by 1
● “s” move down by increasing y by 1
● “d” move right by increasing x by 1
● if an input attempts to move player off grid, then ignore that move.

Input
The first input is the number of test cases. Each test case contains three lines of inputs. The first
line is two positive integers that represent the dungeon's grid size, rows (length) columns
(width). The second line is two non-negative integers representing the player's position in the
dungeon grid, x,y. The third line represents the sequence of player movements "w", "s", "a", "d".

Output
The program should print the final location of the player in the form of <x> <y>, where “x” and
“y” are the coordinates within the dungeon grid.
Sample Input Sample Output
2

4 4 2 2
2 3
s s s w

10 10 8 4
9 4
s d w a

construct a bitmap index for the color column.

Please please show steps or explain what you did as i really want to learn how to do this.

**The course name MIS Ethics**

Write a paragraph for each of the following titles with APA resources style

1-Piracy

2-Cyber crime (copyright, hacking, fraud, identity theft, computer viruses)

Write a JAVA program that asks a user to specify the number of months, investment amount and compound interest rate in % (per annum)

• Your program should then print each month, starting balance, interest earned and ending balance

• Your program is not expected to handle more than 5 months

• The balance and ending balance should be printed rounded to 2 decimal places

• You should utilise String.format() to display each line of the output. This function can be used to evenly space the output and also print doubles to a certain precision

• Text written in red below indicates user input

WANTED OUTCOME

Enter number of months: 5

Enter amount: 10

Enter interest rate (%): 6

Write down what you did to accomplish each task. 1. Inspect /etc/passwd find your account. 2. Inspect /etc/shadow. What is each field displaying? 3. Add a new user to your system. Call the user "user1" with password "user" . 4. How do you inspect your environment variables. 5. Install openssh server 6. Check to see if it is up and running.

using java write a program

As the title described, you should only use two stacks to implement a queue's actions. DO NOT use any other data structure and push, pop and top should be O(1) by AVERAGE.
The queue should support push(element), pop() and top() where pop is pop the first(a.k.a front) element in the queue.
Both pop and top methods should return the value of first element

example

push(1)
pop() // return 1 push(2)
push(3)
top() // return 2 pop() // return 2

***JAVA LANGUAGE, NO CHANGES NEEDED FOR THE Movie CLASS. USE THIS AS A REFERENCE***

public class Movie {
private String title;
private int length;
private static int numMovies = 0;

public Movie() {
this("", 0);
}

public Movie(String title, int length) {
this.title = title;
this.length = length;
++numMovies;
}

public String getTitle() { return this.title; }
public int getLength() { return this.length; }
public static int getNumMovies() { return numMovies; }

public void setTitle(String title) {
this.title = title;
}

public boolean setLength(int length) {
if (length > 0) {
this.length = length;
return true;
}
else {
return false;
}
}
}

***IMPLEMENTATION CLASS BELOW HAS 3 BLOCKS OF CODE NEEDED. LOOK FOR THE COMMENTS LABELED "BLOCK"***

import javax.swing.JOptionPane;
public class TheatreIncomplete {
   public static void main(String[] args) {
      final int NUM_MOVIES = 5;
      Movie[] movies = new Movie[NUM_MOVIES];

      int x = 0;
      do {
      
         /** START: BLOCK #1
          * In the block below, enter code that will first check if there is room to enter another movie in the
          * movies array. If there is, call the add the movie to the array using the inputMovie() method.
          * Else, if there is not, display an error message to the user letting them know the maximum nubmer of movies
          * that can be entered.
          * Hint: To check the number of movies already entered, use the getNumMovies() static method
          */
         
         
         
         /** END: BLOCK #1 **/         

      }
      while (JOptionPane.showConfirmDialog(null, "Enter another movie?") == JOptionPane.YES_OPTION);

      Movie shortestMovie = getShortest(movies);
      printSummary(movies, shortestMovie);
   }

   private static Movie inputMovie() {
      Movie aMovie = new Movie();
      
      aMovie.setTitle(JOptionPane.showInputDialog(null, "Enter the title for movie " + Movie.getNumMovies() + ": "));
      
      int length;
      boolean isLengthSet = false;
      do {
         try {
            length = Integer.parseInt(JOptionPane.showInputDialog("Enter the length of " + aMovie.getTitle() + " in (minutes)"));
         }
         catch (NumberFormatException e) {
            length = -1;
         }
         isLengthSet = aMovie.setLength(length);
         if (!isLengthSet) {
            JOptionPane.showMessageDialog(null, "Sorry, you entered an invalid movie length. Please try again.");
         }
      } while(!isLengthSet);
      
      return aMovie;
   }
   
   private static Movie getShortest(Movie[] movies) {
      Movie aMovie = null;
      
      if (movies.length > 0) {
         
         /** START: BLOCK #2
          * In the block below, enter code that will find the movie object containing the shortest length
          * Hint: You will need to loop through all movies to find the shortest
          */
         
         
         
         /** END: BLOCK #2 **/
      }
      
      return aMovie;
   }
   
   private static void printSummary(Movie[] movies, Movie shortestMovie) {
      String summary="**Movie Summary**\n";
      
      /** START: BLOCK #3
       * First, using the summary variable declared above, loop through all of the movies entered, appending the title of each
       * movie to the summary. Then, append to the summary the number of movies entered, the title of the shortest movie
      * and the length of the shortest movie
       * Hint: To get the number of movies entered, use the getNumMovies() static method
       * Hint: To get the title and length of the shortest movie, use the object reference passed into the method
       */
      
              
      /** END: BLOCK #3 **/
              
      JOptionPane.showMessageDialog(null, summary);
   }
}

If you are not familiar with JOptionPane you can just code with Scanner and I will change it. Thank you.

• What are the basic steps involved with creating a new thread?
• Why is it ok for the OS to disable interrupts, but not application programs?

As you consider computer hardware and software, what hardware element do you think impact software performance the most?